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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 (June 1-7)
Precipitation was variable throughout agro-Manitoba over the past seven days. Severe storms occurred in many regions between June 2 and June 4 bringing intense rainfall, strong winds, and hail. Three confirmed tornados were reported by Environment and Climate Change Canada. Tornados were spotted in the Manitou and Carman areas. Areas of the Northwest continued to get precipitation during the later part of the week with heavy rainfalls triggering overland flood warnings.
Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions (June 1-7, 2026)
Region |
Wettest location last week |
Driest location last week |
Central |
Winkler (97.2 mm) |
Portage and Portage EC (11.9 mm) |
Eastern |
Dominion City (59.2 mm) |
Elma (3.1 mm) |
Interlake |
Moosehorn (86.6 mm) |
Gimli (5.7 mm) |
Northwest |
Minitonas (139.7 mm) |
Laurier (16.9 mm) |
Southwest |
Forrest (73.3 mm) |
Minto, Ninette (6.7 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 June 7 range from 54.6 mm to 98.0 mm (Table 2) and are based on 30-year historical data. Since May 1, the large portions of the Northwest, Interlake, and Central regions have accumulated more than 60 mm of precipitation. Recent precipitation events have brough seasonal accumulations closer to normal for the Central and areas around Riding Mountain National Park regions. The majority of the Eastern region and the Southwest are well below normal for precipitation accumulations. Southern areas of the Central region, and northern portions of the Interlake and Northwest have exceeded normal accumulations for this time of year. Areas around Swan River and Moosehorn area hav more than 200% of normal precipitation. Minitonas sits at over 300% of normal precipitation.
Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions. (June 1-7, 2026)
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Wettest Location this Season (mm, % norm.) |
Driest Location this Season (mm, % norm.) |
Central |
73.2→ 93.2 |
12 |
Winkler (126.5, 136) |
Portage EC (30.5, 39) |
Eastern |
67.8→ 98.0 |
4 |
Dominion City (77.9, 87) |
Prawda (17.1, 20) |
Interlake |
60.3→ 85.6 |
24 |
Moosehorn (120.6,200) |
Gimli (31.7, 47) |
Northwest |
54.6 → 84.1 |
46 |
Minitonas (186.6, 307) |
The Pas (43.4, 80) |
Southwest |
61.2 → 83.2 |
14 |
Forrest (99.0, 136) |
Ninette (20.9, 28) |
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 June 7, 2026 relative to field capacity. Most areas are showing wet or optimal conditions. Northern areas of the Northwest and Interlake are showing very wet conditions due to extensive rains.
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 June 7, 2026 relative to field capacity. The majority of agricultural regions are showing wet conditions at the 0-120 cm depths. Areas of the Eastern and Interlake regions are showing optimal conditions. Parts of the Northwest and western areas of the Interlake are showing very wet conditions.
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 – June 7, 2026. GDD accumulations ranged between 244 and 358 GDD so far this growing season. Hot temperatures this week contributed to further significant increases in GDD. Most of Southern Manitoba has accumulated more than 290 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 – June 7, 2026. GDD Accumulations are above normal for the all of agro-Manitoba. Most of the Southwest region have accumulated more than 115% 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- June 7, 2026)
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Highest GDD accumulation this season (GDD, % norm.) |
Lowest GDD accumulation this season (GDD, % norm.) |
Central |
244 → 293 |
100 |
Winkler (356, 122) |
Lakeland (296, 113) |
Eastern |
390 → 473 |
97 |
St. Adolphe (327, 115) |
Sprague Lake (249, 98) |
Interlake |
225 → 283 |
100 |
Selkirk (321, 117) |
Gimli (266, 113) |
Northwest |
188 → 251 |
100 |
Ste. Rose (288, 119) |
The Pas (244, 129) |
Southwest |
175 → 286 |
100 |
Dand (358, 129) |
Wasagaming (247, 141) |
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 – June 7. There was a substantial increase in CHU accumulations due to recent above normal temperatures. More than 480 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 – June 7. 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 - June 7, 2026)
Region |
Range of Normals (mm) |
Stations Above Normal (%) |
Highest CHU accumulation this season (CHU, % norm.) |
Lowest CHU accumulation this season (CHU, % norm.) |
Central |
401 → 482 |
100 |
Winkler (581, 124) |
Lakeland (488, 117) |
Eastern |
390 → 473 |
100 |
St. Pierre (542, 118) |
Sprague Lake (434, 105) |
Interlake |
358 → 451 |
100 |
Selkirk (519, 119) |
Gimli (448, 119) |
Northwest |
298 → 402 |
100 |
Swan River (485, 126) |
The Pas (398, 134) |
Southwest |
275 → 460 |
100 |
Dand (588, 132) |
Wasagaming (448, 163) |
P-Days
Total Accumulated P-Days (June 1-7, 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. The southern regions of agro-Manitoba have accumulated more than 54 P-Days so far this season.
Percent of Normal Accumulated P-Days (june 1-7, 2026) represents the variation of accumulated physiological days for potatoes (P-Days) from the historical record over a 30-year period. Recent hot temperatures brought majority of agro-Manitoba PDay accumulations to over 115% of normal so far this season.
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.