Climate averages 1991–2020
Winnipeg weather
in August.
A warm, moderately wet month: the 2nd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Winnipeg: daytime highs average 24.1°C and nights cool to about 14.4°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 76 mm of rain on roughly 10 days, which makes August a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 28 min on an average August day.
The nearest other city in this atlas is Fargo (335 km away). In August its highs average 25.9°C, 1.8°C warmer than Winnipeg, with 82 mm of rain.
Among the 86 cities listed in Canada, Winnipeg ranks joint 46th of 86 for the warmest August highs and joint 44th of 86 for the driest August (rainfall, lowest first). The mean August high of those 86 cities is 23.8°C; Winnipeg is 0.3°C warmer than that mean.
From August to September, average highs fall by 5.6°C to 18.5°C, and monthly rainfall falls from 76 mm to 68 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Winnipeg climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -12.0°C-21.0°C | -21.0°C | 16 | 4.9 | 8.69 h |
| February | -9.0°C-18.7°C | -18.7°C | 14 | 3.7 | 10.110 h |
| March | -0.9°C-10.7°C | -10.7°C | 25 | 6.2 | 11.812 h |
| April | 9.1°C-2.1°C | -2.1°C | 36 | 6.3 | 13.714 h |
| May | 16.5°C5.5°C | 5.5°C | 80 | 10.8 | 15.415 h |
| June | 22.0°C12.4°C | 12.4°C | 98 | 12.4 | 16.316 h |
| July | 24.5°C15.2°C | 15.2°C | 88 | 11.5 | 15.916 h |
| August, selected | 24.1°C14.4°C | 14.4°C | 76 | 9.8 | 14.514 h |
| September | 18.5°C9.4°C | 9.4°C | 68 | 9.1 | 12.713 h |
| October | 9.5°C2.0°C | 2.0°C | 47 | 8.1 | 10.811 h |
| November | -0.4°C-7.4°C | -7.4°C | 28 | 6.0 | 9.19 h |
| December | -8.7°C-16.4°C | -16.4°C | 22 | 5.7 | 8.28 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Fargo in AugustUnited States · 335 kmHigh 25.9°C · Low 16.1°C · 82 mm rain
- Bismarck in AugustUnited States · 435 kmHigh 26.9°C · Low 15.9°C · 58 mm rain
- Duluth in AugustUnited States · 507 kmHigh 23.6°C · Low 17.8°C · 102 mm rain
- Regina in AugustCanada · 536 kmHigh 24.0°C · Low 13.2°C · 61 mm rain
- Thunder Bay in AugustCanada · 598 kmHigh 22.3°C · Low 15.6°C · 67 mm rain
- Brooklyn Park in AugustUnited States · 604 kmHigh 26.0°C · Low 17.5°C · 98 mm rain
- Plymouth, United States in AugustUnited States · 609 kmHigh 25.9°C · Low 17.5°C · 99 mm rain
- Minneapolis in AugustUnited States · 618 kmHigh 26.2°C · Low 17.6°C · 98 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Winnipeg) is explained once on the Winnipeg year overview and on the Sources, method and limits page.