Agriculture

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

 

Special Maps and Report

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.

Higher resolution maps are available upon request.

Precipitation

Seven-Day Accumulated Precipitation  (PDF 2 MB)

September 22 - 28, 2025

Little precipitation fell this week with accumulations ranged from 0 mm to 5.5 mm (Table 1). The highest amount of rainfall was observed in the Eastern region with Gardenton accumulating 5.5 mm. With the exception of The Pas (1.2 mm), all other regions saw accumulations less than 0.5 mm.

Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba's Agricultural Regions (September 22 - 28, 2025).

Region
Wettest Location last seven days
Driest Location last seven days
Central
Gretna (0.2 mm)
Several (0 mm)
Eastern
Gardenton (5.5 mm)
Several (0 mm)
Interlake
Fisher Branch, Selkirk (0.2 mm)
Several (0 mm)
Northwest
The Pas (1.2 mm)
Several (0 mm)
Southwest
---
All (0 mm)

 

Percent Normal Precipitation (PDF 1 MB)

Total Accumulated Precipitation (PDF 2 MB)

Climate normals for total accumulated precipitation from May 1 to September 28 range from 254.6 mm to 397.2 mm (Table 2) and are based on 30-year historical data. The majority of the Northwest, Southwest, Central, and Eastern regions have accumulated more than 180 mm this growing season. Total precipitation accumulations this season remain below 60% compared to the 30-year average in the Interlake and parts of the Northwest and Eastern regions. Parts of the Southwest have accumulated more than 100% of normal precipitation levels since May 1.

Table 1. Summary of measurement of total accumulated precipitation in Manitoba's Agricultural Regions (May 1 - September 28, 2025).  

Region
Range of Normals (mm)
Percent of Stations Above Normal (%)
Wettest Location this Season (mm, % norm.)
Driest Location this Season (mm, % norm.)
Central
281.6 → 397.2
9
Starbuck (377, 104%)
Austin (204, 67%)
Eastern
320.5 → 396.9
6
Steinbach (397, 104%)
Pinawa (183, 49%)
Interlake
267.0 → 377.6
0
Lake Francis (252, 85%)
Fisher Branch (114, 36%)
Northwest
289.3 → 358.6
9
Ethelbert (429, 120%)
Laurier (159, 55%)
Southwest
254.6 → 331.2
25
Neepawa (396, 122%)
Souris (181, 55%)

 

Soil Moisture 

Soil Moisture 30cm (1 MB)

Soil Moisture 120cm (1 MB)

  1. Soil Moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on September 28, 2025 relative to field capacity. Soil moisture is variable across agro-Manitoba with areas within the same regions showing very dry to wet conditions. Large areas of the Interlake continue to show dry or very dry conditions. Optimal to wet conditions were prevalent in the Northwest, Southwest, Central, and the Eastern regions on September 28 with localized areas displaying dry, or very dry conditions.
  2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on September 28, 2025 relative to field capacity. Large portions of the Interlake are showing 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 very wet 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 – September 28, 2025. Much of the Southwest, Central, and East regions have accumulated more than 1700 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 – September 28, 2025. GDD Accumulations are 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 (May 1 - September 28, 2025) .

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
1522 → 1735
100
Winkler (1964, 114%)
Pilot Mound (1637, 107%)
Eastern
1558 → 1718
94
St. Adolphe (1862, 110%)
Sprague Lake (1564, 99%)
Interlake
1487 → 1718
100
Selkirk (1846, 110%)
Fisherton (1618, 109%)
Northwest
1294 → 1609
100
McCreary (1745, 110%)
San Clara (1470, 114%)
Southwest
1239 → 1691
100
Deloraine (1803, 112%)
Wasagaming (1422, 115%)

 

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 – September 28. More than 2700 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 – September 28. CHU accumulations are between 100% and 115% of normal for most regions.

Table 4. Summary of total accumulated corn heat units (CHU) and percent deviation from normal in Manitoba's Agricultural Regions (May 1 - September 28, 2025).

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
2463 → 2781
100
Winkler (3103, 113%)
Pilot Mound (2666, 108%)
Eastern
2526 → 2766
100
St. Adolphe (3013, 111%)
Sprague Lake (2662, 104%)
Interlake
2398 → 2755
100
Selkirk (2988, 111%)
Fisherton (2674, 112%)
Northwest
2104 → 2634
100
McCreary (2865, 111%)
San Clara (2458, 117%)
Southwest
2006 → 2687
100
Deloraine (2938, 114%)
Wasagaming (2412, 120%)

 

P-Days

Percent Normal P-Days (2 MB)

Total Accumulated P-Days (2 MB)

  1. Total Accumulated P-Days (June 1 – September 28) 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 870 P-Days so far this season.
  2. Percent of Normal Accumulated P-Days (June 1 – September 28) 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.

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

         

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.

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