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. 

• Current Weather Conditions - Interactive Map
• Current Conditions by Station
• Current Conditions Summary - Central, Eastern & Interlake
• Current Conditions Summary - Northwest & Southwest
• Hourly Summary
• Daily Summary
• Seasonal Summary
• Current Soil Temperature

 

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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 upon request.

 

Precipitation

Eight-Day Accumulated Precipitation (May 11-18)

Variable precipitation accumulated throughout agro-Manitoba over the past eight days.  The Interlake and Northwest regions had the highest accumulations over the past eight days rangin from 3.4 to 26.3 mm.  The highest amount of rainfall was observed at Minitonas at 26.3 mm.

 Table 1. Range of measurements of seven-day accumulated precipitation in Manitoba’s Agricultural Regions (May 11-18, 2026)

Percent Normal Precipitation (PDF 1.6 MB)

Total Accumulated Precipitation (PDF 1.6 MB)

Climate normals for total accumulated precipitation from May 1 to May 18 range from 20.3 mm to 41.4 mm (Table 2) and are based on 30-year historical data. Since May 1, less than 30 mm of precipitation has accumulated throughout the province. The majority of southern agro-Manitoba has accumulated less than 50% of normal precipitation. The Interlake and Northwest regions have accumulated more precipitation with parts of the Northwest near Swan River seeing seasonal accumulations above normal.

Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions. (May 1-18, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Wettest Location this Season (mm, % norm.)	Driest Location this Season (mm, % norm.)
Central	29.8 →41.4	0	Winkler (16.2, 41)	Carman (5.9,16)
Eastern	26.4 → 41.3	0	Stead (21.3, 81)	Clakleigh (12.0, 45)
Interlake	23.1 → 33.3	0	Taylor's Point (21.1, 79)	Grandview (5.8, 25)
Northwest	21.8 → 30.3	17	Minitonas (26.3, 115)	Grandview (5.8, 25)
Southwest	20.3 → 34.1	2	Lake Audey (23.0, 95)	Glenboro (4.0, 13)

 

Soil Moisture

Soil Moisture 30cm

Soil moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on May 18, 2026 relative to field capacity. Soil moisture is variable across agro-Manitoba with most areas showing wet or optimal conditions.

Soil Moisture 120 cm

Soil moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on May 18, 2026 relative to field capacity. The majority of agricultural regions are showing optimal to wet soil moisture conditions at the 0-120 cm depth.

 

Growing Degree Days

Total Accumulated Growing Degree Days (PDF 1.6MB)

Total Accumulated Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 - May 18, 2026. GDD accumulations ranged between 21 and 81GDD so far this growing season.  Continued cool temperatures slowed accumulations of GDD.

Percent Normal Accumulated Growing Degree Days (PDF 1.7 KB)

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 - 18, 2026. GDD Accumulations are below 75% of normal for the majority of agro-Manitoba.  Areas of the Southwest region have seen up to 90% of normal GDD.

 Table 3. Summary of total accumulated growing degree days (GDD) and percent deviation from normal in Manitoba's Agricultural Regions (May 1-18, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest GDD accumulation this season (GDD, % norm.)	Lowest GDD accumulation this season (GDD, % norm.)
Central	80 → 101	0	Winkler (75, 77)	Lakeland (50, 60)
Eastern	78 → 98	0	Kleefeld (56, 60)	Sprague Lake (30, 37)
Interlake	70 → 92	0	Stonewall (50, 55)	Gimli (35, 49)
Northwest	53 → 83	0	McCreary (58, 70)	The Pas (21, 39)
Southwest	53 → 99	0	Dand (81, 86)	Wasagaming (36, 67)

Corn Heat Units

Total Accumulated Corn Heat Units (PDF 1.6 KB)

Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to from May 1 - 18, 2026. More than 100 CHU have accumulated in much of the Central, Northwest , and Southwest regions since May 1.

Percent Normal Accumulated Corn Heat Units (PDF 1.6 KB)

Percent Normal Accumulated Corn Heat Units represents the variation of accumulated Corn Heat Units (CHU) from the historical record over a 30-year period for the period of May 1 - 18, 2026. Below normal CHU accumulations were observed in the Interlake, East, and Central regions, while accumulations were near normal for most of the Northwest and Southwest regions.

 Table 4. Summary of total accumulated corn heat units (CHU) and percent deviation from normal in Manitoba's Agricultural Regions (May 1-18, 2026)

Region	Range of Normals (mm)	Stations Above Normal (%)	Highest CHU accumulation this season (CHU, % norm.)	Lowest CHU accumulation this season (CHU, % norm.)
Central	126 → 160	26	Winkler (157, 102)	Lakeland (102, 78)
Eastern	122 → 156	0	St. Pierre (126, 82)	Sprague Lake (87, 67)
Interlake	108 → 143	0	Woodlands (112, 86)	Taylor's Point (77, 67)
Northwest	82 → 130	8	McCreary (116, 89)	The Pas (47, 58)
Southwest	82 → 157	84	Waskada (173, 110)	Wasagaming (96, 117)

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