Climate averages 1991–2020
Lethbridge weather
in August.
A warm, fairly dry month: the 2nd warmest and the joint 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Lethbridge: daytime highs average 25.2°C and nights cool to about 12.8°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 35 mm of rain on roughly 6 days, which makes August a fairly dry month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 27 min on an average August day.
The nearest other city in this atlas is Calgary (175 km away). In August its highs average 22.3°C, 2.9°C cooler than Lethbridge, with 63 mm of rain.
Among the 86 cities listed in Canada, Lethbridge ranks joint 6th of 86 for the warmest August highs and 4th of 86 for the driest August (rainfall, lowest first). The mean August high of those 86 cities is 23.8°C; Lethbridge is 1.4°C warmer than that mean.
From August to September, average highs fall by 5.6°C to 19.7°C, and monthly rainfall rises from 35 mm to 37 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
Lethbridge climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.9°C-9.7°C | -9.7°C | 14 | 4.4 | 8.69 h |
| February | 1.5°C-8.2°C | -8.2°C | 13 | 4.0 | 10.110 h |
| March | 6.1°C-4.9°C | -4.9°C | 22 | 6.0 | 11.912 h |
| April | 11.6°C0.2°C | 0.2°C | 40 | 7.9 | 13.714 h |
| May | 17.1°C5.4°C | 5.4°C | 59 | 9.1 | 15.315 h |
| June | 20.9°C9.9°C | 9.9°C | 92 | 10.9 | 16.216 h |
| July | 25.6°C13.3°C | 13.3°C | 35 | 6.8 | 15.916 h |
| August, selected | 25.2°C12.8°C | 12.8°C | 35 | 5.8 | 14.414 h |
| September | 19.7°C8.3°C | 8.3°C | 37 | 5.8 | 12.713 h |
| October | 11.9°C2.1°C | 2.1°C | 28 | 5.8 | 10.811 h |
| November | 4.1°C-3.8°C | -3.8°C | 22 | 5.3 | 9.19 h |
| December | -0.6°C-8.4°C | -8.4°C | 16 | 4.4 | 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
- Calgary in AugustCanada · 175 kmHigh 22.3°C · Low 10.1°C · 63 mm rain
- Airdrie in AugustCanada · 198 kmHigh 21.4°C · Low 10.3°C · 68 mm rain
- Red Deer in AugustCanada · 294 kmHigh 21.4°C · Low 11.2°C · 67 mm rain
- Missoula in AugustUnited States · 326 kmHigh 28.6°C · Low 14.9°C · 19 mm rain
- Spokane Valley in AugustUnited States · 395 kmHigh 28.7°C · Low 15.1°C · 14 mm rain
- Spokane in AugustUnited States · 407 kmHigh 29.3°C · Low 15.7°C · 12 mm rain
- Sherwood Park in AugustCanada · 426 kmHigh 21.0°C · Low 11.6°C · 59 mm rain
- Edmonton in AugustCanada · 430 kmHigh 21.7°C · Low 12.1°C · 58 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 Lethbridge) is explained once on the Lethbridge year overview and on the Sources, method and limits page.