Climate averages 1991–2020
Rochester (Minnesota), United States weather
in August.
A warm, 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 Rochester (Minnesota), United States: daytime highs average 25.4°C and nights cool to about 17.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 96 mm of rain on roughly 10 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 01 min on an average August day.
The nearest other city in this atlas is Bloomington (Minnesota), United States (112 km away). In August its highs average 26.2°C, 0.8°C warmer than Rochester (Minnesota), United States, with 99 mm of rain.
Among the 498 cities listed in the United States, Rochester (Minnesota), United States ranks joint 465th of 498 for the warmest August highs and joint 370th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Rochester (Minnesota), United States is 4.5°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 21.4°C, and monthly rainfall falls from 96 mm to 84 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
Rochester (Minnesota), United States climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -4.8°C-13.1°C | -13.1°C | 29 | 6.7 | 9.39 h |
| February | -2.1°C-10.8°C | -10.8°C | 30 | 5.8 | 10.410 h |
| March | 5.1°C-4.3°C | -4.3°C | 60 | 8.8 | 11.912 h |
| April | 12.6°C2.7°C | 2.7°C | 92 | 11.4 | 13.413 h |
| May | 19.2°C9.7°C | 9.7°C | 115 | 13.0 | 14.715 h |
| June | 24.4°C15.5°C | 15.5°C | 131 | 12.3 | 15.415 h |
| July | 26.5°C18.0°C | 18.0°C | 97 | 10.4 | 15.115 h |
| August, selected | 25.4°C17.0°C | 17.0°C | 96 | 10.0 | 14.014 h |
| September | 21.4°C12.9°C | 12.9°C | 84 | 9.3 | 12.613 h |
| October | 13.7°C5.8°C | 5.8°C | 68 | 9.0 | 11.011 h |
| November | 5.3°C-1.8°C | -1.8°C | 49 | 6.9 | 9.710 h |
| December | -1.9°C-9.2°C | -9.2°C | 37 | 7.1 | 9.09 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
- Bloomington (Minnesota), United States in AugustUnited States · 112 kmHigh 26.2°C · Low 18.0°C · 99 mm rain
- Saint Paul in AugustUnited States · 114 kmHigh 26.1°C · Low 17.6°C · 98 mm rain
- Minneapolis in AugustUnited States · 124 kmHigh 26.2°C · Low 17.6°C · 98 mm rain
- Plymouth, United States in AugustUnited States · 135 kmHigh 25.9°C · Low 17.5°C · 99 mm rain
- Brooklyn Park in AugustUnited States · 138 kmHigh 26.0°C · Low 17.5°C · 98 mm rain
- Cedar Rapids in AugustUnited States · 234 kmHigh 26.9°C · Low 17.8°C · 94 mm rain
- Madison in AugustUnited States · 269 kmHigh 26.1°C · Low 17.2°C · 95 mm rain
- Iowa City in AugustUnited States · 273 kmHigh 27.4°C · Low 18.4°C · 96 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 Rochester) is explained once on the Rochester (Minnesota), United States year overview and on the Sources, method and limits page.