May Weather in Saint Johnsbury

Last updated: March 2, 2024

The weather in Saint Johnsbury, United States, during May is characterized by an average temperature of 12°C (55°F). Highs can soar to 29°C (85°F), while lows may dip to 0°C (32°F). Typically, the humidity level in Saint Johnsbury throughout May hovers around 78%.

0°C (32°F)

Minimum temperature

12°C (55°F)

Average temperature

29°C (85°F)

Maximum temperature

78%

Humidity

Precipitation and Sunshine hours

In May, Saint Johnsbury averages 95 mm (3.7 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 14 hours 48 minutes of daylight, with the sun shining for approximately 8 hours 15 minutes each day. Additionally, there is a 32% probability of sunny days during this period.

95 mm (3.7 inches)

Precipitation

12 rainy days

Rainy days

8 hours 15 minutes

Sunshine hours

32%

Chance of sun

UV Index

In May, the UV Index in Saint Johnsbury reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 4 6 8 9 9 8 6 4 3 1 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

Compare Saint Johnsbury's Climate with Cities Worldwide