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

  

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)

July 14 - July 20, 2025

Isolated rainfall resulted in varying amounts of precipitation over the past week with accumulations ranging from 0 mm to 41.2 mm (Table 1).  The western portions of the Southwest and Northwest regions received the most rain over the past seven days. The highest accumulation of rainfall was at Ruthenia (41.2 mm).

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

Region
Wettest Location last seven days
Driest Location last seven days
Central
Lakeland (24.9 mm)
Elie (0 mm)
Eastern
Sprague (16.1 mm)
Lac du Bonnet (0.1 mm)
Interlake
Petersfield (9.5 mm)
Selkirk (0.8 mm)
Northwest
Ruthenia (41.2 mm)
Amaranth (3.4 mm)
Southwest
Argue, Minto (36.3 mm)
Carberry EC (5.4 mm)

 

Percent Normal Precipitation (PDF 2 MB)

Percent Total Precipitation (PDF 2 MB)

Climate normals for total accumulated precipitation from May 1 to July 20 range from 165.6 mm to 251.1 mm (Table 2) and are based on 30-year historical data. The majority of the Southwest and Central regions have accumulated more than 100 mm this growing season. The East, Northwest, and Interlake regions have large areas of accumulations below 50% of normal. Much of the Central and Southwest regions have accumulated less than 70% of the 30-year average of precipitation.

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
182.9 → 228.3
0
Winkler (187, 82%)
Portage (61, 30%)
Eastern
184.9 → 251.1
0
Gardenton (162, 71%)
Winnipeg (65, 33%)
Interlake
165.6 → 220.6
0
Petersfield (95, 51%)
Inwood (42, 25%)
Northwest
170.3 → 214.9
0
Inglis (151, 82%)
Amaranth (59, 31%)
Southwest
168.2 → 225.0
0
Neepawa (189, 91%)
Birtle (83, 40%)

 

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 July 20, 2025 relative to field capacity. Soil moisture is variable across agro-Manitoba with areas within the same regions showing very dry to wet conditions. Dry and very dry conditions are prevalent in the East, Interlake, and portions of the Central regions.
  2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on July 20, 2025 relative to field capacity. The Interlake and northern portions of the Nortwest and 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.

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 – July 20, 2025. Much of the Southwest, Central, and East regions have accumulated more than 850 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 – July 20, 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
771 → 896
100
Winkler (1013, 115%)
Pilot Mound (802, 104%)
Eastern
784 → 881
95
Winnipeg (960, 114%)
Sprague Lake (781, 97%)
Interlake
750 → 873
100
Selkirk (935, 110%)
Fisher Branch (790, 104%)
Northwest
659 → 811
92
Ashville (860, 113%)
San Clara (722, 110%)
Southwest
618 → 857
100
Deloraine (905, 111%)
Wasagaming (686, 111%)

 

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 – July 20. More than 1350 CHU have accumulated in the majority of the 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 – July 20. 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
1257 → 1443
100
Winkler (1588, 113%)
Pilot Mound (1296, 103%)
Eastern
1272 → 1425
100
St. Adolphe (1540, 111%)
Sprague Lake (1343, 102%)
Interlake
1212 → 1402
100
Selkirk (1508, 110%)
Fisher Branch (1315, 107%)
Northwest
1074 → 1319
100
Amaranth (1410, 107%)
San Clara (1214, 113%)
Southwest
1003 → 1379
100
Deloraine (1465, 111%)
Wasagaming (1177, 117%)

 

P-Days

Percent Normal P-Days (2 MB)

Total Accumulated P-Days (2 MB)

  1. Total Accumulated P-Days (June 1 – July 20) 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 350 P-Days so far this season.
  2. Percent of Normal Accumulated P-Days (June 1 – July 20) 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

         

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.