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February Weather in St Johnsbury, United States

Last updated: June 24, 2025

In February, the average temperature in St Johnsbury, United States hovers around -6°C (21°F). This month brings extremes, with minimum temperatures plummeting to -29°C (-20°F) and maximums reaching a surprising 18°C (65°F). Expect approximately 78 mm (3.1 in) of precipitation over 13 days, contributing to an average humidity level of 89%.

February Temperature in St Johnsbury

In February in St Johnsbury, the average temperature is -6°C (21°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -29°C (-20°F). Travelers should prepare for a wide range of temperatures and pack accordingly for both cold and mild weather.

February Weather in St Johnsbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in St Johnsbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Johnsbury, February typically has an average temperature of -6°C (21°F), with highs reaching up to 18°C (65°F) and lows dropping to around -29°C (-20°F).
JanFebMarAprMayJunJulAugSepOctNovDec182128425463686659483323
Data source: Temperature data for St Johnsbury generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

February Precipitation in St Johnsbury

In St Johnsbury in February, the precipitation amount is 78 mm (3.1 in) spread over 13 days.

February Precipitation Trends in St Johnsbury

The chart displays monthly precipitation patterns in St Johnsbury, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In St Johnsbury, February typically receives around 78 mm (3.1 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8078691109598106886413910385
Data source: Precipitation data for February generated using information from the Copernicus Climate Change Service.
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February Humidity in St Johnsbury

In St Johnsbury in February, humidity is 89%. With an average temperature of -6°C (21°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling outdoors an arduous task as the cold air mixes with dampness, often leaving you feeling cold and clammy despite layers of clothing.

February Average Humidity in St Johnsbury

This chart illustrates the average monthly humidity levels in St Johnsbury, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in St Johnsbury is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in St Johnsbury

In St Johnsbury in February, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in St Johnsbury for better planning.

Maximum UV Index Levels in St Johnsbury for February

The chart shows the monthly maximum UV Index (UVI) for St Johnsbury in February, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In February, the maximum UV index in St Johnsbury typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: St Johnsbury February UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How February Weather in St Johnsbury Compares to Other Months

Weather in St Johnsbury varies notably across the year, with each month offering distinct climate conditions. This page compares February’s weather to other months in St Johnsbury, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in St Johnsbury, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)80 mm (3.1 inches)91%low
February Weather-6°C (21°F)78 mm (3.1 inches)89%moderate
March Weather-2°C (29°F)69 mm (2.7 inches)85%moderate
April Weather5°C (42°F)110 mm (4.3 inches)84%very high
May Weather12°C (55°F)95 mm (3.7 inches)78%very high
June Weather17°C (63°F)98 mm (3.9 inches)72%very high
July Weather20°C (69°F)106 mm (4.2 inches)75%very high
August Weather19°C (67°F)88 mm (3.5 inches)74%very high
September Weather15°C (60°F)64 mm (2.5 inches)77%high
October Weather9°C (48°F)138 mm (5.5 inches)85%moderate
November Weather0°C (33°F)103 mm (4.0 inches)86%moderate
December Weather-5°C (23°F)85 mm (3.3 inches)85%low

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