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. 


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 576 KB)(May 11 – 17, 2020) shows that the majority of northwest agro-Manitoba received less than 5 mm of precipitation. Southern agro-Manitoba received precipitation amounts ranging between 5 and 15 mm. The southeast corner, and areas along the U.S. border received the most rainfall with maximums being observed at Sprague (27.7 mm), Sprague Lake (16.6 mm), and Killarney (15.7 mm).
  • Total Accumulated Precipitation Map (PDF 590 KB) (May 1 – 17, 2020) shows the total precipitation amount since the beginning of the growing season. Sprague (29 mm) has the highest total accumulated precipitation since May 1, 2020.  Areas along the U.S. border and to the far southwest have accumulated more than 15 mm. of precipitation this season.  A small area near Gladstone, Austin, Portage la Prairie and Lakeland has accumulated less than 5 mm of precipitation.
  • Percent of Normal Accumulated Precipitation (PDF 703 KB) (May 1 - 17, 2020) is based on historical record over a 30-year period.  The far southwest and southeast regions accumulated more than 50% of the normal accumulated precipitation for the period between May 1 and May 17. Waskada (91%), Sprague (87%), and Killarney (78%) are the top three locations with the highest percent of normal precipitation this growing season. The majority of the Southeast, Northwest, Interlake and Central regions received less than 50% of normal accumulated precipitation.
  • Soil Moisture 0 - 30 cm (PDF 588 KB)  shows the soil moisture conditions for the top 30 cm on May 18, 2020. The majority of agro-Manitoba is experiencing optimal to wet soil moisture conditions in the 0 - 30 cm depths. Areas with wet soil moisture conditions include the central region and parts of the Northwest.  Only Birch River, Shilo, and Moosehorn indicate dry soil moisture conditions at the surface mostly due to low water holding capacity of sandy soils. 
  • At this time, soil moisture levels 120 cm depths are indicating that there is frost present at many sites.  Since the presence of frost makes it difficult to accurately measure soil moisture, a map has not been created for this parameter. It is anticipated that conditions will allow for mapping of soil moisture at 120 cm in the coming weeks.  
  • Total Accumulation of Growing Degree Days (PDF 596 KB) shows the accumulated growing degree days for the period of May 1 – 17, 2020.  The maximum total Growing Degree Day (GDD) accumulation was observed in the far southwest corner of the province near Melita (50), Waskada (50), and Sinclair (47).  Far northwest regions and areas of the Interlake have accumulated less than 30 GDD. The majority of agro-Manitoba has between 30 and 40 total accumulated GDD.
  • Percent Normal Accumulated Growing Degree Days (PDF 607 KB) (May 1 - 17, 2020), represents the variation of accumulated GDD from the historical record over a 30-year period.  The majority of agro-Manitoba has accumulated 35-45% of normal GDD. Areas in the western portion of agro-Manitoba have accumulate more than 45% of normal GDD.  Melita (49%), St. Lazare (49%), and McAuley (48%) have the greatest percent normal accumulated GDD to May 17, 2020.
  • Total Accumulated Corn Heat Units (PDF 617 KB) (May 1 – 17, 2020)  illustrates the total accumulated corn heat units (CHU) for the growing season to date. Areas around Lake Winnipeg and Lake Manitoba have accumulated less than 60 CHU with Reedy Creek having accumulated 42 CHU.  The western part of agro-Manitoba have the highest total accumulated CHU areas in the southwest corner having values over 100 CHU.
  • Percent Normal Accumulated Corn Heat Units (PDF 608 KB) (May 1 – 17, 2020) represents the variation of accumulated CHU from the historical record over a 30-year period.  Areas in the west have accumulated over 50% of the historical normal CHU with The Pas accumulating the highest percent normal accumulated CHU at 65%. The majority of areas in central agro-Manitoba and the Interlake have accumulated less than 45% of the historical normal CHU.
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


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.