St. Johnsbury UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index2.8
- Avg Clouds33%
- Max Temp12.2 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in St. Johnsbury, United States 
will reach a high of 2.8 today. This means a low level of sun exposure. See our tips below to stay safe!
Last checked: 2025-10-28
Hourly Forecast Chart
Today's Safety Tips
The sun danger is low (0-2). You can enjoy the outdoors safely! On bright days, sunglasses are a good idea.
St. Johnsbury's UV Index
The UV index in St. Johnsbury is generally moderate to low, with values rising during summer months, often reaching around 5 to 7, and dropping to 1 to 2 in winter.
Weather Seasons
St. Johnsbury experiences cold, snowy winters and warm, humid summers. Spring and fall bring mild temperatures and moderate rainfall, with snow common from late November through March.
St. Johnsbury's Climate
Compared to other parts of the northeastern United States, St. Johnsbury is colder in winter due to its northern location and higher elevation. It has more snow than many southern areas but similar UV levels to nearby Vermont towns.
Hourly UV Index Trend
See the UV index hour by hour for St. Johnsbury. When the level is high, it's smart to find some shade.
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