Westerly weather in August: Westerly, Rhode Island: normal highs, lows, rain and records for August
Westerly in August has a normal high of 81°F and a normal low of 64°F, a daily mean of 72°F, falling from 82°F on the 1st to 79°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 3.49 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 18°C, 89 mm of precipitation in August.
- NOAA stationWesterly State Airport
- Station IDUSW00014794
- Location41.35°N 71.80°W
- Elevation81 ft (25 m)
- From the center2 miles
- Population (town)23,288
- Census place18,528
- Jan 40° 25°
- Feb 41° 26°
- Mar 47° 32°
- Apr 57° 41°
- May 67° 50°
- Jun 75° 59°
- Jul 82° 66°
- Aug 81° 64°
- Sep 74° 57°
- Oct 64° 47°
- Nov 54° 38°
- Dec 45° 30°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Westerly in August?
The normal high is 81°F and the normal low 64°F, for a daily mean of 72.4°F. August is 1.4°F cooler than July and 6.7°F warmer than September. August is the 2nd warmest month of the year in Westerly and the 8th 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 2.0°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 70°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 31%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 66°F | 31% | 18% |
| August 8 | 81°F | 66°F | 31% | 18% |
| August 15 | 81°F | 65°F | 31% | 18% |
| August 22 | 80°F | 64°F | 30% | 17% |
| August 31 | 79°F | 62°F | 30% | 17% |
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 | 66°F | 31% | 18% | 14 h 20 min |
| August 2 | 82°F | 66°F | 31% | 18% | 14 h 20 min |
| August 3 | 82°F | 66°F | 31% | 18% | 14 h 20 min |
| August 4 | 82°F | 66°F | 31% | 18% | 14 h 20 min |
| August 5 | 82°F | 66°F | 31% | 18% | 14 h 20 min |
| August 6 | 82°F | 66°F | 31% | 18% | 14 h 10 min |
| August 7 | 81°F | 66°F | 31% | 18% | 14 h 10 min |
| August 8 | 81°F | 66°F | 31% | 18% | 14 h 10 min |
| August 9 | 81°F | 65°F | 31% | 18% | 14 h 10 min |
| August 10 | 81°F | 65°F | 31% | 18% | 14 h |
| August 11 | 81°F | 65°F | 31% | 18% | 14 h |
| August 12 | 81°F | 65°F | 31% | 18% | 14 h |
| August 13 | 81°F | 65°F | 31% | 18% | 14 h |
| August 14 | 81°F | 65°F | 31% | 18% | 14 h |
| August 15 | 81°F | 65°F | 31% | 18% | 13 h 50 min |
| August 16 | 81°F | 65°F | 31% | 18% | 13 h 50 min |
| August 17 | 81°F | 64°F | 31% | 17% | 13 h 50 min |
| August 18 | 80°F | 64°F | 31% | 17% | 13 h 50 min |
| August 19 | 80°F | 64°F | 31% | 17% | 13 h 40 min |
| August 20 | 80°F | 64°F | 30% | 17% | 13 h 40 min |
| August 21 | 80°F | 64°F | 30% | 17% | 13 h 40 min |
| August 22 | 80°F | 64°F | 30% | 17% | 13 h 40 min |
| August 23 | 80°F | 63°F | 30% | 17% | 13 h 30 min |
| August 24 | 80°F | 63°F | 30% | 17% | 13 h 30 min |
| August 25 | 80°F | 63°F | 30% | 17% | 13 h 30 min |
| August 26 | 79°F | 63°F | 30% | 17% | 13 h 30 min |
| August 27 | 79°F | 63°F | 30% | 17% | 13 h 20 min |
| August 28 | 79°F | 62°F | 30% | 17% | 13 h 20 min |
| August 29 | 79°F | 62°F | 30% | 17% | 13 h 20 min |
| August 30 | 79°F | 62°F | 30% | 17% | 13 h 20 min |
| August 31 | 79°F | 62°F | 30% | 17% | 13 h 10 min |
- Normal high
- 81°FAugust average
- Normal low
- 64°FAugust average
- Precipitation
- 3.49 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 1
- 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
- 17
- Sunshine
- 81%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014794; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Westerly in August?
On a given August day the chance of 0.01 inch or more is 31% on average, highest around August 1 (31%). In all, 3.49 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Westerly, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014794.
What are the records for August in Westerly?
The warmest August temperature on this station's record (since 1999) is 93°F, on August 30, 2018; the coldest is 47°F, on August 28, 2025. The wettest August brought 6.68 in (2011).
The August mean against the 1991-2020 normal of 72.4°F: 2021 71.2°F (−1.2), 2022 74.3°F (+1.9), 2023 70.3°F (−2.1), 2024 70.5°F (−1.9), 2025 68.4°F (−4.0), 2026 72.2°F (−0.3). 1 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.2°F | −1.2°F | 2.73 in |
| 2022 | 74.3°F | +1.9°F | 1.64 in |
| 2023 | 70.3°F | −2.1°F | 4.56 in |
| 2024 | 70.5°F | −1.9°F | 5.65 in |
| 2025 | 68.4°F | −4.0°F | – |
| 2026 | 72.2°F | −0.3°F | 4.39 in |
Source: records: ACIS, station USW00014794; recent months: ACIS, station USW00014794. Records and recent months use complete months only.
How does August in Westerly compare across Rhode Island?
Across the 6 places PlainClimate covers in Rhode Island, August normal highs run from 79°F in Newport to 84°F in Tiverton; Westerly's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.