Elgin weather in August: Elgin, Illinois: normal highs, lows, rain and records for August
Elgin in August has a normal high of 82°F and a normal low of 61°F, a daily mean of 72°F, falling from 84°F on the 1st to 80°F by the 31st. Measurable precipitation falls on 10 days in a normal August, 4.33 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 16°C, 110 mm of precipitation in August.
- NOAA stationElgin
- Station IDUSC00112736
- Location42.06°N 88.29°W
- Elevation763 ft (233 m)
- From the center3 miles
- Population114,701
- Jan 30° 14°
- Feb 34° 17°
- Mar 46° 26°
- Apr 59° 37°
- May 70° 48°
- Jun 80° 58°
- Jul 84° 63°
- Aug 82° 61°
- Sep 76° 53°
- Oct 63° 41°
- Nov 48° 30°
- Dec 36° 20°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Elgin in August?
The normal high is 82°F and the normal low 61°F, for a daily mean of 71.8°F. August is 1.9°F cooler than July and 7.5°F warmer than September. August is the 2nd warmest month of the year in Elgin and the 3rd wettest. Across the month the normal high falls 4°F, from 84°F on August 1 to 80°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 74°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 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 84°F | 63°F | 33% | 21% |
| August 8 | 83°F | 62°F | 33% | 21% |
| August 15 | 83°F | 62°F | 32% | 20% |
| August 22 | 82°F | 61°F | 32% | 20% |
| August 31 | 80°F | 59°F | 31% | 20% |
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 | 84°F | 63°F | 33% | 21% | 14 h 30 min |
| August 2 | 84°F | 63°F | 33% | 21% | 14 h 30 min |
| August 3 | 84°F | 63°F | 33% | 21% | 14 h 20 min |
| August 4 | 83°F | 63°F | 33% | 21% | 14 h 20 min |
| August 5 | 83°F | 63°F | 33% | 21% | 14 h 20 min |
| August 6 | 83°F | 63°F | 33% | 21% | 14 h 20 min |
| August 7 | 83°F | 62°F | 33% | 21% | 14 h 10 min |
| August 8 | 83°F | 62°F | 33% | 21% | 14 h 10 min |
| August 9 | 83°F | 62°F | 33% | 21% | 14 h 10 min |
| August 10 | 83°F | 62°F | 33% | 21% | 14 h 10 min |
| August 11 | 83°F | 62°F | 33% | 21% | 14 h 10 min |
| August 12 | 83°F | 62°F | 32% | 21% | 14 h |
| August 13 | 83°F | 62°F | 32% | 21% | 14 h |
| August 14 | 83°F | 62°F | 32% | 21% | 14 h |
| August 15 | 83°F | 62°F | 32% | 20% | 14 h |
| August 16 | 83°F | 62°F | 32% | 20% | 13 h 50 min |
| August 17 | 82°F | 61°F | 32% | 20% | 13 h 50 min |
| August 18 | 82°F | 61°F | 32% | 20% | 13 h 50 min |
| August 19 | 82°F | 61°F | 32% | 20% | 13 h 50 min |
| August 20 | 82°F | 61°F | 32% | 20% | 13 h 40 min |
| August 21 | 82°F | 61°F | 32% | 20% | 13 h 40 min |
| August 22 | 82°F | 61°F | 32% | 20% | 13 h 40 min |
| August 23 | 82°F | 60°F | 32% | 20% | 13 h 40 min |
| August 24 | 82°F | 60°F | 32% | 20% | 13 h 30 min |
| August 25 | 81°F | 60°F | 32% | 20% | 13 h 30 min |
| August 26 | 81°F | 60°F | 32% | 20% | 13 h 30 min |
| August 27 | 81°F | 60°F | 31% | 20% | 13 h 30 min |
| August 28 | 81°F | 59°F | 31% | 20% | 13 h 20 min |
| August 29 | 81°F | 59°F | 31% | 20% | 13 h 20 min |
| August 30 | 81°F | 59°F | 31% | 20% | 13 h 20 min |
| August 31 | 80°F | 59°F | 31% | 20% | 13 h 10 min |
- Normal high
- 82°FAugust average
- Normal low
- 61°FAugust average
- Precipitation
- 4.33 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 14 h 30 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 21
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00112736; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Elgin in August?
On a given August day the chance of 0.01 inch or more is 32% on average, highest around August 3 (33%). In all, 4.33 in falls on 10 days of a normal August, 1 of them with an inch or more.
In a normal August in Elgin, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00112736.
What are the records for August in Elgin?
The warmest August temperature on this station's record (since 1983) is 98°F, on August 18, 1988; the coldest is 40°F, on August 28, 1986. The wettest August brought 15.69 in (2007).
The August mean against the 1991-2020 normal of 71.8°F: 2021 76.2°F (+4.4), 2022 71.9°F (+0.1), 2023 72.2°F (+0.4), 2024 72.2°F (+0.4), 2025 72.0°F (+0.2), 2026 72.1°F (+0.3). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.2°F | +4.4°F | 3.94 in |
| 2022 | 71.9°F | +0.1°F | 5.76 in |
| 2023 | 72.2°F | +0.4°F | 1.66 in |
| 2024 | 72.2°F | +0.4°F | 2.47 in |
| 2025 | 72.0°F | +0.2°F | 3.47 in |
| 2026 | 72.1°F | +0.3°F | 5.13 in |
Source: records: ACIS, station USC00112736; recent months: ACIS, station USC00112736. Records and recent months use complete months only.
How does August in Elgin 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; Elgin's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.