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. 

Special Maps

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 on request.

  • Seven-Day Accumulated Precipitation Map (PDF 2 MB)  (September 19 - 25, 2022)  
    Precipitation was measured at many of the Manitoba Ag Weather Program stations, and ranged from 0.5 to 32.1 mm (Table 1).  The Northwest and Southwest regions received the most rain, with relatively even coverage.  Some locations in the Interlake region received comparable amount of range, but coverage was more variable.  The Central and Eastern regions received the least rain.
    Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions.
    Region
    Wettest Location last Week
    Driest Location last Week
    Central
    Portage (18.3 mm)
    Pilot Mound (0.5 mm)
    Eastern
    Stead (10.9 mm)
    St Adolphe (0.7 mm)
    Interlake
    Riverton (20.7 mm)
    Inwood (1.2 mm)
    Northwest
    The Pas (32.1 mm)
    Inglis (4.4 mm)
    Southwest
    Argue (26.6 mm)
    Boissevain (2.1 mm)
  • Total Accumulated Precipitation (PDF 2 MB) (May 01- September 25, 2022) 
  • Percent of Normal Accumulated Precipitation (PDF 2 MB) (May 01 - September 25, 2022)  
    Climate Normals for the total accumulated precipitation for the 38th week of the year ranged from 271.4 to 389.2 mm (Table 2), and are based in 30-year historical data from May 1 – September 25.  Despite last week’s rain, several locations in the Northwest region lag behind the climate normals for this time of year.  Most locations in the Central, Eastern, and Southwest regions meet or surpass the normals, while all locations in the Interlake region have exceeded the historical average for the region. 
    Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions
    Region
    Range of Normals (mm)
    Stations Above Normal (%)
    Wettest Location this Season (mm, % norm.)
    Driest Location this Season (mm, % norm.)
    Central
    303.0 → 341.9
    83
    Bagot (487.2, 153)
    Deerwood (290.8, 87)
    Eastern
    334.2 → 389.2
    95
    Rosa (584.8, 169)
    Sprague Lake (374.2, 96)
    Interlake
    315.2 → 349.2
    100
    Riverton (530.4, 167)
    Clarkleigh (325.1, 101)
    Northwest
    271.4 → 348.4
    60
    McCreary (531.0, 152)
    San Carla (242.5, 72)
    Southwest
    271.6 → 333.8
    90
    Forrest (456.4, 148)
    Pierson (216.5, 76)
  • Top 0-30cm Soil Moisture (PDF 638 KB) (September 25, 2022) 
    Last week’s rain did little to increase soil moisture in the top 0-30 cm layer.  Many locations are optimal, with wet locations around Lake Manitoba and the Eastern region and a smaller number dry and very dry locations in the Central, Northwest, and Southwest regions.
  • Top 0-120cm Soil Moisture (PDF 632 KB) (September 25, 2022)  
    Similar to the top 0-30 cm layer, last week’s rain did little to increase soil moisture in the top 0-120 cm layer.  Many locations are optimal, with wet locations in Eastern, Central, and Southwest region.  Few locations are dry or very dry.
  • Total Accumulated Growing Degree Days (PDF 2 MB) (May 01- September 25, 2022) 
  • Percent Normal Accumulated Growing Degree Days (PDF 2 MB) (May 01- September 25, 2022)       
    Normals for the total accumulated growing degree days for the 38th week of the year ranged from 1,324 to 1,748 (Table 3), and are based in 30-year historical data.  Most locations in the province meet or surpass normals for this time of year.
    Table 3. Summary of calculated total growing degree days in Manitoba’s Agricultural Regions
    Region
    Range of Normals (GDD)
    Stations Above Normal (%)
    Most GDDs this Season (GDD; % norm.)
    Fewest GDDs this Season (GDD; % norm.)
    Central
    1,533 → 1,748
    90
    Winkler (1,841; 106)
    Windygates (1,556; 89)
    Eastern
    1,490 → 1,740
    76
    St Adolphe (1,753; 107)
    Sprague Lake (1,437; 95)
    Interlake
    1,444 → 1,668
    87
    Arborg (1,720; 119)
    Fisherton (1,556; 105)
    Northwest
    1,324 → 1,584
    80
    McCreary (1,649; 106)
    San Carla (1,384; 97)
    Southwest
    1,350 → 1,652
    94
    Melita (1,741; 106)
    Wasagaming (1,324; 96)
  • Total Accumulated Corn Heat Units (PDF 2 MB) (May 01- September 25, 2022) 
  • Percent Normal Accumulated Corn Heat Units (PDF 2 MB) (May 01- September 25, 2022) 
    Normals for the total accumulated corn heat units for the 38th week of the year range from 2,191 to 2,790 (Table 4), and are based in 30-year historical data.  Most locations in the province meet or surpass normals for this time of year.
    Table 4. Summary of calculated total corn heat units in Manitoba’s Agricultural Regions
    Region
    Range of Normals (CHU)
    Stations Above Normal (%)
    Most CHUs this Season (CHU; % norm.)
    Fewest CHUs this Season (CHU; % norm.)
    Central
    2,496 → 2,790
    90
    Morden (2,980; 107)
    Windygates(2582; 89)
    Eastern
    2,464 → 2,780
    86
    Steinbach (2,879; 110)
    Sprague Lake (2448; 98)
    Interlake
    2,395 → 2,700
    93
    Selkirk (2,779; 103)
    Fisherton (2579; 106)
    Northwest
    2,191 → 2,629
    85
    McCreary (2,709; 108)
    San Carla (2323; 99)
    Southwest
    2,244 → 2,634
    95
    Boissevain (2,810; 107)
    Wasagaming (2245; 98)
  • Total Accumulated P-Days (PDF 2 MB) (June 06 – September 25, 2022) 
  • Percent of Normal Accumulated P-Days (PDF 2 MB) (June 06 – September 25, 2022) 
    Normals for the total accumulated P-days for the 38th week of the year range from 702 to 843 (Table 5) are based in 30-year historical data and are measured beginning June 6th.  All locations in the province meet or surpass normals for this time of year.
    Table 5. Summary of calculated P-days in Manitoba’s Agricultural Regions
    Region
    Range of Normals (P-Day)
    Stations Above Normal (%)
    Most P-Days this Season (P-day; % norm.)
    Fewest P-Days this Season (P-day; % norm.)
    Central
    752 → 818
    100
    St Claude (899; 116)
    Windygates (830; 101)
    Eastern
    738 → 808
    100
    Steinbach (879; 113)
    Sprague Lake (763; 101)
    Interlake
    729 → 843
    100
    Tayor’s Point (891; 106)
    Arborg (810; 108)
    Northwest
    708 → 843
    100
    Reedy Creek (870; 103)
    San Carla (780; 108)
    Southwest
    702 → 786
    100
    Eden (869; 111)
    Wasagaming (777; 109)
The information on the maps provides regional representation. Field-specific conditions may be different from the information provided on the maps.

 

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

Seasonal Maps

First Fall Frost

Monthly Precipitation 2021

         

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.