Weather Conditions and Reports

Manitoba's ag weather program measures and records data year round from over 100 weather stations across agro-Manitoba. The stations monitor air temperature, relative humidity, barometric pressure, precipitation, wind speed and direction, solar radiation, soil temperature, and soil moisture. The latest weather conditions from each station are made available every 15 minutes throughout the growing season and every hour during the winter months. 

• Current Weather Conditions - Interactive Map
• Current Conditions by Station
• Current Conditions Summary - Central, Eastern & Interlake
• Current Conditions Summary - Northwest & Southwest
• Hourly Summary
• Daily Summary
• Seasonal Summary
• Current Soil Temperature

 

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The latest weather report and maps are made available every Monday year round. Subscribe to receive a weekly distribution of seasonal reports and maps by email.

Higher resolution maps are available upon request.

 

Precipitation

Eight-Day Accumulated Precipitation (July 27 - August 3) (PDF 1.5 MB)

Variable precipitation occurred over the past 8 days across agro-Manitoba. Isolated thunderstorms brought rain to parts of the Southwest, Central, and Eastern regions. The largest accumulations occurred at Saint Labre (35.748.1 mm) and Dand (35.7 mm).  The Interlake received little to no precipitation.

Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions (July 27 - August 3, 2026)

Percent Normal Precipitation (PDF 1.5 MB)

Total Accumulated Precipitation (PDF 2.0 MB)

Climate normals for total accumulated precipitation from May 1 to August 3 range from 181 mm to 273 mm (Table 2) and are based on 30-year historical data. Since May 1, areas of the Northwest and Interlake regions have accumulated 300 mm of precipitation. Frequent precipitation events have brought seasonal accumulations above normal for the entire Northwest and large areas of the Interlake. Areas of the Central and Southwest region also have above-normal accumulation. A few localized stations in the Southwest, Central and Eastern region also have above-normal accumulation.  A few localized areas of the Southwest, Central, and Eastern regions have seen accumulations below 80% of the 30-year average.

Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions. (May 1 to August 3, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Wettest Location this Season (mm, % norm.)	Driest Location this Season (mm, % norm.)
Central	202.4 → 263.6	50	Clearwater (277, 114)	Treherne (170, 70)
Eastern	207.3 → 273.0	32	Pinawa (283, 116)	Minisino (159, 58)
Interlake	181.1 → 249.0	59	Stonewall (472, 190)	Fisher Branch (148, 71)
Northwest	195.4 → 245.1	92	San Clara (502, 223)	The Pas (166, 83)
Southwest	184.8 → 248.4	66	Minnedosa (339,150)	Sinclair (144, 71)

 

Soil Moisture

Soil Moisture 30cm (1.5 MB)

Soil Moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on August 3, 2026 relative to field capacity. Most areas of the western parts of agro-Manitoba are showing wet or optimal conditions. Areas Large portions of the Central, Interlake and Eastern regions are showing dry or very dry conditions.

 

Soil Moisture 120 cm (1.5 MB)

Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on August 3, 2026 relative to field capacity. The majority of agricultural regions are showing wet or optimal conditions at the 0-120 cm depths.

  

Growing Degree Days

Total Accumulated Growing Degree Days (PDF 2.0 MB)

Total Accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 – August 3, 2026. GDD accumulations ranged between 915 and 1260 GDD so far this growing season. Most of Southern Manitoba has accumulated more than 1100 GDD.

 

Percent Normal Accumulated Growing Degree Days  (PDF 2.0 MB)

Percent Normal Accumulated Growing Degree Days represents the variation of accumulated Growing Degree Days (GDD) from the historical record over a 30-year period from May 1 – August 3, 2026. Due to recent above normal temperatures the majority of agro-Manitoba has accumulated more than 105% of the normal accumultions for this time of year.

 

Table 3. Summary of total accumulated growing degree days (GDD) and percent deviation from normal in Manitoba's Agricultural Regions (May 1- August 3, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest GDD accumulation this season (GDD, % norm.)	Lowest GDD accumulation this season (GDD, % norm.)
Central	955 → 1100	100	Winkler (1160, 116)	Somerset (1091, 112)
Eastern	980 → 1086	95	Steinbach (1186, 115)	Sprague Lake (995, 100)
Interlake	942 → 1083	100	Selkirk (1158, 109)	Fisherton (1047, 111)
Northwest	827 → 1015	100	Ste. Rose (1112, 113)	Ruthenia (962, 108)
Southwest	784 → 1062	100	Dand (1175, 113)	Wasagaming (915, 117)

Corn Heat Units

Total Accumulated Corn Heat Units (PDF 2.0 MB)

Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to from May 1 – August 3.  More than 1750 CHU have accumulated in much of the Southwest, Central, and Eastern regions since May 1.

 

Percent Normal Accumulated Corn Heat Units (PDF 2.0 MB)

Percent Normal Accumulated Corn Heat Units represents the variation of accumulated Corn Heat Units (CHU) from the historical record over a 30-year period for the period of May 1 – August 3. Above average CHU accumulations were observed throughout the province.  The Northwest, Southwest, Central and Interlake regions saw accumulations above 110% of the 30-year normals.

 

Table 4. Summary of total accumulated corn heat units (CHU) and percent deviation from normal in Manitoba's Agricultural Regions (May 1 - August 3, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest CHU accumulation this season (CHU, % norm.)	Lowest CHU accumulation this season (CHU, % norm.)
Central	1556→ 1773	100	Winkler (1976, 113)	Lakeland (1783, 107)
Eastern	1589 → 1752	100	Steinbach (1907, 115)	Sprague Lake (1620,100)
Interlake	1519 → 1736	100	Stonewall (1881, 108)	Fisher Branch (1694, 110)
Northwest	1351 → 1655	100	Ste. Rose (1817, 114)	Ruthenia (1608, 110)
Southwest	1273→ 1699	100	Dand (1911, 114)	Wasagaming (1546, 121)

P-Days

Total Accumulated P-Days  (June 1- August 3, 2026) represents the total accumulated physiological days for potatoes (P-days) since June 1.  As P-Day accumulation begins at about 50% potato emergence, accumulation begins on June 1.  Most of the Central and Southwest regions of agro-Manitoba have accumulated more than 495 P-Days so far this season.

Percent of Normal Accumulated P-Days (June 1 - August 3, 2026) represents the variation of accumulated physiological days for potatoes (P-Days) from the historical record over a 30-year period. Most of agro-Manitoba PDay accumulations are over 100% of normal so far this season.

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