Bloomington weather in August: Bloomington, Illinois: normal highs, lows, rain and records for August
Bloomington in August has a normal high of 83°F and a normal low of 61°F, a daily mean of 72°F, falling from 83°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 4.13 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 105 mm of precipitation in August.
- NOAA stationBloomington (5 mi W)
- Station IDUSC00110764
- Location40.49°N 89.09°W
- Elevation852 ft (260 m)
- From the center6 miles
- Population79,232
- Jan 31° 16°
- Feb 36° 19°
- Mar 49° 29°
- Apr 62° 39°
- May 72° 50°
- Jun 81° 60°
- Jul 84° 63°
- Aug 83° 61°
- Sep 76° 54°
- Oct 63° 42°
- Nov 48° 30°
- Dec 35° 21°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Bloomington in August?
The normal high is 83°F and the normal low 61°F, for a daily mean of 72.0°F. August is 1.8°F cooler than July and 6.8°F warmer than September. August is the 2nd warmest month of the year in Bloomington and the 3rd wettest. Across the month the normal high falls 2°F, from 83°F on August 1 to 81°F on August 31. From one year to the next August's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 69°F and 75°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 28%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 83°F | 63°F | 25% | 18% |
| August 8 | 83°F | 62°F | 26% | 19% |
| August 15 | 83°F | 62°F | 27% | 20% |
| August 22 | 83°F | 61°F | 28% | 21% |
| August 31 | 81°F | 59°F | 28% | 21% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 83°F | 63°F | 25% | 18% | 14 h 20 min |
| August 2 | 83°F | 63°F | 25% | 18% | 14 h 20 min |
| August 3 | 83°F | 63°F | 25% | 18% | 14 h 20 min |
| August 4 | 83°F | 63°F | 26% | 19% | 14 h 10 min |
| August 5 | 83°F | 62°F | 26% | 19% | 14 h 10 min |
| August 6 | 83°F | 62°F | 26% | 19% | 14 h 10 min |
| August 7 | 83°F | 62°F | 26% | 19% | 14 h 10 min |
| August 8 | 83°F | 62°F | 26% | 19% | 14 h 10 min |
| August 9 | 83°F | 62°F | 26% | 19% | 14 h |
| August 10 | 83°F | 62°F | 26% | 19% | 14 h |
| August 11 | 83°F | 62°F | 27% | 19% | 14 h |
| August 12 | 83°F | 62°F | 27% | 20% | 14 h |
| August 13 | 83°F | 62°F | 27% | 20% | 13 h 50 min |
| August 14 | 83°F | 62°F | 27% | 20% | 13 h 50 min |
| August 15 | 83°F | 62°F | 27% | 20% | 13 h 50 min |
| August 16 | 83°F | 62°F | 27% | 20% | 13 h 50 min |
| August 17 | 83°F | 62°F | 28% | 20% | 13 h 50 min |
| August 18 | 83°F | 61°F | 28% | 21% | 13 h 40 min |
| August 19 | 83°F | 61°F | 28% | 21% | 13 h 40 min |
| August 20 | 83°F | 61°F | 28% | 21% | 13 h 40 min |
| August 21 | 83°F | 61°F | 28% | 21% | 13 h 40 min |
| August 22 | 83°F | 61°F | 28% | 21% | 13 h 30 min |
| August 23 | 82°F | 61°F | 28% | 21% | 13 h 30 min |
| August 24 | 82°F | 61°F | 28% | 21% | 13 h 30 min |
| August 25 | 82°F | 61°F | 28% | 21% | 13 h 30 min |
| August 26 | 82°F | 60°F | 28% | 21% | 13 h 20 min |
| August 27 | 82°F | 60°F | 28% | 21% | 13 h 20 min |
| August 28 | 82°F | 60°F | 28% | 21% | 13 h 20 min |
| August 29 | 82°F | 60°F | 28% | 21% | 13 h 20 min |
| August 30 | 82°F | 60°F | 28% | 21% | 13 h 10 min |
| August 31 | 81°F | 59°F | 28% | 21% | 13 h 10 min |
- Normal high
- 83°FAugust average
- Normal low
- 61°FAugust average
- Precipitation
- 4.13 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 14 h 20 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 25
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00110764; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Bloomington in August?
On a given August day the chance of 0.01 inch or more is 27% on average, highest around August 29 (28%). In all, 4.13 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Bloomington, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00110764.
How does August in Bloomington compare across Illinois?
Across the 144 places PlainClimate covers in Illinois, August normal highs run from 79°F in Barrington to 89°F in Anna; Bloomington's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.