Ontario Canada Weather Data, Plant Disease Risk and Degree-Day Models APRSWXNET Network - other tables for ON include: All Networks, METAR, see our homepage.

Interactive degree-day maps Degree-day & Phenology Model Calculator  Also try the full-featured calculator/DD model Select model:  Degree-Day Calculator enter your own thresholds T-Sum 200 forage management - N fertilization asian citrus psyllid [citrus] IPPC synth. asian longhorned beetle [trees] IPPC synth. apple maggot 1st emerg [cherry, apple] Jones 1989 apple maggot % emerg [cherry, apple] Jones 1989 apple scab infec seas [apple] Gadoury et al. 1995 alfalfa weevil [alfalfa] U WY,Harcourt 1981 barley P. Miller, MSU bertha armyworm [vegetables] Bailey 1976 bronze birch borer (birch] OSU IPPC 2019 black cutworm [vegetables] Luckmann et al. 1976 brown marmorated stink bug [multiple] broccoli [Arcadia] CROPTIME model broccoli [Emerald Pride] CROPTIME model broccoli [Green Magic] CROPTIME model broccoli [Imperial] CROPTIME model cabbage looper [vegetables] Toba etal 1973 corn earworm [sweet corn] Hartstack et al. 1976 western cherry fruit fly [cherry-E. of Cascades] Jones et al. western cherry fruit fly [cherry-W. of Cascades] AliNiazee honeydew moth [citrus, many hosts] chick pea (Desi not Kabuli) P. Miller, MSU codling moth [apple & pear] Brunner & Hoyt 1987 codling moth revised 06 [apple & pear] Knight 2007 codling moth no biofix WSU Jones et al. 2008 cereal leaf beetle [grasses and grains] Fulton et al. 1975 cabbage Maggot - Dreves 2005 newsletter (pdf) cucumber-Marketmore direct seeded CROPTIME model cucumber-Marketmore transplanted CROPTIME model cucumber-Cobra direct seeded CROPTIME model cucumber-Dasher II direct seeded CROPTIME model cucumber-Extreme direct seeded CROPTIME model cucumber-Supremo direct seeded CROPTIME model cucumber-Zapata direct seeded CROPTIME model canola (Argentine) P. Miller, MSU canola (Polish) P. Miller, MSU canary P. Miller, MSU downy brome Dan Ball Diorhabda carinulata [weed biocontrol] Douglas-fir needle midge [fir trees] emerald ash borer [ash] McCullough and Siegert (2006) early blight of potato eur. pine shoot moth [nursery crops] Regan 1990 european grapevine moth [grapes] UC Napa Extension (2010) Fenders blue butterfly [Fenders Lupine] cougarblight (fire blight) [apple & pear] Smith 1998 filbertworm [hazelnut] Aliniazee (1983) false codling moth [citrus, many hosts] flax P. Miller, MSU fruittree leafroller [tree fruits, ornamentals] Judd et al. Galerucella calmariensis [weed biocontrol] gypsy moth egg hatch Russo et al. (1993) gypsy moth larvae and pupae Carter et al. (1992) gypsy moth full model simplified from Sheehan hairy nightshade (CROPTIME weed model) hop downy mildew season initiation (Gent et al. 2010) isomate-c+ Pacific Biocontrol Corporation Data Japanese knotweed psyllid [weed biocontrol] OSU analysis Japanese beetle [mult. crops] APHIS data Japanese pine sawyer beetle [pine trees] OSU analysis Japanese flower thrips [vegetables] light brown apple moth [tree fruits, grapes] lambsquarter [CROPTIME weed model] Lacanobia fruitworm [apple & pear] Brunner 2003 lentil (intermediate) P. Miller, MSU Lygus bug [alfalfa seed] Ben Simko 2000 Metaseiulus occidentalis Tanagoshi et al. 1975 mint flea beetle Berry et al. mint root borer Berry et al. mustard J (Brown and Oriental) P. Miller, MSU mustard (Yellow) P. Miller, MSU mummyberry inf. season [blueberry] Pscheidt 2014 Neoseiulus fallacis Dover et al. 1979 oak ambrosia beetle [oak trees] oat P. Miller, MSU obliquebanded leafroller [tree fruit] Brunner 1997 obliquebanded leafroller [hazelnut] Gang.; Ali. 1985 orange tortrix (cold winter) [small fruit] Knight 1988 orange tortrix (mild winter) [small fruit] Knight 1988 oriental fruit moth [stone fruit] CA IPM: Rice et al. omnivorous leaftier [many] Helicoverpa armigera (old world bollworm) Pandemis leafroller [tree fruits] Brunner (1991) Pea (yellow-determinate or indeterm) P. Miller MSU pine shoot beetle [pine trees] Peach twig borer [stone fruits] 2007 USU Extension pear scab infec seas [pear] OSU Hd Rvr/Bob Spotts pecan nut casebearer [pecan] 1988 NMSU pink bollworm [cotton] UC Davis IPM pepper - Bell King transplant CROPTIME model pepper - Gatherers gold transplant CROPTIME model pepper - King Arthur transplant CROPTIME model pepper - Stocky red roaster transplant CROPTIME model potato psyllid [potato, tomato] pine tree lappet moth [pine trees] redroot pigweed CROPTIME weed model Safflower (Saffire) P. Miller, MSU San Jose Scale [tree fruits] Rice et al. (1982) small broomrape (red clover) J. Colquhoun Spodoptera litura [omnivorous] spotted wing Drosophila [fruits] spotted wing Drosophila overwintering mortality [fruits] sweet corn [Jubilee] Coop et al. (1993) sweet corn [Luscious DS] Andrews et al. (2019) sweet corn [Luscious TP] Andrews et al. (2019) sweet corn [Sugar Pearl,Temptation DS] Andrews et al. (2019) sweet corn [Sugar Pearl,Temptation TP] Andrews et al. (2019) sweet corn [4001 DS] Andrews et al. (2019) sweet corn [Kokanee DS] Andrews et al. (2019) Sunflower (depends on maturity class) P. Miller MSU sunflower stem weevil [sunflower] Merrill et al. 2010 sugarbeet root maggot Bechinski et al. 1990 strawberry root weevil [mint] Cacka 1982 strawberry rt weev [strawberry] Umble Fisher 2002 small tomato borer [Solanaceae] tomato leafminer [Solanaceae] tomato [Big Beef] tomato [Indigo Rose] tomato [Monica] tomato [New Girl] threecornered alfalfa hopper [legumes, grapes] variegated cutworm [mint] Coop & Berry 1987 walnut husk fly [walnut] Kasana & AliNiazee 1997 western bean cutworm [corn and beans] Neb. western flower thrips [vegetables] Wheat (Bauer model) [spring wheat] Wheat (Hard Red) P. Miller, MSU winter wheat Karow et al. 1993 Thresholds: lower: °F   upper: °F (or celsius °C:)   Calc. method: simple average growing dds single triangle double triangle single sine double sine heating dds cooling dds potato p-days Start (biofix) date:  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31  End date:  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31   same year following year  Forecast type:  after 7day use 10 year averages (default) after 7day use 30 year averages after 7day use last years data after 7day use data from 2 years ago after 7day use NMME seasonal forecast after 7day use CFSv2 seasonal forecast   Statewide Disease Alert Maps: tomato-potato Smith late blight, Tomcast DSV, fire blight, soybean rust Disease Alert Movies: fireblight: 2010 2011 2012 2013 Data table - to SORT click on headers:

#	Location linked to hourly weather, plant disease models and forecasts using "Mypest Page"	County	Re- cent data QA	Fore- cast based virt data	Nearby station based virt data	Station code, links to NWS recent weather	Links to NWS fore- casts	Net- work Elev. (ft)	Lat./ Long. (Dec. Deg.)	Max-min temperature data and degree-days (click radio button to calc.)													10 yr avgs	30 yr avgs	nmme fcast	cfs fcast
1	Aurora VE3CGR6		65	na na	na na	AU023 map	digital	CWOP/APRSWX 900	43.99500 -79.46333	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
2	Brampton VE3FWM		67	na na	na na	AV116 map	digital	CWOP/APRSWX 643	43.71417 -79.69806	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
3	Cherry Valley VA3JLF1	Ontario	67	na na	na na	AT413 map	digital	CWOP/APRSWX 131	43.93389 -77.16000	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	nmme	-
4	Devlin DW4685	Koochiching	84	na na	na na	D4685 map	digital	CWOP/APRSWX 1152	48.62056 -93.60694	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	nmme	-
5	Komoka DW3930	Ontario	82	na na	na na	D3930 map	digital	CWOP/APRSWX 801	42.95417 -81.43472	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
6	Ottawa DW6828		4	na na	na na	D6828 map	digital	CWOP/APRSWX 226	45.46917 -75.53278	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
7	Kanata DW7146		79	na na	na na	D7146 map	digital	CWOP/APRSWX 394	45.30611 -75.88806	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
8	Oshawa DW7240		70	na na	na na	D7240 map	digital	CWOP/APRSWX 358	43.89667 -78.87389	2024	2023	2022	2021	2020	2019	2018	2017						-	-	nmme	-
9	Toronto DW9501		71	na na	na na	D9501 map	digital	CWOP/APRSWX 604	43.74083 -79.43306	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
10	Harrow DW9657	Wayne County	72	na na	na na	D9657 map	digital	CWOP/APRSWX 623	42.04861 -82.99028	2024	2023	2022	2021	2020	2019								-	-	nmme	-
11	Hamilton DW9809		73	na na	na na	D9809 map	digital	CWOP/APRSWX 305	43.25278 -79.92250	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
12	Elgin DW0331	Ontario	82	na na	na na	D0331 map	digital	CWOP/APRSWX 367	44.50861 -76.24333	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
13	Plympton EW1160		81	na na	na na	E1160 map	digital	CWOP/APRSWX 599	43.06611 -82.15000	2024	2023	2022	2021	2020	2019	2018	2017						-	-	nmme	-
14	Campbellford EW1385		81	na na	na na	E1385 map	digital	CWOP/APRSWX 515	44.30778 -77.79028	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
15	Beamsville EW2219		62	na na	na na	E2219 map	digital	CWOP/APRSWX 597	43.10250 -79.42000	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
16	Stittsville EW2262		80	na na	na na	E2262 map	digital	CWOP/APRSWX 387	45.25833 -75.92806	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
17	Orleans EW2286		83	na na	na na	E2286 map	digital	CWOP/APRSWX 312	45.45861 -75.48194	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
18	Owen Sound EW2417		93	na na	na na	E2417 map	digital	CWOP/APRSWX 180	44.58556 -80.83472	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
19	New Tecumseth EW2419		72	na na	na na	E2419 map	digital	CWOP/APRSWX 754	44.15722 -79.89861	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
20	Roseneath EW2420		65	na na	na na	E2420 map	digital	CWOP/APRSWX 361	44.15111 -78.02361	2024	2023	2022	2021	2020	2019	2018	2017						-	-	nmme	-
21	Acton EW2592		68	na na	na na	E2592 map	digital	CWOP/APRSWX 1260	43.64139 -80.07500	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015				-	-	-	-
22	Kingsville EW2832		76	na na	na na	E2832 map	digital	CWOP/APRSWX 614	42.03194 -82.70028	2024	2023	2022	2021	2020	2019	2018	2017						-	-	nmme	-
23	Perth EW3076		75	na na	na na	E3076 map	digital	CWOP/APRSWX 476	44.92056 -76.28500	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
24	Barrie EW3552		61	na na	na na	E3552 map	digital	CWOP/APRSWX 1033	44.34111 -79.72778	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
25	Hamilton EW3591		70	na na	na na	E3591 map	digital	CWOP/APRSWX 715	43.21361 -79.89139	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
26	Ottawa EW3670		92	na na	na na	E3670 map	digital	CWOP/APRSWX 256	45.40417 -75.68944	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015				-	-	-	-
27	Toronto EW4242		64	na na	na na	E4242 map	digital	CWOP/APRSWX 499	43.75778 -79.37194	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
28	Ridgeway EW5040	Erie County	73	na na	na na	E5040 map	digital	CWOP/APRSWX 594	42.89444 -79.01944	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
29	Cambridge EW5149		58	na na	na na	E5149 map	digital	CWOP/APRSWX 948	43.35139 -80.30056	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
30	Owen Sound EW5425		85	na na	na na	E5425 map	digital	CWOP/APRSWX 581	44.55111 -80.93583	2024	2023	2022	2021	2020	2019	2018	2017						-	-	nmme	-
31	Gorrie EW5466		81	na na	na na	E5466 map	digital	CWOP/APRSWX 1181	43.84111 -81.07611	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
32	Westport EW5998		83	na na	na na	E5998 map	digital	CWOP/APRSWX 433	44.67167 -76.36306	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
33	Sudbury EW6694		90	na na	na na	E6694 map	digital	CWOP/APRSWX 777	46.43194 -80.92889	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
34	South Bay EW6772		23	na na	na na	E6772 map	digital	CWOP/APRSWX 675	45.66472 -81.98250	2024	2023	2022	2021	2020	2019								-	-	nmme	-
35	Ottawa EW6946		80	na na	na na	E6946 map	digital	CWOP/APRSWX 312	45.28806 -75.75389	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
36	London EW7603		86	na na	na na	E7603 map	digital	CWOP/APRSWX 813	43.02917 -81.22222	2024	2023	2022	2021	2020	2019								-	-	-	-
37	Fergus DW0452	Ontario	67	na na	na na	D0452 map	digital	CWOP/APRSWX 1385	43.71500 -80.37583	2024	2023	2022	2021	2020	2019	2018	2017			2014	2013		-	-	-	-
38	Fort Erie DW2224	Erie	83	na na	na na	D2224 map	digital	CWOP/APRSWX 620	42.88056 -78.98667	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	nmme	-
39	Ft Frances CW1890	Koochiching	61	na na	na na	C1890 map	digital	CWOP/APRSWX 1112	48.61222 -93.41417	2024	2023	2022	2021	2020	2019	2018	2017	2016					AVG	AVG	nmme	-
40	FW0018 Huntsville		82	na na	na na	F0018 map	digital	CWOP/APRSWX 1161	45.43417 -79.22972	2024	2023	2022	2021	2020	2019								-	-	-	-
41	FW0114 Metcalfe		78	na na	na na	F0114 map	digital	CWOP/APRSWX 278	45.23417 -75.45917	2024	2023	2022	2021	2020	2019								-	-	-	-
42	FW2530 Middlesex Centr		89	na na	na na	F2530 map	digital	CWOP/APRSWX 915	42.99000 -81.42917	2024	2023	2022	2021	2020	2019	2018							-	-	-	-
43	FW3309 Owen Sound		87	na na	na na	F3309 map	digital	CWOP/APRSWX 584	44.61861 -80.90444	2024	2023	2022	2021	2020	2019								-	-	nmme	-
44	FW3871 Woodbridge		73	na na	na na	F3871 map	digital	CWOP/APRSWX 735	43.83667 -79.57722	2024	2023	2022	2021	2020	2019								-	-	-	-
45	FW4609 Hamilton		65	na na	na na	F4609 map	digital	CWOP/APRSWX 688	43.22139 -79.86944	2024	2023	2022	2021	2020	2019								-	-	-	-
46	FW4738 Morewood		81	na na	na na	F4738 map	digital	CWOP/APRSWX 252	45.17472 -75.28000	2024	2023	2022	2021	2020	2019								-	-	-	-
47	FW5184 Aikensville		67	na na	na na	F5184 map	digital	CWOP/APRSWX 1086	43.45389 -80.21944	2024	2023	2022	2021	2020	2019								-	-	-	-
48	Grimsby CW0156	Ontario	73	na na	na na	C0156 map	digital	CWOP/APRSWX 276	43.20417 -79.57333	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	nmme	-
49	Innisfil VE3FWM1		70	na na	na na	AV321 map	digital	CWOP/APRSWX 718	44.39833 -79.53361	2024	2023	2022	2021	2020	2019								-	-	-	-
50	London VE3TEJ	Ontario	78	na na	na na	AS442 map	digital	CWOP/APRSWX 889	42.93639 -81.24028	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
51	London VE3ZEB1	Ontario	74	na na	na na	AT872 map	digital	CWOP/APRSWX 820	42.96611 -81.24778	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
52	Millbrook DW5727	Ontario	64	na na	na na	D5727 map	digital	CWOP/APRSWX 801	44.15056 -78.44556	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
53	Mississauga VE3GOP		83	na na	na na	AS441 map	digital	CWOP/APRSWX 633	43.56194 -79.76528	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
54	Read VE3GSI	Ontario	75	na na	na na	AP316 map	digital	CWOP/APRSWX 476	44.34611 -77.21361	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
55	Stouffville DW6304	Ontario	73	na na	na na	D6304 map	digital	CWOP/APRSWX 955	43.97861 -79.23667	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
56	Unionville CW8618	Ontario	9	na na	na na	C8618 map	digital	CWOP/APRSWX 590	43.87528 -79.31278	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
57	VA3NNW13 Waterloo		47	na na	na na	AU278 map	digital	CWOP/APRSWX 1017	43.45111 -80.56611	2024	2023	2022	2021	2020	2019	2018	2017						-	-	-	-
58	Kincardine VE3COE	Ontario	84	na na	na na	AR279 map	digital	CWOP/APRSWX 650	44.18861 -81.63667	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015		2013		-	-	nmme	-
59	Kitchner VE3KSR	Ontario	52	na na	na na	AP321 map	digital	CWOP/APRSWX 1248	43.40417 -80.63333	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
60	Walkerton DW5903	Ontario	85	na na	na na	D5903 map	digital	CWOP/APRSWX 906	44.10000 -81.10000	2024	2023	2022	2021	2020	2019	2018	2017		2015	2014	2013		-	-	-	-
61	Westport DW0340	Ontario	66	na na	na na	D0340 map	digital	CWOP/APRSWX 479	44.59278 -76.40778	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	-	-
62	Whitby CW1837	Ontario	77	na na	na na	C1837 map	digital	CWOP/APRSWX 361	43.90778 -78.92861	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		-	-	nmme	-
63	Wolfe Island DW4596	Jefferson	57	na na	na na	D4596 map	digital	CWOP/APRSWX 267	44.22194 -76.19222	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015	2014	2013		AVG	AVG	nmme	-

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