Agriculture

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)  (August 8 - 14, 2022)  shows that precipitation across agro-Manitoba ranged from 0 to 91.7 mm in the past seven days across agro-ManitobaRiverton (91.7 mm), Swan River (30.2 mm), and Keld (22.6 mm) were the top three locations with the highest amount of precipitation last week. Most locations, especially in the Eastern, Central and Southwest regions received less than 3 mm. The main weather highlight was the thunderstorm at Riverton on Saturday, August 13. The location received 91 mm between 3 pm and 6 pm with peak wind gust of 77 km/hr. Arborg, which is about 18 km southwest of Riverton received only 10 mm during the same period.
  • Total Accumulated Precipitation (PDF 2 MB) (May 01- August 14, 2022) shows the total precipitation amount since May 1Riverton, McCreary and Arborg have reported the highest total accumulated precipitation at 480 mm, 440 mm, 428 mm, respectively. Most locations in the Interlake, Eastern and areas around Lake Manitoba have received 300 – 380 mm. Melita (193 mm) and Pierson (195 mm) have received the least amounts of total precipitation.
  • Percent of Normal Accumulated Precipitation (PDF 2 MB) (May 01 - August 14, 2022)  is based on historical record over a 30-year period. Areas west of Lake Winnipeg and east of the Riding Mountain National Park have received at least 150% of normal precipitation. Some locations in the northwest region (San Clara, Minitonas); southwest (Pierson, Melita) and eastern (Menisino) 80 – 90% of normal precipitation. Riverton (213%), Arborg (190%), and McCreary (178%) are the top three locations with the highest percent of normal precipitation.
  • Top 0-30cm Soil Moisture (PDF 643 KB) (August 14, 2022) shows a regional representation of soil moisture conditions for the top 30 cm on August 14, 2022 relative to field capacity.  Most locations have optimal surface soil moisture. It shows a continuously drying pattern compared to previous weeks. Some locations are showing dry to very dry surface soil moisture include areas in the far southwest corner, locations southeast of the Riding Mountain Park and areas around the Red River from Altona to Brunkild.
  • Top 0-120cm Soil Moisture (PDF 627 KB) (August 14, 2022)  shows a regional representation of soil moisture conditions for the top 120 cm on August 14, 2022 relative to field capacity. Most areas monitored showed wet to optimal conditions at the top 120 cm. The areas around Eden, Forrest, Pierson, Moosehorn and Morris are showing dry conditions at the entire soil profile.
  • Total Accumulated Growing Degree Days (PDF 2 MB) (May 01- August 14, 2022) shows the accumulated growing degree days (GDD) for the period of May 01 – August 14, 2022.  The highest total GDD accumulation was observed at Morden with 1,291 units. Areas from Austin in the central region to Richer in the eastern region and south to the International border have mostly accumulated at least 1,200 heat units. However, most areas in the northwest region have accumulated less than 1,080 units.
  • Percent Normal Accumulated Growing Degree Days  (PDF 2 MB) (May 01- August 14, 2022)        represents the variation of accumulated Growing Degree Days (GDD) from the historical record over a 30-year period.  Some areas in the southwest, Interlake and around Winnipeg have accumulated 100 – 105% of normal heat unit accumulation. Most areas have accumulated between 95 – 100%. The highest percent of normal accumulated GDD is at Arborg (112% of normal).
  • Total Accumulated Corn Heat Units (PDF 2 MB) (May 01- August 14, 2022) map illustrates the total accumulated Corn Heat Units (CHU) for the growing season to date. The northwest region has mostly accumulated less than 1,800 CHU. Areas near Morden (2,102) and Gretna (2,072) and Altona (2,063) have accumulated the most CHU since May 1.
  • Percent Normal Accumulated Corn Heat Units (PDF 2 MB) (May 01- August 14, 2022) represents the variation of accumulated corn heat units (CHU) from the historical record over a 30-year period. All regions have mostly accumulated between 95-105% of the historical accumulated CHU. Wawanesa has accumulated the highest percent normal accumulated CHU at 107% compared to the 30-year average.
  • Total Accumulated P-Days (PDF 2 MB) (June 06 – August 14, 2022) represents the total accumulated physiological days for potatoes (P-days) since June 6, 2022.  P-days accumulation has a different start date because accumulation commences at about 50% potato emergence. Other heat accumulations start from May 1. Taylor’s Point (593 units) have accumulated the highest P-days and areas around Lake Manitoba have received above 580 p-day units
  • Percent of Normal Accumulated P-Days (PDF 2 MB) (June 06 – August 14, 2022) represents the variation of accumulated physiological days for potatoes (P-days) from the historical record over a 30-year period.  Much of agro-Manitoba has accumulated above historical average P-Days since June 6 with most areas having above 105% of normal 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:
-          Current Weather Condition by Station.
-          Interactive Map of all weather stations with latest hourly weather information.
 
 

Seasonal Maps

Last Spring 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.