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)

Seven-Day Accumulated Precipitation (September 29 – October 5)

Rainfall warnings were issued from October 3 to October 5 for areas in several regions. Precipitation (sometimes heavy) and strong winds over 80 km/hr were observed in the Central, Eastern, and Interlake regions on October 5. Accumulations this week ranged from 0 mm to 70.7 mm (Table 1). The highest amount of rainfall was observed in the Central and Eastern regions with Sprague Lake accumulating 70.7 mm. A swath of the Northwest region received minimal precipitation.

Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions. (September 29 – October 5, 2025)

Region
Wettest Location last seven days
Driest Location last seven days
Central
Holland (48.1 mm)
Plumas (14.6 mm)
Eastern
Sprague Lake (70.7 mm)
Dominion City (24.0 mm)
Interlake
Petersfield (46.6 mm)
Moosehorn (0.7 mm)
Northwest
Birch River (18.1 mm)
Grandview (0 mm)
Southwest
Killarney (46.6 mm)
St. Lazare (0.4 mm)

 

Percent Normal Precipitation (PDF 1 MB)

Total Accumulated Precipitation (PDF 2 MB)

Climate normals for total accumulated precipitation from May 1 to October 5 range from 262.7 mm to 407.3 mm (Table 2) and are based on 30-year historical data. Large areas of the Central and Eastern regions have accumulated more than 220 mm of precipitation 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. Parts of the Southwest and Central regions have accumulated more than 100% of normal precipitation levels since May 1.

Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions (May 1 – October 5, 2025) 

Region
Range of Normals (mm)
Percent of Stations Above Normal (%)
Wettest Location this Season (mm, % norm.)
Driest Location this Season (mm, % norm.)
 
Central
288.9 → 407.3
19
Starbuck (419, 113%)
Austin (245, 79%)
 
Eastern
327.7 → 406.4
6
Sprague Lake (367, 103%)
Elma (218, 59%)
 
Interlake
273.6 → 384.9
0
Stonewall (290, 75%)
Fisher Branch (135, 42%)
 
Northwest
297.0 → 366.2
13
Ethelbert (431, 118%)
Laurier (161, 54%)
 
Southwest
262.7 → 340.5
30
Neepawa (411, 124%)
Shoal Lake (201, 67%)
 

 

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 October 5, 2025 relative to field capacity. Soil moisture is variable across agro-Manitoba with areas within the same regions showing very dry to wet conditions. Some areas of the Interlake continue to show dry conditions while other areas are showing optimal or wet conditions. Due to recent precipitation, wet conditions were prevalent in the Southwest, Central, and Eastern regions on October 5.
  2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on October 5, 2025 relative to field capacity. Areas of the Interlake are showing dry or very dry conditions, while the majority of the region is showing optimal conditions. Most 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 – October 5, 2025. Much of the Southwest, Central, and East regions have accumulated more than 1800 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 – October 5, 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 – October 5, 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
1550 → 1768
100
Winkler (2057, 118%)
Pilot Mound (1723, 111%)
Eastern
1586 → 1750
100
St. Adolphe (1956, 113%)
Sprague Lake (1643, 103%)
Interlake
1510 → 1750
100
Selkirk (1937, 113%)
Fisherton (1690, 112%)
Northwest
1314 → 1638
100
McCreary (1817, 112%)
San Clara (1524, 116%)
Southwest
1258 → 1724
100
Deloraine (1884, 115%)
Wasagaming (1486, 118%)

 

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 – October 5. Above normal temperatures this past week led to continued accumulation of CHU. More than 2800 CHU have accumulated in most 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 – October 5. CHU accumulations are between 105% and 120% 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 – October 5, 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
2507 → 2832
100
Winkler (3247, 116%)
Pilot Mound (2801, 111%)
Eastern
2569 → 2816
100
St. Adolphe (3164, 115%)
Sprague Lake (2791, 107%)
Interlake
2435 → 2805
100
Selkirk (3134, 114%)
Fisherton (2793, 115%)
Northwest
2135 → 2678
100
Amaranth (2997, 113%)
San Clara (2546, 119%)
Southwest
2035 → 2739
100
Deloraine (3069, 116%)
Wasagaming (2519, 124%)

 

P-Days

Percent Normal P-Days (2 MB)

Total Accumulated P-Days (2 MB)

  1. Total Accumulated P-Days (June 1 – October 5) 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 900 P-Days so far this season.
  2. Percent of Normal Accumulated P-Days (June 1 – October 5) 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 105% 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.