Jamestown weather in August: Jamestown, New York: normal highs, lows, rain and records for August
Jamestown in August has a normal high of 79°F and a normal low of 56°F, a daily mean of 68°F, falling from 80°F on the 1st to 78°F by the 31st. Measurable precipitation falls on 12 days in a normal August, 3.59 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 13°C, 91 mm of precipitation in August.
- NOAA stationJamestown (4 mi ENE)
- Station IDUSC00304207
- Location42.11°N 79.16°W
- Elevation1,250 ft (381 m)
- From the center4 miles
- Population27,699
- Jan 32° 16°
- Feb 35° 16°
- Mar 44° 23°
- Apr 57° 34°
- May 69° 44°
- Jun 77° 54°
- Jul 80° 57°
- Aug 79° 56°
- Sep 73° 50°
- Oct 61° 39°
- Nov 48° 31°
- Dec 37° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Jamestown in August?
The normal high is 79°F and the normal low 56°F, for a daily mean of 67.8°F. August is 1.0°F cooler than July and 6.6°F warmer than September. August is the 2nd warmest month of the year in Jamestown and the 10th wettest. Across the month the normal high falls 2°F, from 80°F on August 1 to 78°F on August 31. From one year to the next August's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 66°F and 70°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 41%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 80°F | 57°F | 41% | 26% |
| August 8 | 80°F | 57°F | 40% | 26% |
| August 15 | 80°F | 57°F | 38% | 25% |
| August 22 | 79°F | 56°F | 37% | 24% |
| August 31 | 78°F | 54°F | 35% | 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 | 80°F | 57°F | 41% | 26% | 14 h 30 min |
| August 2 | 80°F | 57°F | 41% | 26% | 14 h 30 min |
| August 3 | 80°F | 57°F | 41% | 26% | 14 h 20 min |
| August 4 | 80°F | 57°F | 40% | 26% | 14 h 20 min |
| August 5 | 80°F | 57°F | 40% | 26% | 14 h 20 min |
| August 6 | 80°F | 57°F | 40% | 26% | 14 h 20 min |
| August 7 | 80°F | 57°F | 40% | 26% | 14 h 20 min |
| August 8 | 80°F | 57°F | 40% | 26% | 14 h 10 min |
| August 9 | 80°F | 57°F | 40% | 26% | 14 h 10 min |
| August 10 | 80°F | 57°F | 39% | 25% | 14 h 10 min |
| August 11 | 80°F | 57°F | 39% | 25% | 14 h 10 min |
| August 12 | 80°F | 57°F | 39% | 25% | 14 h |
| August 13 | 80°F | 57°F | 39% | 25% | 14 h |
| August 14 | 80°F | 57°F | 39% | 25% | 14 h |
| August 15 | 80°F | 57°F | 38% | 25% | 14 h |
| August 16 | 80°F | 56°F | 38% | 25% | 13 h 50 min |
| August 17 | 80°F | 56°F | 38% | 24% | 13 h 50 min |
| August 18 | 80°F | 56°F | 38% | 24% | 13 h 50 min |
| August 19 | 79°F | 56°F | 37% | 24% | 13 h 50 min |
| August 20 | 79°F | 56°F | 37% | 24% | 13 h 40 min |
| August 21 | 79°F | 56°F | 37% | 24% | 13 h 40 min |
| August 22 | 79°F | 56°F | 37% | 24% | 13 h 40 min |
| August 23 | 79°F | 56°F | 36% | 24% | 13 h 40 min |
| August 24 | 79°F | 55°F | 36% | 24% | 13 h 30 min |
| August 25 | 79°F | 55°F | 36% | 24% | 13 h 30 min |
| August 26 | 79°F | 55°F | 36% | 24% | 13 h 30 min |
| August 27 | 79°F | 55°F | 36% | 24% | 13 h 30 min |
| August 28 | 78°F | 55°F | 36% | 24% | 13 h 20 min |
| August 29 | 78°F | 54°F | 35% | 24% | 13 h 20 min |
| August 30 | 78°F | 54°F | 35% | 24% | 13 h 20 min |
| August 31 | 78°F | 54°F | 35% | 24% | 13 h 10 min |
- Normal high
- 79°FAugust average
- Normal low
- 56°FAugust average
- Precipitation
- 3.59 inmonth total
- Days with precipitation
- 120.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 14 h 30 min to 13 h 10 minAugust 1 to August 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 15
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00304207; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Jamestown in August?
On a given August day the chance of 0.01 inch or more is 38% on average, highest around August 1 (41%). In all, 3.59 in falls on 12 days of a normal August, 1 of them with an inch or more.
In a normal August in Jamestown, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00304207.
What are the records for August in Jamestown?
The warmest August temperature on Jamestown's official record (since 1895) is 99°F, on August 1, 1917; the coldest is 30°F, on August 30, 1982. The wettest August brought 9.28 in (1975).
The August mean against the 1991-2020 normal of 67.8°F: 2021 72.2°F (+4.4), 2022 69.0°F (+1.2), 2023 67.6°F (−0.2), 2024 68.7°F (+0.9), 2025 66.8°F (−1.0), 2026 67.6°F (−0.2). 3 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.2°F | +4.4°F | 6.16 in |
| 2022 | 69.0°F | +1.2°F | 3.32 in |
| 2023 | 67.6°F | −0.2°F | 3.42 in |
| 2024 | 68.7°F | +0.9°F | 2.70 in |
| 2025 | 66.8°F | −1.0°F | 1.79 in |
| 2026 | 67.6°F | −0.2°F | 4.14 in |
Source: records: ACIS, NWS threaded record JSTN6thr; recent months: ACIS, station USC00304207. Records and recent months use complete months only.
How does August in Jamestown compare across New York?
Across the 131 places PlainClimate covers in New York, August normal highs run from 71°F in Cooperstown to 85°F in Mineola; Jamestown's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.