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

Minimum Air Temperature Map October 6, 2023 - through October 7, 2023 (PDF 2 MB)
Minimum Air Temperature Map October 9, 2023 - through October 10, 2023 (PDF 2 MB)
Manitoba Crop Weather Report October 6, 2023 - through October 7, 2023 (PDF 25 KB)
Manitoba Crop Weather Report October 9, 2023 - through October 10, 2023 (PDF 25 KB)

Agro-Manitoba Weather Extremes

Agro-Manitoba Weather Extremes of 2022 (PDF 1 MB)
Agro-Manitoba Weather Extremes of 2021 (PDF 1 MB)
Agro-Manitoba Weather Extremes of 2020 (PDF 1 MB)

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.

Crop Weather Report (PDF 48 KB)
Archived Crop Weather Reports

Higher resolution maps are available upon request.

Precipitation

Seven-Day Accumulated Precipitation (PDF 2 MB)

Precipitation was varied across agro-Manitoba over the past seven days with values ranging from 0.0 mm to 40.3 mm (Table 1). The highest amounts of precipitation in the past sevem days was in the Southwest and Northwest regions. Sinclair (40.3 mm) received the most precipitation.

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	Cartwright (32.4 mm)	Brunkild (0.5 mm)
Eastern	Sprague Lake (13.0 mm)	Kleefeld (0 mm)
Interlake	Stonewall (6.5 mm)	Several (0 mm)
Northwest	Ashville (12.5 mm)	The Pas, Reedy Creek (0.2 mm)
Southwest	Sinclair (40.3 mm)	Russell (7.7 mm)

Percent Normal Precipitation (PDF 2 MB)

Total Accumulated Precipitation (PDF 2 MB)

Climate normal for total accumulated precipitation from May 1 to 12 range from 11.7 mm to 26.3 mm (Table 2), and are based on 30-year historical data. Total accumulated rainfall was variable across agro-Manitoba for the start of the growing season. Most of the Southwest, and areas fo the Northwest, Central and East regions have accumulated less than 100% of normal precipitation since May 1. Parts of the Ingterlake and Eastern regions have accumulated less than 100% of the 30-year average.

Table 2. Summary of measurements 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	16.4 → 26.3	29	Cartwright (60, 228%)	Brunkild (15, 74%)
Eastern	16.4 → 22.3	11	Sprague Lake (33, 148%)	Lac Du Bonnet (5, 27%)
Interlake	16.1 → 22.0	5	Clarkleigh (26, 131%)	Riverton (8, 48%)
Northwest	11.7 → 23.7	15	Ethelbert (47, 208%)	The Pas (4, 37%)
Southwest	15.6 → 26.3	39	Sinclair (56, 279%)	St. Lazare (17, 80%)

Soil Moisture

Soil Moisture 0-30 cm (PDF 2 MB)

Soil Moisture 0-120 cm (PDF 2 MB)

Soil Moisture 0-30 cm shows a regional representation of soil moisture conditions for the top 30 cm on May 12, 2024, relative to field capacity. The majority of agro-Manitoba is showing optimal to wet soil moisture conditions at the surface depths.

Soil Moisture 0-120 cm shows a regional representation of soil moisture conditions for the top 120 cm on May 12, 2024, relative to field capacity. The majority of the province is showing optimal to wet conditions to the 120 cm depth.

Growing Degree Days

Total Accumulated Growing Degree Days (PDF 2 MB)

Percent Normal Accumulated Growing Degree Days (PDF 2 MB)

Total accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1- May 12, 2024. Much of the East, Central and Southwest regions have accumulated more than 70 GDD in the past five days.

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 to 12, 2024. The majority of agro-Manitoba has accumulated more than 115% of the 30-year average of GDD.

Table 3. Summary of growing degree days (GDD) and precent deviation from normal in Manitoba's Agricultural Regions.

Region	Range of Normals (GDD)	Stations Above Normal (%)	Highest GDD Accumulation This Season (GDD, % norm.)	Lowest GDD Accumulation This Season (GDD, % norm.)
Central	47 → 69	30 (all)	Emerson (84, 122%)	Manitou (68, 105%)
Eastern	48 → 69	22	Winnipeg (83, 142%)	Sprague Lake (53, 98%)
Interlake	35 → 61	18 (all)	Selkirk (82, 135%)	Arborg (64, 147%)
Northwest	35 → 55	23 (all)	Ste. Rose (76, 155%)	The Pas (51, 148%)
Southwest	43 → 66	41	Waskada (77, 116%)	Wasagaming (44, 92%)

Corn Heat Units

Total Accumulated Corn Heat Units (PDF 2 MB)

Percent Normal Accumulated Corn Heat Units (PDF 2 MB)

Total Accumulated Corn Heat Units illustrates the total Corn Heat Units (CHU) for the growing season to date. More than 115 CHU have accumulated in the Southwes, Central, and Eastern regions since May 1.

Percent Normal Accumulated Corn Heat Units represents the variation of accumulated Corn Heat Units (CHU) from the historical record over a 30-year period. All regions of the province have accumulated less than 90% of CHU when compared to normal.

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)	Stations Above Normal (%)	Highest CHU Accumulation This Season (CHU, % norm.)	Lowest CHU Accumulation This Season (CHU, % norm.)
Central	83 → 123	27	Emerson (138, 112%)	Manitou (109, 94%)
Eastern	99 → 123	22	St. Pierre (134, 123%)	Pinawa (103, 101%)
Interlake	63 → 109	18 (all)	Selkirk (131, 121%)	Riverton (109, 124%)
Northwest	70 → 104	22	Swan River (125, 133%)	The Pas (91, 130%)
Southwest	88 → 117	37	Waskada (129, 111%)	Wasagaming (85, 95%)

Note: The information on the maps provides regional representation only. 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

First Fall Frost

10% Risk* Date of the First Fall Frost at 0°C (PDF 579 KB)
25% Risk* Date of the First Fall Frost at 0°C (PDF 576 KB)
Average* Date of the First Fall Frost at 0°C (PDF 575 KB)

Monthly Precipitation 2021

Percent of Normal Precipitation - May (PDF 488 KB)
Total Accumulated Precipitation - May (PDF 488 KB)
Percent of Normal Precipitation - June (PDF 488 KB)
Total Accumulated Precipitation - June (PDF 490 KB)
Percent of Normal Precipitation - July (PDF 482 KB)
Total Accumulated Precipitation - July (PDF 487 KB)
Percent of Normal Precipitation - August (PDF 488 KB)
Total Accumulated Precipitation - August (PDF 499 KB)
Percent of Normal Precipitation - September (PDF 477 KB)
Total Accumulated Precipitation - September (PDF 478 KB)

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.

Agriculture