Jamestown, Newport Weather
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Climate of Jamestown: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), August is usually the hottest month in Jamestown, with average daytime highs around 26°C. January is the coolest, when nights typically fall to about -3°C and frost is possible on the coldest nights.
The area receives about 1160 mm of rain in a typical year. Most of it falls from March to April, June, October and December, and October is the wettest month at roughly 119 mm.
For outdoor plans and travel, July to September usually offer the most comfortable weather in Jamestown, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 3° | -3° | 82 mm | 84% |
| Feb | 4° | -3° | 81 mm | 83% |
| Mar | 6° | -1° | 108 mm | 81% |
| Apr | 12° | 4° | 105 mm | 81% |
| May | 17° | 9° | 87 mm | 81% |
| Jun | 22° | 15° | 101 mm | 82% |
| Jul | 26° | 19° | 86 mm | 80% |
| Aug | 26° | 19° | 83 mm | 78% |
| Sep | 23° | 16° | 99 mm | 78% |
| Oct | 17° | 10° | 119 mm | 79% |
| Nov | 12° | 5° | 97 mm | 80% |
| Dec | 6° | 0° | 113 mm | 83% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Jamestown. Values describe typical conditions, not a forecast.
About Jamestown weather
Jamestown is a place in Rhode Island's humid continental, coastal New England climate, located about 38 km south of Providence. Jamestown gets warm, humid summers (June–August) each year. Jamestown closes out the year with cold winters (December–February) with coastal storms and snow. This page shows live, auto-refreshing weather for Jamestown: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/New_York.
Frequently asked questions
Jamestown is about 38 km south of Providence, in Rhode Island.
Jamestown sees cold winters (December–February) with coastal storms and snow.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Jamestown's exact coordinates. No fixed schedule, the page updates whenever you load it.
August is usually the hottest month in Jamestown, with average daytime highs of about 26°C and nights around 19°C.
The coldest nights come in January, when the average low is about -3°C and daytime highs reach around 3°C. Frost is possible on clear, calm nights.
Jamestown receives about 1160 mm of rain in a typical year. October is the wettest month at roughly 119 mm, and the main rainy period is March to April, June, October and December.
July to September usually offer the most comfortable weather in Jamestown, with mild daytime temperatures and little rain.
In November Jamestown typically sees daytime highs near 12°C and lows near 5°C, with about 97 mm of rain over the month and average humidity around 80%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Jamestown updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Jamestown's day-to-day weather follows the broader pattern of Rhode Island described above. See the hourly weather forecast or the air quality index for more detail.