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. 

 

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.

Special Weather Report

Higher resolution maps are available upon request.

Precipitation

Seven-Day Accumulated Precipitation (PDF 2MB) 

Agro-Manitoba received variable amounts of precipitation over the past seven days. Precipitation for the past week ranged week from 0 mm to 7.9 mm (Table 1) with most regions receiving less than 4 mm. Ingelow (7.9 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
 Lakeland (6.5 mm)
  Gretna, Altona (1.3 mm)
Eastern
 Winnipeg (3.0 mm)
  Prawda (0.6 mm)
Interlake
 Riverton (5.9 mm)
  Moosehorn (0.9 mm)
Northwest
 Alonsa (3.8 mm)
  Several (0.0 mm)
Southwest
 Ingelow (7.9 mm)
  Russell (0.9 mm)

 

Percent Normal Precipitation (PDF 1 MB)

Total Accumulated Precipitation (PDF 2 MB) 

Climate normals for total accumulated precipitation from May 1 to October 27 range from 300.7 mm to 435.4 mm (Table 2) and are based on 30-year historical data. Precipitation accumulation in most areas have exceeded 100% of normal precipitation since May 1. Much of the Central and Eastern regions have accumulated more than 100% compared to the 30-year average.
 
Table 2. Summary of measurement of total accumulated precipitation in Manitoba’s Agricultural Regions.
Region
Range of Normals (mm)
Number of Stations Above Normal
Wettest Location this Season (mm, % norm.)
Driest Location this Season (mm, % norm.)
Central
342.3 → 385.6
24
Winkler (654, 176%)
Plumas (320, 94%)
Eastern
347.9 → 435.4
13
Richer (560, 143%)
Lac Du Bonnet (287, 72%)
Interlake
354.5 → 388.1
4
Fisherton (435, 122%)
Eriksdale (271, 76%)
Northwest
313.4 → 393.2
8
Pipe Lake (477, 129%)
Swan River (228, 63%)
Southwest
300.7 → 366.3
22
Shilo (423, 132%)
Mountainside (253, 77%)
 

Soil Moisture

Soil Moisture 0-30 cm  (PDF 2 MB)

Soil Moisture 0-120 cm  (PDF 2 MB)

  1. Soil Moisture 0 - 30 cm shows a regional representation of soil moisture conditions for the top 30 cm on October 27, 2024 relative to field capacity. Soil moisture is variable across agro-Manitoba with the majority showing optimal to very dry soil moisture conditions at the surface depths.
  2. Soil Moisture 0 - 120 cm shows a regional representation of soil moisture conditions for the top 120 cm on October 27, 2024 relative to field capacity. The majority of the province is showing optimal at the 0 to 120 cm depth. Some localized regions are showing wet or dry conditions

Growing Degree Days

Total Accumulated Growing Degree Days (PDF 2MB)

Percent Normal Accumulated Growing Degree Days (PDF 2 MB)

  1. Total Accumulation of Growing Degree Days shows the accumulated growing degree days (GDD) for the period of May 1 – October 27, 2024. Much of the East and Central regions have accumulated more than 1850 GDD since May 1.
  2. 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 – October 27, 2024. GDD Accumulation is between 105% and 115% of normal for the majority of agro-Manitoba.

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

Region
Range of Normals (GDD)
Number of Stations Above Normal
Highest GDD Accumulation This Season (GDD, % norm.)
Lowest GDD Accumulation This Season (GDD, % norm.)
Central
1615 → 1854
26
Winkler (2097, 113%)
Cartwright (1770, 108%)
Eastern
1560 → 1842
19 (all)
Steinbach (2019, 120%)
Sprague Lake (1681, 105%)
Interlake
1502 → 1755
15 (all)
Selkirk (1961, 112%)
Fisherton (1763, 114%)
Northwest
1366 → 1655
18 (all)
Amaranth (1835, 112%)
San Clara (1542, 104%)
Southwest
1402 → 1741
33 (all)
Boissevain (1928, 111%)
Oakburn (1516, 100%)

 

Corn Heat Units

Total Accumulated Corn Heat Units (PDF 2 MB)

Percent Normal Accumulated Corn Heat Units (PDF 2 MB)

  1. Total Accumulated Corn Heat Units illustrates the total accumulated Corn Heat Units (CHU) for the growing season to date. More than 3000 CHU have accumulated in the majority of the Southwest, Central, Interlake, and Eastern regions since May 1.
  2. Percent Normal Accumulated Corn Heat Units represents the variation of accumulated Corn Heat Units (CHU) from the historical record over a 30-year period. CHU accumulation is near or above normal for the season. The majority of agricultural regions in Manitoba have accumulated more than 110% 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 Region.

Region
Range of Normals (CHU)
Number of Stations Above Normal
Highest CHU Accumulation This Season (CHU, % norm.)
Lowest CHU Accumulation This Season (CHU, % norm.)
Central
2651 → 2980
28 (all)
Winkler (3382, 113%)
Cartwright (2967, 110%)
Eastern
2609 → 2968
19 (all)
Steinbach (3333, 120%)
Sprague Lake (2864, 108%)
Interlake
2514 → 2854
15 (all)
Selkirk (3232, 113%)
Narcisse (2943, 115%)
Northwest
2269 → 2743
18 (all)
Amaranth (3049, 114%)
San Clara (2617, 105%)
Southwest
2371 → 2814
33 (all)
Boissevain (3187, 113%)
Oakburn (2615, 104%)

Potato Days

Total Accumulated P-Days (PDF 2 MB)

Percent Normal Accumulated P-Days  (PDF 1 MB)

  1. Total Accumulated P-Days (June 1 – October 27) represents the total accumulated physiological days for potatoes (P-days) since June 1.  P-days accumulation begins at about 50% potato emergence. As a result, accumulation begins on June 1. Other heat accumulation starts from May 1. The majority of agro-Manitoba has accumulated more than 960 P-Days.
  2. Percent of Normal Accumulated P-Days (June 1 – October 27) represents the variation of accumulated physiological days for potatoes (P-days) from the historical record over a 30-year period.  The majority of agro-Manitoba has accumulated over 115% of normal P-Days
 

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:
 

Seasonal Maps

First Fall 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.