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.
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 4-10)
Little to no precipitation accumulated throughout the majority of agro-Manitoba over the past week. The Eastern region had the highest accumulations over the past seven days ranging from 0 to 3.2 mm. The highest amount of rainfall was observed at Sprague Lake at 3.2 mm.
Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions.
Region |
Wettest location last week |
Driest location last week |
Central |
Manitou (1.9 mm) |
Several (0 mm) |
Eastern |
Sprague Lake (3.2 mm) |
Several (0 mm) |
Interlake |
Gimli (1.7 mm) |
Several (0 mm) |
Northwest |
Pipe Lake (1.3 mm) |
Several (0 mm) |
Southwest |
Wasagaming (2.8 mm) |
Several (0 mm) |
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 10 range from 12.3 mm to 21.2 mm (Table 2) and are based on 30-year historical data. Since May 1, less than 10 mm of precipitation has accumulated throughout the province. The majority of the agro-Manitoba has accumulated less than normal precipitation.
Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions.
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Wettest Location this Season (mm, % norm.) |
Driest Location this Season (mm, % norm.) |
Central |
14.3 →21.2 |
0 |
Manitou (2.4, 11) |
Several (0, 0) |
Eastern |
12.5 → 20.1 |
0 |
Menisino(5.5, 30) |
Beausejour (0.5, 4) |
Interlake |
13.3 → 18.1 |
0 |
Gimli (2.9, 22) |
Several (0, 0) |
Northwest |
12.6 → 18.1 |
0 |
Pipe Lake (1.3, 9) |
Several (0, 0) |
Southwest |
12.3 → 20.0 |
0 |
Wasagaming (2.8, 17) |
Several (0, 0) |
Soil Moisture
Soil moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on May 10, 2026 relative to field capacity. Soil moisture is variable across agro-Manitoba with most areas showing optimal to wet conditions.
Soil moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on May 10, 2026 relative to field capacity. The majority of agricultural regions are showing optimal to wet soil moisture conditions at the 0-120 cm depth. Localized areas of the Northwest and Interlake are showing very wet conditions.
Growing Degree Days
Total Accumulated Growing Degree Days (PDF 1.6MB)
Total Accumulated Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 - May 10, 2026. GDD accumulations ranged between 3 and 28 GDD so far this growing season. Recent cool temperatures slowed accumulations of 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 - 10, 2026. GDD Accumulations are below 75% of normal for all of agro-Manitoba.
Table 3. Summary of total accumulated growing degree days (GDD) and percent deviation from normal in Manitoba's Agricultural Regions (May 1-10, 2026)
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Highest GDD accumulation this season (GDD, % norm.) |
Lowest GDD accumulation this season (GDD, % norm.) |
Central |
40 → 51 |
0 |
Winkler (24, 48) |
Lakeland (12, 28) |
Eastern |
40 → 50 |
0 |
Kleefeld (14, 30) |
Sprague Lake (5, 11) |
Interlake |
34 → 47 |
0 |
Stonewall (13, 27) |
Riverton (9, 23) |
Northwest |
25 → 42 |
0 |
( (20, 48) |
The Pas (3, 13) |
Southwest |
25 → 49 |
0 |
Kola (28, 61) |
Wasagaming (8, 32) |
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 - 10, 2026. More than 45 CHU have accumulated in much of the Central, Northwest , and Southwest 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 - 10, 2026. Below normal CHU accumulations were observed in the Interlake, East, and Central regions, while accumulations were near normal for much of the Southwest.
Table 4. Summary of total accumulated corn heat units (CHU) and percent deviation from normal in Manitoba's Agricultural Regions (May 1-10, 2026)
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Highest CHU accumulation this season (CHU, % norm.) |
Lowest CHU accumulation this season (CHU, % norm.) |
Central |
14 → 19 |
100 |
Holland (38, 232) |
Lakeland (26, 179) |
Eastern |
14 → 18 |
100 |
St. Adolphe (33, 191) |
Sprague (25, 179) |
Interlake |
11 → 17 |
100 |
Woodlands (32, 224) |
Riverton (21, 169) |
Northwest |
10 → 16 |
95 |
McCreary (35, 213) |
The Pas (9, 93) |
Southwest |
8 → 18 |
100 |
Waskada (42, 231) |
Wasagaming (31, 385) |
First Fall Frost
Visit the Seasonal Reports page for information on progress in seeding and crop establishment, crop development, pest activity including weeds, insects and disease, harvest progress, crop yields and grades, fall field work progress, and status of winter cereal crop seeding and establishment. Information on haying progress and estimated yields, as well as pasture conditions is included.
