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.
Agro-Manitoba Weather Extremes
- Agro-Manitoba Weather Extremes of 2022 (PDF 1 MB)
- Agro-Manitoba Weather Extremes of 2021 (PDF 1 MB)
- Agro-Manitoba Weather Extremes of 2020 (PDF 1 MB)
Weekly Crop Weather Report and Maps
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.
- Crop Weather Report (PDF 58 KB)
- Archived Crop Weather Reports
Higher resolution maps are available upon request.
Precipitation
Seven-Day Accumulated Precipitation (PDF 1,494 KB)
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 |
Elie (37.9 mm) |
Several (0.0 mm) |
Eastern |
Prawda (30.2 mm) |
Menisino, Dominion City (0.0 mm) |
Interlake |
Fisherton (61.4 mm) |
Clarkleigh (1.1 mm) |
Northwest |
Swan Valley (25.7 mm) |
Grandview, Keld (1.0 mm) |
Southwest |
Melita (37.3 mm) |
Miniota (0.0 mm) |
Percent Normal Precipitation (PDF 1 MB)
Total Accumulated Precipitation (PDF 2 MB)
Table 2. Summary of measurements of total accumulated precipitation in Manitoba's Agricultural Regions.
Region |
Range of Normals (mm) |
Number of Stations Above Normal |
Wettest Location this Season (mm, % norm.) |
Driest Location this Season (mm, % norm.) |
Central |
159.2 → 192.9 |
32 (all) |
Winkler (340, 187%) |
Baldur (226, 121%) |
Eastern |
180.4 → 220.2 |
23 (all) |
Winnipeg (313, 173%) |
Lac Du Bonnet (195, 102%) |
Interlake |
157.0 → 187.3 |
15 |
Woodlands (291, 160%) |
Moosehorn (137, 84%) |
Northwest |
132.3 → 185.1 |
19 |
Pipe Lake (322, 186%) |
Swan River (160, 92%) |
Southwest |
151.4 → 187.2 |
40 (all) |
Shilo (327, 194%) |
Mountainside (193, 118%) |
Soil Moisture
Soil Moisture 0-30 cm (PDF 2 MB)
Soil Moisture 0-120 cm (PDF 2 MB)
Soil Moisture 0-30 cm shows a regional representation of soil moisture conditions for the top 30 cm on July 14, 2024, relative to field capacity. The majority of agro-Manitoba is showing wet or optimal soil moisture conditions at the surface depths.
Soil Moisture 0-120 cm shows a regional representation of soil moisture conditions for the top 120 cm on July 14, 2024, relative to field capacity. The majority of the province is showing wet conditions at the 0 - 120 cm depth.
Growing Degree Days
Total Accumulated Growing Degree Days (PDF 2MB)
Percent Normal Accumulated Growing Degree Days (PDF 2 MB)
Total accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1- July 14, 2024. Much of the East and Central regions have accumulated more than 675 GDD since May 1.
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 to July 14, 2024. GDD accumulation is near or below 100% of normal for the majority of Agro-Manitoba.
Table 3. Summary of growing degree days (GDD) and percent deviation from normal in Manitoba's Agricultural Regions.
Region |
Range of Normals (GDD) |
Number of Stations Above Normal |
Highest GDD Accumulation This Season (GDD, % norm.) |
Lowest GDD Accumulation This Season (GDD, % norm.) |
Central |
735 → 844 |
1 |
Winkler (827, 99%) |
Manitou (687, 84%) |
Eastern |
713 → 844 |
9 |
St. Adolphe (789, 101%) |
Sprague Lake (642, 89%) |
Interlake |
682 → 794 |
7 |
Selkirk (780, 98%) |
Fisherton (678, 97%) |
Northwest |
610 → 754 |
0 |
Ste. Rose (701, 99%) |
San Clara (578, 85%) |
Southwest |
643 → 795 |
3 |
Glenboro (739, 95%) |
Lake Audy (583, 88%) |
Corn Heat Units
Total Accumulated Corn Heat Units (PDF 2 MB)
Percent Normal Accumulated Corn Heat Units (PDF 2 MB)
Total Accumulated Corn Heat Units illustrates the total Corn Heat Units (CHU) for the growing season to date. More than 1150 CHU have accumulated in the majority of the Southwest, Central, Interlake and Eastern regions since May 1.
Percent Normal Accumulated Corn Heat Units represents the variation of accumulated Corn Heat Units (CHU) from the historical record over a 30-year period. CHU accumulation is below normal for the season. The majority of agricultural regions of the province have accumulated less than 100% of CHU when compared to normal.
Table 4. Summary of total accumulated corn heat units (CHU) and percent deviation from normal in Manitoba's Agricultural Regions.
Region |
Range of Normals (CHU) |
Number of Stations Above Normal |
Highest CHU Accumulation This Season (CHU, % norm.) |
Lowest CHU Accumulation This Season (CHU, % norm.) |
Central |
1208 → 1358 |
7 |
Winkler (1351, 101%) |
Manitou (1143, 87%) |
Eastern |
1193 → 1358 |
11 |
Steinbach (1311, 104%) |
Sprague Lake (1118, 93%) |
Interlake |
1146 → 1295 |
7 |
Selkirk (1282, 99%) |
Fisherton (1139, 99%) |
Northwest |
1023 → 1232 |
0 |
St. Rose (1164, 99%) |
The Pas (941, 92%) |
Southwest |
1084 → 1286 |
6 |
Wawanesa (1228, 104%) |
Lake Audey (1001, 91%) |
Potato Days
Total Accumulated P-Days (June 1 - July 14, 2024) represents the total accumulated physiological days for potatoes (P-Days) since June 1. P-Days accumulation begins at about 50% potato emergence. As a result, accumulation begins on June 1. Other heat accumulation starts from May 1. The majority of agro-Manitoba has accumulated more than 320 P-Days.
Percent Normal Accumulated P-Days (June 1 - July 14, 2024) represents the variation of accumulated physiological days for potatoes (P-Days) from the historical record over a 30-year period. The majority of agro-Manitoba has accumulated over 100% of normal P-Days so far this season.
Note: The information on the maps provides regional representation only. Field-specific conditions may be different from the information provided on the maps.
Seasonal Maps
First Fall Frost
- 10% Risk* Date of the First Fall Frost at 0°C (PDF 579 KB)
- 25% Risk* Date of the First Fall Frost at 0°C (PDF 576 KB)
- Average* Date of the First Fall Frost at 0°C (PDF 575 KB)
Monthly Precipitation 2021
- Percent of Normal Precipitation - May (PDF 488 KB)
- Total Accumulated Precipitation - May (PDF 488 KB)
- Percent of Normal Precipitation - June (PDF 488 KB)
- Total Accumulated Precipitation - June (PDF 490 KB)
- Percent of Normal Precipitation - July (PDF 482 KB)
- Total Accumulated Precipitation - July (PDF 487 KB)
- Percent of Normal Precipitation - August (PDF 488 KB)
- Total Accumulated Precipitation - August (PDF 499 KB)
- Percent of Normal Precipitation - September (PDF 477 KB)
- Total Accumulated Precipitation - September (PDF 478 KB)
Seasonal Reports
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.