St. John Island weather, town by town
2 places in St. John Island, US Virgin Islands, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1953 to 2025. Station extremes, not official state records.
St. John Island Weather Facts
St. John Island has 2 places on myweatherrock (2 census-designated places), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 99°F at Cyril E King Ap on August 8, 1979. The coldest night is 60°F at Cyril E King Ap on March 1, 1972. The wettest day brought 11 inches of rain at E End on September 6, 2017. The biggest single-day snow measured 0 inches at Cyril E King Ap on January 1, 1953. Those are station measurements from NOAA's daily records, 1953 to 2025, not official state records. By area the largest place is Cruz Bay, about 3 square miles.
About St. John Island weather
The map on the Now tab shows every St. John Island town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 2 St. John Island towns with station normals, the warmest month is July, when the day usually reaches 90°F, and the coldest is January, when the night usually falls to 73°F. November is the wettest, with rain on about 18 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
St. John Island weather records
Measured at the NOAA stations serving these towns, daily records 1953 to 2025. Station extremes, not official state records.
Common questions about St. John Island weather
- What is the hottest temperature recorded at a St. John Island station?
- 99°F at Cyril E King Ap on August 8, 1979, in the NOAA daily station records myweatherrock holds (1953 to 2025).
- What is the coldest temperature recorded at a St. John Island station?
- 60°F at Cyril E King Ap on March 1, 1972.
- What is the most rain a St. John Island station has measured in one day?
- 11 inches at E End on September 6, 2017.
- What is the biggest one-day snowfall at a St. John Island station?
- 0 inches at Cyril E King Ap on January 1, 1953.
- How many St. John Island towns have a weather page here?
- 2: 2 census-designated places. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the St. John Island forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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