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 (August 3-9, 2026) (PDF 1.5 MB)

Scattered rain events brought rain throughout the province.  The Southwest, Northwest, Central and the Interlake regions received less than 10 mm of precipitation with many areas receiving lest than 5 mm.  The largest accumulations occurred in the East region with Prawda having the highest accumulation at 38.3 mm.

Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions (August 3-9, 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 9 range from 191 mm to 289 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. Seasonal accumulations are above normal for the entire Northwest and large areas of the Southwest and Interlake.  Areas of the Central and Southwest region have near-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 9, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Wettest Location this Season (mm, % norm.)	Driest Location this Season (mm, % norm.)
Central	210.7 → 280.6	44	Clearwater (277, 109)	Treherne (170, 67)
Eastern	218.8 → 288.7	14	Pinawa (290, 113)	Menisino (161, 56)
Interlake	191.2 → 265.4	59	Stonewall (476, 179)	Fisher Branch (148, 67)
Northwest	208.2 → 263.4	88	San Clara (502, 209)	The Pas (177, 84)
Southwest	193.9 → 256.4	61	Minnedosa (339,143)	Sinclair (147, 69)

 

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 9, 2026 relative to field capacity. Due to lower rainfall and increased crop demands, areas of the East, Central, and Interlake parts of agro-Manitoba dry or very dry conditions.  The Southwest and Northwest regions are showing soil conditions at the surface depths ranging from very dry to wet.

 

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 9, 2026 relative to field capacity. The majority of agricultural regions are showing are optimal or wet 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 9, 2026. GDD accumulations ranged between 968 and 1339 GDD so far this growing season. Most of Southern Manitoba has accumulated more than 1500 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 9, 2026. Although temperatures were cooler recently, 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 9, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest GDD accumulation this season (GDD, % norm.)	Lowest GDD accumulation this season (GDD, % norm.)
Central	1033→ 1188	100	Winkler (1339, 114)	Somerset (1156, 110)
Eastern	1062 → 1172	90	Steinbach (1263, 113)	Sprague Lake (1062, 98)
Interlake	1022 → 1171	100	Selkirk (1232, 108)	Fisherton (1115, 109)
Northwest	897 → 1099	100	Ste. Rose (1182, 111)	Ruthenia (1005, 105)
Southwest	852 → 1148	100	Dand (1241, 111)	Wasagaming (968, 114)

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 9.  More than 1850 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 9. 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 9, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest CHU accumulation this season (CHU, % norm.)	Lowest CHU accumulation this season (CHU, % norm.)
Central	1682→ 1914	100	Winkler (2104, 112)	Lakeland (1900, 105)
Eastern	1721 → 1889	100	Steinbach (2035, 114)	Sprague Lake (1732,99)
Interlake	1648 → 1876	100	Stonewall (2006, 107)	Fisher Branch (1813, 109)
Northwest	1466 → 1795	100	Ste. Rose (1937, 113)	Ruthenia (1681, 108)
Southwest	1385→ 1834	100	Dand (2021, 112)	Wasagaming (1637, 118)

P-Days

Total Accumulated P-Days  (June 1- August 9, 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 530 P-Days so far this season.

Percent of Normal Accumulated P-Days (June 1 - August 9, 2026) represents the variation of accumulated physiological days for potatoes (P-Days) from the historical record over a 30-year period. With the exception of the East, most of agro-Manitoba P-Day accumulations are over 100% of normal so far this season.

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