Climate averages 1991–2020
Bloomington (Indiana), United States weather
in August.
A hot, moderately wet month: the 2nd warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Bloomington (Indiana), United States: daytime highs average 28.8°C and nights cool to about 19.3°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 79 mm of rain on roughly 9 days, which makes August a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 42 min on an average August day.
The nearest other city in this atlas is Indianapolis (74 km away). In August its highs average 28.0°C, 0.9°C cooler than Bloomington (Indiana), United States, with 72 mm of rain.
Among the 498 cities listed in the United States, Bloomington (Indiana), United States ranks joint 291st of 498 for the warmest August highs and joint 257th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Bloomington (Indiana), United States is 1.1°C cooler than that mean.
From August to September, average highs fall by 3.5°C to 25.3°C, and monthly rainfall falls from 79 mm to 73 mm.
The annual picture
August in context
Monthly rainfall
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
Bloomington (Indiana), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.2°C-4.7°C | -4.7°C | 87 | 9.5 | 9.810 h |
| February | 5.7°C-3.3°C | -3.3°C | 74 | 8.5 | 10.711 h |
| March | 11.3°C1.4°C | 1.4°C | 101 | 10.8 | 11.912 h |
| April | 17.6°C7.3°C | 7.3°C | 128 | 12.4 | 13.213 h |
| May | 22.5°C13.0°C | 13.0°C | 130 | 13.4 | 14.314 h |
| June | 27.3°C17.9°C | 17.9°C | 111 | 11.9 | 14.915 h |
| July | 29.3°C19.9°C | 19.9°C | 88 | 11.4 | 14.615 h |
| August, selected | 28.8°C19.3°C | 19.3°C | 79 | 8.9 | 13.714 h |
| September | 25.3°C15.6°C | 15.6°C | 73 | 7.9 | 12.512 h |
| October | 18.5°C9.5°C | 9.5°C | 83 | 8.2 | 11.211 h |
| November | 11.0°C3.2°C | 3.2°C | 92 | 8.9 | 10.110 h |
| December | 5.2°C-1.9°C | -1.9°C | 86 | 10.1 | 9.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Indianapolis in AugustUnited States · 74 kmHigh 28.0°C · Low 18.9°C · 72 mm rain
- Carmel in AugustUnited States · 97 kmHigh 27.5°C · Low 18.5°C · 74 mm rain
- Fishers in AugustUnited States · 98 kmHigh 27.6°C · Low 18.4°C · 74 mm rain
- Louisville in AugustUnited States · 121 kmHigh 30.0°C · Low 20.2°C · 71 mm rain
- Lafayette (Indiana), United States in AugustUnited States · 142 kmHigh 27.6°C · Low 18.4°C · 82 mm rain
- Muncie in AugustUnited States · 150 kmHigh 27.1°C · Low 18.0°C · 79 mm rain
- Evansville in AugustUnited States · 160 kmHigh 30.3°C · Low 21.4°C · 76 mm rain
- Cincinnati in AugustUnited States · 174 kmHigh 28.5°C · Low 18.9°C · 75 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 Bloomington) is explained once on the Bloomington (Indiana), United States year overview and on the Sources, method and limits page.