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 Conditions by Station
• Current Weather Conditions - Interactive Map
• Current Conditions Summary - Central, Eastern & Interlake
• Current Conditions Summary - Northwest & Southwest
• Hourly Summary
• Daily Summary
• Seasonal Summary
• Current Soil Temperature

 

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 151 KB)
• Archived Crop Weather Reports

Higher resolution maps are available upon request.

Precipitation

Eight-Day Accumulated Precipitation  (PDF 2 MB)

August 4  - August 10, 2025

Isolated rainfall and storm events occurred across the southern portion of the province this week, with accumulations ranging from 5.8 mm to 145.6 mm (Table 1). Some storms were accompanied by heavy rains and strong winds. Tornadoes (causing minimal damage) were confirmed by the Northern Tornadoes Project near Dugald (August 6), Birds Hill (August 6), and Grande-Clairiere (August 5). Much of the Northwest, Southwest, and southern portions of the Interlake regions received more than 30 mm of precipitation of the past seven days. The highest amount of rainfall was observed at Ethelbert with 145.6 mm.

Table 1. Range of measurements of four-day accumulated precipitation in Manitoba's Agricultural Regions.

 

Percent Normal Precipitation (PDF 2 MB)

Percent Total Precipitation (PDF 2 MB)

Climate normals for total accumulated precipitation from May 1 to August 10 range from 191.8 mm to 282.9 mm (Table 2) and are based on 30-year historical data. The majority of the Southwest, Central, and Eastern regions have accumulated more than 100 mm this growing season. Total precipitation accumulations have improved in the Northwest region and in parts of the Interlake. The majority of the Northwest region has now accumulated more than 50% compared to the 30 -year average.  Parts of the Southwest have accumulated higher than normal precipitation levels since May 1.

Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions.

Region	Range of Normals (mm)	Percent of Stations Above Normal (%)	Wettest Location this Season (mm, % norm.)	Driest Location this Season (mm, % norm.)
Central	211.7 → 282.9	3	Winkler (248, 95%)	Elie (119, 50%)
Eastern	219.5 → 278.2	0	Gardenton (192, 73%)	Pinawa (108, 42%)
Interlake	191.8 → 265.9	0	Lake Francis (175, 83%)	Fisher Branch (61, 28%)
Northwest	209.6 → 264.9	0	Ethelbert (257, 97%)	Laurier (97, 46%)
Southwest	194.8 → 257.9	21	Neepawa (283, 118%)	Newdale (121, 55%)

 

 

Soil Moisture 

Soil Moisture 30cm (2 MB)

Soil Moisture 120cm (2 MB)

1. Soil Moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on August 10, 2025 relative to field capacity. Soil moisture is variable across agro-Manitoba with areas within the same regions showing very dry to wet conditions. Recent rains have improved soil moisture conditions in the Northwest, Southwest, and southern portions of the Interlake. Although there are some localized areas of dry or very dry conditions, much of agro-Manitoba is displaying optimal to wet conditions on August 10.
2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on August 10, 2025 relative to field capacity. The Interlake and northern portions of the East regions are showing dry to very dry conditions. The majority of the remaining regions are showing wet or optimal conditions at the 0 to 120 cm depth with some localized areas showing dry or very dry conditions.
   

Growing Degree Days

Total Accumulation of Growing Degree Days (2 MB)

Percent Normal Accumulated Growing Degree Days (2 MB)

1. Total Accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 – August 10, 2025. Much of the Southwest, Interlake, Central, and East regions have accumulated more than 1100 GDD since May 1.
2. 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 10, 2025. Above normal temperatures early in the season have resulted in GDD Accumulations between 100% and 115% of normal for the majority of agro-Manitoba.

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

Region	Range of Normals (GDD)	Percent of Stations Above Normal (%)	Highest GDD Accumulation This Season (GDD, % norm.)	Lowest GDD Accumulation This Season (GDD, % norm.)
Central	1046 → 1200	100	Winkler (1341, 113%)	Pilot Mound (1088, 104%)
Eastern	1075 → 1187	94	Winnipeg (1283, 112%)	Sprague Lake (1064, 97%)
Interlake	1035 → 1185	94	Selkirk (1260, 109%)	Fisherton (1093, 106%)
Northwest	908 → 1113	100	Amaranth (1172, 105%)	San Clara (978, 108%)
Southwest	863 → 1162	100	Deloraine (1210, 109%)	Wasagaming (946, 110%)

 

Corn Heat Units

Total Accumulation of Corn Heat Units (2 MB)

Percent Normal Accumulation Corn Heat Units (2 MB)

1. Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to from May 1 – August 10. More than 1800 CHU have accumulated in the majority of the  Southwest, Interlake, Central, and Eastern regions since May 1.
2. 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 10. CHU accumulations are between 100% and 120% of normal for all regions.

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	1702 → 1926	100	Winkler (2110, 111%)	Pilot Mound (1772, 104%)
Eastern	1743 → 1911	100	St. Adolphe (2053, 110%)	Sprague Lake (1805, 102%)
Interlake	1669 → 1898	100	Selkirk (2028, 109%)	Fisher Branch (1793, 106%)
Northwest	1484 → 1818	100	Amaranth (1920, 106%)	San Clara (1640, 110%)
Southwest	1403 → 1855	100	Deloraine (1969, 111%)	Wasagaming (1612, 115%)

 

P-Days

Percent Normal P-Days (2 MB)

Total Accumulated P-Days (2 MB)

1. Total Accumulated P-Days (June 1 – August 10) 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 majority of agro-Manitoba has accumulated more than 540 P-Days so far this season.
2. Percent of Normal Accumulated P-Days (June 1 – August 10) 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 95% of normal P-Days so far this season.

Other links of interest to access current weather conditions recorded at each station:

-          Current Weather Condition by Station.

-          Interactive Map of all weather stations with latest hourly weather information.

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)

         

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.