Chambersburg weather in August: Chambersburg, Pennsylvania: normal highs, lows, rain and records for August
Chambersburg in August has a normal high of 83°F and a normal low of 63°F, a daily mean of 73°F, falling from 84°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.82 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 17°C, 97 mm of precipitation in August.
- NOAA stationChambersburg (1 mi ESE)
- Station IDUSC00361354
- Location39.94°N 77.64°W
- Elevation640 ft (195 m)
- Population23,041
- Jan 37° 23°
- Feb 41° 25°
- Mar 50° 32°
- Apr 63° 42°
- May 73° 52°
- Jun 81° 61°
- Jul 85° 65°
- Aug 83° 63°
- Sep 76° 56°
- Oct 64° 45°
- Nov 52° 35°
- Dec 41° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Chambersburg in August?
The normal high is 83°F and the normal low 63°F, for a daily mean of 72.9°F. August is 1.9°F cooler than July and 7.2°F warmer than September. August is the 2nd warmest month of the year in Chambersburg and the 6th wettest. Across the month the normal high falls 3°F, from 84°F on August 1 to 81°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 71°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 32%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 84°F | 65°F | 32% | 23% |
| August 8 | 84°F | 64°F | 31% | 23% |
| August 15 | 83°F | 63°F | 30% | 22% |
| August 22 | 82°F | 62°F | 29% | 21% |
| August 31 | 81°F | 61°F | 28% | 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 | 65°F | 32% | 23% | 14 h 20 min |
| August 2 | 84°F | 65°F | 32% | 23% | 14 h 20 min |
| August 3 | 84°F | 65°F | 32% | 23% | 14 h 10 min |
| August 4 | 84°F | 64°F | 32% | 23% | 14 h 10 min |
| August 5 | 84°F | 64°F | 32% | 23% | 14 h 10 min |
| August 6 | 84°F | 64°F | 32% | 23% | 14 h 10 min |
| August 7 | 84°F | 64°F | 31% | 23% | 14 h 10 min |
| August 8 | 84°F | 64°F | 31% | 23% | 14 h |
| August 9 | 84°F | 64°F | 31% | 23% | 14 h |
| August 10 | 84°F | 64°F | 31% | 22% | 14 h |
| August 11 | 84°F | 64°F | 31% | 22% | 14 h |
| August 12 | 84°F | 64°F | 31% | 22% | 13 h 50 min |
| August 13 | 83°F | 64°F | 31% | 22% | 13 h 50 min |
| August 14 | 83°F | 64°F | 30% | 22% | 13 h 50 min |
| August 15 | 83°F | 63°F | 30% | 22% | 13 h 50 min |
| August 16 | 83°F | 63°F | 30% | 22% | 13 h 50 min |
| August 17 | 83°F | 63°F | 30% | 22% | 13 h 40 min |
| August 18 | 83°F | 63°F | 30% | 21% | 13 h 40 min |
| August 19 | 83°F | 63°F | 30% | 21% | 13 h 40 min |
| August 20 | 83°F | 63°F | 29% | 21% | 13 h 40 min |
| August 21 | 83°F | 63°F | 29% | 21% | 13 h 30 min |
| August 22 | 82°F | 62°F | 29% | 21% | 13 h 30 min |
| August 23 | 82°F | 62°F | 29% | 21% | 13 h 30 min |
| August 24 | 82°F | 62°F | 28% | 20% | 13 h 30 min |
| August 25 | 82°F | 62°F | 28% | 20% | 13 h 20 min |
| August 26 | 82°F | 62°F | 28% | 20% | 13 h 20 min |
| August 27 | 82°F | 61°F | 28% | 20% | 13 h 20 min |
| August 28 | 81°F | 61°F | 28% | 20% | 13 h 20 min |
| August 29 | 81°F | 61°F | 28% | 20% | 13 h 10 min |
| August 30 | 81°F | 61°F | 28% | 20% | 13 h 10 min |
| August 31 | 81°F | 61°F | 28% | 20% | 13 h 10 min |
- Normal high
- 83°FAugust average
- Normal low
- 63°FAugust average
- Precipitation
- 3.82 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 5
- 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
- 24
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00361354; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Chambersburg in August?
On a given August day the chance of 0.01 inch or more is 30% on average, highest around August 1 (32%). In all, 3.82 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Chambersburg, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00361354.
What are the records for August in Chambersburg?
The warmest August temperature on this station's record (since 1894) is 105°F, on August 4, 1930; the coldest is 37°F, on August 29, 1986. The wettest August brought 8.63 in (1933).
The August mean against the 1991-2020 normal of 72.9°F: 2022 76.3°F (+3.4), 2023 74.4°F (+1.5), 2024 74.0°F (+1.1). 3 of 3 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 76.3°F | +3.4°F | 3.38 in |
| 2023 | 74.4°F | +1.5°F | 2.63 in |
| 2024 | 74.0°F | +1.1°F | 4.68 in |
Source: records: ACIS, station USC00361354; recent months: ACIS, station USC00361354. Records and recent months use complete months only.
How does August in Chambersburg 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; Chambersburg's is 83°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Chambersburg in July85°F by day, 65°F at night
- Chambersburg in September76°F by day, 56°F at night
- Chambersburg through the yearEvery month, frost dates, records and recent years
- Pennsylvania in AugustThe statewide normal and the warmest and coolest places
- Marcus Hook: Pennsylvania's warmest Augustnormal high 87°F