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
• Current Winter Wheat 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 41 KB)
• Archived Crop Weather Reports

Higher resolution maps are available upon request.

Precipitation

Eght-Day Accumulated Precipitation (PDF 2 MB)

Agro-Manitoba received some much-needed precipitation over the past eight days. Isolated events brought variable rain accumulations throughout the province. Variable temperatures over the week resulted in mixed precipitation in some areas including ice pellets and snow. Precipitation for the past week ranged week from 3.2 mm to 88.5 mm (Table 1) with most regions receiving more than 10 mm. Morden (88.5 mm) received the most precipitation.

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 May 19 range from 21.6 mm to 44.8 mm (Table 2) and are based on 30-year historical data. Accumulations over the past eight days brought seasonal accumulations closer to normal in most areas. The East and eastern portions of the Interlake have accumulations under 70% of normal.  Accumulations in the Southwest and parts of the Central regions are more than 150% of the 30-year average since May 1.

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

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 May 19, 2025 relative to field capacity. Soil moisture is variable across agro-Manitoba. The majority of the Northwest, Southwest, Central and Interlake regions are showing wet conditions. Most of the East and eastern portion of the Interlake is showing optimal soil moisture conditions at the surface depths.
2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on May 19, 2025 relative to field capacity. The majority of the province is showing wet to very wet conditions at the 0 to 120 cm depth. A portion of the Eastern region is showing optimal 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 – May 19, 2025. Much of the Southwest and Central and East regions have accumulated more than 140 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 – May 19, 2025. Recent above normal temperatures have resulted in GDD Accumulations above 130% of normal for all of agro-Manitoba.

Corn Heat Units

1. Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to date. More than 225 CHU have accumulated in the majority of the Southwest, 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. CHU accumulations are well above normal so far this season. All of agro-Manitoba has accumulated more than 130% 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

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.