Lancaster weather in August: Lancaster, Pennsylvania: normal highs, lows, rain and records for August
Lancaster in August has a normal high of 85°F and a normal low of 63°F, a daily mean of 74°F, falling from 86°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 12 days in a normal August, 3.52 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 17°C, 89 mm of precipitation in August.
- NOAA stationLancaster Airport
- Station IDUSW00054737
- Location40.12°N 76.29°W
- Elevation403 ft (123 m)
- From the center5 miles
- Population58,441
- Jan 40° 22°
- Feb 42° 23°
- Mar 52° 31°
- Apr 64° 40°
- May 74° 50°
- Jun 82° 60°
- Jul 86° 65°
- Aug 85° 63°
- Sep 78° 56°
- Oct 66° 44°
- Nov 54° 34°
- Dec 44° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lancaster in August?
The normal high is 85°F and the normal low 63°F, for a daily mean of 73.5°F. August is 1.9°F cooler than July and 6.9°F warmer than September. August is the 2nd warmest month of the year in Lancaster and the 5th wettest. Across the month the normal high falls 3°F, from 86°F on August 1 to 83°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 76°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 39%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 86°F | 64°F | 38% | 22% |
| August 8 | 85°F | 64°F | 39% | 22% |
| August 15 | 85°F | 63°F | 39% | 21% |
| August 22 | 84°F | 62°F | 39% | 20% |
| August 31 | 83°F | 60°F | 37% | 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 | 86°F | 64°F | 38% | 22% | 14 h 20 min |
| August 2 | 86°F | 64°F | 38% | 22% | 14 h 20 min |
| August 3 | 86°F | 64°F | 38% | 22% | 14 h 10 min |
| August 4 | 86°F | 64°F | 38% | 22% | 14 h 10 min |
| August 5 | 86°F | 64°F | 39% | 22% | 14 h 10 min |
| August 6 | 86°F | 64°F | 39% | 22% | 14 h 10 min |
| August 7 | 85°F | 64°F | 39% | 22% | 14 h 10 min |
| August 8 | 85°F | 64°F | 39% | 22% | 14 h |
| August 9 | 85°F | 64°F | 39% | 22% | 14 h |
| August 10 | 85°F | 63°F | 39% | 22% | 14 h |
| August 11 | 85°F | 63°F | 39% | 21% | 14 h |
| August 12 | 85°F | 63°F | 39% | 21% | 14 h |
| August 13 | 85°F | 63°F | 39% | 21% | 13 h 50 min |
| August 14 | 85°F | 63°F | 39% | 21% | 13 h 50 min |
| August 15 | 85°F | 63°F | 39% | 21% | 13 h 50 min |
| August 16 | 85°F | 63°F | 39% | 21% | 13 h 50 min |
| August 17 | 85°F | 63°F | 39% | 21% | 13 h 40 min |
| August 18 | 85°F | 62°F | 39% | 21% | 13 h 40 min |
| August 19 | 85°F | 62°F | 39% | 21% | 13 h 40 min |
| August 20 | 84°F | 62°F | 39% | 21% | 13 h 40 min |
| August 21 | 84°F | 62°F | 39% | 21% | 13 h 30 min |
| August 22 | 84°F | 62°F | 39% | 20% | 13 h 30 min |
| August 23 | 84°F | 62°F | 38% | 20% | 13 h 30 min |
| August 24 | 84°F | 62°F | 38% | 20% | 13 h 30 min |
| August 25 | 84°F | 61°F | 38% | 20% | 13 h 20 min |
| August 26 | 84°F | 61°F | 38% | 20% | 13 h 20 min |
| August 27 | 84°F | 61°F | 38% | 20% | 13 h 20 min |
| August 28 | 83°F | 61°F | 37% | 20% | 13 h 20 min |
| August 29 | 83°F | 61°F | 37% | 20% | 13 h 10 min |
| August 30 | 83°F | 60°F | 37% | 20% | 13 h 10 min |
| August 31 | 83°F | 60°F | 37% | 20% | 13 h 10 min |
- Normal high
- 85°FAugust average
- Normal low
- 63°FAugust average
- Precipitation
- 3.52 inmonth total
- Days with precipitation
- 120.01 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
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00054737; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lancaster in August?
On a given August day the chance of 0.01 inch or more is 38% on average, highest around August 11 (39%). In all, 3.52 in falls on 12 days of a normal August, 1 of them with an inch or more.
In a normal August in Lancaster, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00054737.
What are the records for August in Lancaster?
The warmest August temperature on this station's record (since 1999) is 100°F, on August 23, 2012; the coldest is 46°F, on August 21, 2000. The wettest August brought 11.24 in (2018).
The August mean against the 1991-2020 normal of 73.5°F: 2021 77.0°F (+3.5), 2022 78.3°F (+4.8), 2023 75.3°F (+1.8), 2024 73.2°F (−0.3), 2025 70.7°F (−2.8), 2026 73.7°F (+0.2). 4 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 77.0°F | +3.5°F | 7.84 in |
| 2022 | 78.3°F | +4.8°F | 1.41 in |
| 2023 | 75.3°F | +1.8°F | 1.17 in |
| 2024 | 73.2°F | −0.3°F | 5.98 in |
| 2025 | 70.7°F | −2.8°F | – |
| 2026 | 73.7°F | +0.2°F | 7.70 in |
Source: records: ACIS, station USW00054737; recent months: ACIS, station USW00054737. Records and recent months use complete months only.
How does August in Lancaster 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; Lancaster's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Lancaster in July86°F by day, 65°F at night
- Lancaster in September78°F by day, 56°F at night
- Lancaster 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