April Weather in Helena

Last updated: March 2, 2024

The weather in Helena, United States, during April is characterized by an average temperature of 20°C (68°F). Highs can soar to 29°C (84°F), while lows may dip to 7°C (44°F). Typically, the humidity level in Helena throughout April hovers around 78%.

7°C (44°F)

Minimum temperature

20°C (68°F)

Average temperature

29°C (84°F)

Maximum temperature

78%

Humidity

Precipitation and Sunshine hours

In April, Helena averages 120 mm (4.7 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 12 hours 55 minutes of daylight, with the sun shining for approximately 9 hours 45 minutes each day. Additionally, there is a 51% probability of sunny days during this period.

120 mm (4.7 inches)

Precipitation

10 rainy days

Rainy days

9 hours 45 minutes

Sunshine hours

51%

Chance of sun

UV Index

In April, the UV Index in Helena reaches a maximum of 11, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 10 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 9 10 11 9 7 5 2 1 1
Exposure Low Moderate High VeryHigh Extreme VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 10 min 15 min 25 min 30 min 45 min

Compare Helena's Climate with Cities Worldwide