Indiana weather in August: Indiana, Pennsylvania: normal highs, lows, rain and records for August
Indiana in August has a normal high of 81°F and a normal low of 58°F, a daily mean of 69°F, falling from 82°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 12 days in a normal August, 4.26 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 14°C, 108 mm of precipitation in August.
- NOAA stationIndiana (3 mi SE)
- Station IDUSC00364214
- Location40.60°N 79.12°W
- Elevation1,102 ft (336 m)
- From the center3 miles
- Population14,294
- Jan 36° 18°
- Feb 39° 18°
- Mar 49° 25°
- Apr 62° 35°
- May 72° 46°
- Jun 79° 54°
- Jul 83° 59°
- Aug 81° 58°
- Sep 75° 51°
- Oct 63° 40°
- Nov 51° 30°
- Dec 41° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Indiana in August?
The normal high is 81°F and the normal low 58°F, for a daily mean of 69.4°F. August is 1.3°F cooler than July and 6.4°F warmer than September. August is the 2nd warmest month of the year in Indiana and the 4th wettest. Across the month the normal high falls 3°F, from 82°F on August 1 to 79°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 67°F and 72°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 43%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 59°F | 43% | 28% |
| August 8 | 82°F | 59°F | 41% | 27% |
| August 15 | 81°F | 58°F | 40% | 26% |
| August 22 | 81°F | 57°F | 39% | 25% |
| August 31 | 79°F | 55°F | 38% | 24% |
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 | 82°F | 59°F | 43% | 28% | 14 h 20 min |
| August 2 | 82°F | 59°F | 42% | 28% | 14 h 20 min |
| August 3 | 82°F | 59°F | 42% | 27% | 14 h 20 min |
| August 4 | 82°F | 59°F | 42% | 27% | 14 h 10 min |
| August 5 | 82°F | 59°F | 42% | 27% | 14 h 10 min |
| August 6 | 82°F | 59°F | 42% | 27% | 14 h 10 min |
| August 7 | 82°F | 59°F | 41% | 27% | 14 h 10 min |
| August 8 | 82°F | 59°F | 41% | 27% | 14 h 10 min |
| August 9 | 82°F | 59°F | 41% | 26% | 14 h |
| August 10 | 82°F | 59°F | 41% | 26% | 14 h |
| August 11 | 82°F | 59°F | 41% | 26% | 14 h |
| August 12 | 82°F | 58°F | 41% | 26% | 14 h |
| August 13 | 82°F | 58°F | 40% | 26% | 13 h 50 min |
| August 14 | 81°F | 58°F | 40% | 26% | 13 h 50 min |
| August 15 | 81°F | 58°F | 40% | 26% | 13 h 50 min |
| August 16 | 81°F | 58°F | 40% | 26% | 13 h 50 min |
| August 17 | 81°F | 58°F | 40% | 25% | 13 h 50 min |
| August 18 | 81°F | 58°F | 40% | 25% | 13 h 40 min |
| August 19 | 81°F | 58°F | 39% | 25% | 13 h 40 min |
| August 20 | 81°F | 57°F | 39% | 25% | 13 h 40 min |
| August 21 | 81°F | 57°F | 39% | 25% | 13 h 40 min |
| August 22 | 81°F | 57°F | 39% | 25% | 13 h 30 min |
| August 23 | 81°F | 57°F | 39% | 25% | 13 h 30 min |
| August 24 | 81°F | 57°F | 38% | 25% | 13 h 30 min |
| August 25 | 80°F | 57°F | 38% | 25% | 13 h 30 min |
| August 26 | 80°F | 56°F | 38% | 24% | 13 h 20 min |
| August 27 | 80°F | 56°F | 38% | 24% | 13 h 20 min |
| August 28 | 80°F | 56°F | 38% | 24% | 13 h 20 min |
| August 29 | 80°F | 56°F | 38% | 24% | 13 h 20 min |
| August 30 | 80°F | 56°F | 38% | 24% | 13 h 10 min |
| August 31 | 79°F | 55°F | 38% | 24% | 13 h 10 min |
- Normal high
- 81°FAugust average
- Normal low
- 58°FAugust average
- Precipitation
- 4.26 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 2
- Daylight
- 14 h 20 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
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00364214; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Indiana in August?
On a given August day the chance of 0.01 inch or more is 40% on average, highest around August 1 (43%). In all, 4.26 in falls on 12 days of a normal August, 1 of them with an inch or more.
In a normal August in Indiana, 2 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00364214.
What are the records for August in Indiana?
The warmest August temperature on this station's record (since 1946) is 99°F, on August 17, 1988; the coldest is 34°F, on August 29, 1965. The wettest August brought 8.49 in (2007).
The August mean against the 1991-2020 normal of 69.4°F: 2021 72.2°F (+2.8), 2022 70.0°F (+0.6), 2023 68.0°F (−1.4), 2024 68.9°F (−0.5), 2025 68.0°F (−1.4), 2026 69.1°F (−0.3). 2 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.2°F | +2.8°F | 5.88 in |
| 2022 | 70.0°F | +0.6°F | 6.18 in |
| 2023 | 68.0°F | −1.4°F | 5.97 in |
| 2024 | 68.9°F | −0.5°F | 6.96 in |
| 2025 | 68.0°F | −1.4°F | 2.19 in |
| 2026 | 69.1°F | −0.3°F | 6.93 in |
Source: records: ACIS, station USC00364214; recent months: ACIS, station USC00364214. Records and recent months use complete months only.
How does August in Indiana compare across Pennsylvania?
Across the 108 places PlainClimate covers in Pennsylvania, August normal highs run from 75°F in Laporte to 87°F in Marcus Hook; Indiana's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.