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

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 455 KB) (September 14 - 20, 2020) shows a small variation in precipitation across agro-Manitoba ranging from 0 mm to 5 mm in the past seven days at our weather station locations.  The stations with the most precipitation this week include Fisherton (5 mm) and Gimli (3 mm). The majority of agro-Manitoba received less than 1 mm of precipitation.
  • Total Accumulated Precipitation Map (PDF 522 KB) (May 1 - September 20, 2020) shows the total precipitation amount since the beginning of the growing season. Gardenton (414 mm) has the highest total accumulated precipitation since May 1, 2020, followed by Sprague (395 mm).  Areas around Riding Mountain Park and south to the TransCanada highway have accumulated more than 270 mm.  The lowest total accumulated precipitation is at Minto (135 mm).
  • Percent of Normal Accumulated Precipitation (PDF 628 KB) (May 1 - September 20, 2020) is based on historical record over a 30-year period. Much of the Central and Interlake regions have received less than 80% of the normal accumulated precipitation for the period between May 1 and September 20. Minto (41%) and Inwood (52%) have accumulated the lowest percent of normal precipitation. Much of eastern agro-Manitoba and a large portion of the Southwest accumulated more than 80% of normal precipitation.  Newdale (137%) and Rivers (134%) are the top two locations with the highest percent of normal precipitation this growing season.
  • Soil Moisture 0 - 30cm (PDF 519 KB) shows a regional representation of soil moisture conditions for the top 30 cm on September 20, 2020.  Areas near Pierson, Boissevain, Minto, and Birch River are currently indicating very dry to dry top soil moisture conditions. Some areas in the Interlake, Eastern, and Central agro-Manitoba are showing dry conditions.
  • Soil Moisture 0 - 120cm (PDF 519 KB) shows a regional representation of soil moisture conditions for the 0-120 cm depths on September 20, 2020. Areas near Oakburn, Glenboro, Elma, and Altona are showing wet conditions at 0 - 120 cm depth. 
  • Total Accumulation of Growing Degree Days (PDF 472 KB) shows the accumulated growing degree days (GDD) for the period of May 01 – September 20, 2020.  The maximum total GDD accumulation was observed at Winkler (1,755), and Portage (1,724).  The majority of the Northwest has accumulated less than 1,500 GDD.
  • Percent Normal Accumulated Growing Degree Days (PDF 485 KB) (May 1 - September 20, 2020)        represents the variation of accumulated Growing Degree Days (GDD) from the historical record over a 30-year period.  The majority of agro-Manitoba has accumulated more than 100% of normal GDD. A small area of central, Southwest, and the Northwest have accumulated less than 100% of normal accumulated GDD. Windygates (88%) and Manitou (92%) have the lowest percent normal accumulated GDD. Arborg has the highest percent normal accumulated GDD with 108%.
  • Total Accumulated Corn Heat Units (PDF 472 KB) (May 1 - September 20, 2020) illustrates the total accumulated corn heat units (CHU) for the growing season to date. San Clara has accumulated the lowest total accumulated CHU with 2,210.  The majority of southern agro-Manitoba has accumulated more than 2,450 CHU. Winkler has accumulated the most CHU this season with 2,795.
  • Percent Normal Accumulated Corn Heat Units (PDF 483 KB) (May 1 - September 20, 2020)   represents the variation of accumulated CHU from the historical record over a 30-year period.  Much of the Northwest has accumulated less than 102% of the historical accumulated CHU. Windygates has accumulated the lowest percent normal accumulated CHU at 91%.  Much of southern agro-Manitoba and the Interlake has accumulated more than 102% of normal CHU. Alexander has accumulated the highest percent normal accumulated CHU at 108%.
  • Total Accumulated P-Days (PDF 478 KB) (June 1 - September 20, 2020) represents the total accumulated physiological days for potatoes (P-days) since June 1, 2020.  P-days accumulation has a different start date (June 1) because accumulation commences at about 50% potato emergence. Other heat accumulation starts from May 1. The majority of southern agro-Manitoba has accumulated more than 780 P-days since June 1. Much of the Northwest and the parts of the Interlake have accumulated less than 780 P-days with San Clara (734) and Sprague Lake (741) accumulating the lowest P-days.  St. Claude (834) has the highest P-Day accumulation.
  • Percent of Normal Accumulated P-Days (PDF 482 KB) (June 1 - September 20, 2020) represents the variation of accumulated physiological days for potatoes (P-days) from the historical record over a 30-year period.  Much of the Southwest region has accumulated more than 102% of the normal accumulation of P-Days. Alexander (108%) and Forrest (108%) have the highest percent normal accumulation of P-days. Reedy Creek (93%) and Windygates (95%) have the lowest percent normal accumulation of P-days. 

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

         

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.5