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

Seven-Day Accumulated Precipitation (May 25 - 31)

Precipitation was variable throughout agro-Manitoba over the past seven days.  Many areas received only small amounts of rain.  Isolated rain events brought higher accumulations to the East, parts of the Interlake, and parts of the Southwest regions. Teulon had the highest accumulation over the week ranging with 14/5 mm.

Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions (May 25 - 31, 2026)

Percent Normal Precipitation (PDF 1.6 MB)

Total Accumulated Precipitation (PDF 1.6 MB)

Climate normals for total accumulated precipitation from May 1 to May 31 range from 39.1 mm to 79.7 mm (Table 2) and are based on 30-year historical data. Since May 1, the large portions of the Northwest, Interlake, and Southwest regions have accumulated more than 20 mm of precipitation. The majority of southern agro-Manitoba has accumulated less than 50% of normal precipitation. The Interlake and Northwest regions have accumulated more precipitation with some localized areas accumulating more than 70% of normal precipitation.

Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions. (May 1 - 31, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Wettest Location this Season (mm, % norm.)	Driest Location this Season (mm, % norm.)
Central	61.1→ 78.4	0	Plumas (31.2, 51)	Baldur (14.2, 19)
Eastern	55.1→ 79.7	0	Stead (51.8, 94)	Prawda (12.0, 18)
Interlake	49.4→ 66.9	13	Taylor's Point (59.1,106)	Gimli (26.0, 47)
Northwest	39.1 → 68.3	0	Alonsa (48.7, 81)	Pipe Lake (12.8, 26)
Southwest	46.9 → 68.6	0	Hamiota (52.2, 83)	Glenboro (10.0, 16)

 

Soil Moisture

Soil Moisture 30cm (1.3 MB)

Soil Moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on May 31, 2026 relative to field capacity. Most areas are showing wet or optimal conditions. Localized pockets are showing dry or very dry conditions.

 

Soil Moisture 120 cm (1.3 MB)

Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on May 31, 2026 relative to field capacity. The majority of agricultural regions are showing wet to optimal soil moisture conditions at the 0-120 cm depths.

  

Growing Degree Days

Total Accumulated Growing Degree Days (PDF 1.6MB)

Total Accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 – May 31, 2026. GDD accumulations ranged between 160 and 253 GDD so far this growing season. Warmer than normal temperatures this past week contributed to a significant in GDD.

 

Percent Normal Accumulated Growing Degree Days  (PDF 1.7 KB)

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 – 31, 2026. GDD Accumulations are above normal for the majority of agro-Manitoba. Parts of the Southwest region have accumulated more than 130% of normal GDD.

 

Table 3. Summary of total accumulated growing degree days (GDD) and percent deviation from normal in Manitoba's Agricultural Regions (May 1- 31, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest GDD accumulation this season (GDD, % norm.)	Lowest GDD accumulation this season (GDD, % norm.)
Central	181 → 221	100	Winkler (240, 112)	Lakeland (197, 104)
Eastern	178 → 215	74	St. Pierre (217, 102)	Sprague Lake (161, 87)
Interlake	162 → 207	93	Selkirk (208, 104)	Riverton (171, 103)
Northwest	130 → 182	91	Swan River (198, 120)	The Pas (160, 123)
Southwest	124 → 210	100	Dand (253, 124)	Wasagaming (166, 134)

Corn Heat Units

Total Accumulated Corn Heat Units (PDF 1.6 KB)

Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to from May 1 – 31.  There was a substantial increase in CHU accumulations due to recent above normal temperatures.  More than 340 CHU have accumulated in much of the Southwest, Central, and Eastern regions since May 1.

 

Percent Normal Accumulated Corn Heat Units (PDF 1.6 KB)

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 – 31. Above average CHU accumulations were observed throughout the province.  The Northwest and Southwest regions saw accumulations above 125% 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 - 31, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest CHU accumulation this season (CHU, % norm.)	Lowest CHU accumulation this season (CHU, % norm.)
Central	287 → 354	100	Cypress River (400, 123)	Lakeland (330, 110)
Eastern	282 → 346	100	St. Pierre (370, 109)	Sprague Lake (297, 100)
Interlake	256 → 329	100	Selkirk (348, 110)	Riverton (291, 111)
Northwest	204 → 287	100	Swan River (338, 130)	The Pas (266, 131)
Southwest	192 → 337	100	Waskada (249, 127)	Wasagaming (312, 163)

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