March Weather in Alton

Last updated: March 2, 2024

The weather in Alton, United States, during March is characterized by an average temperature of 10°C (50°F). Highs can soar to 26°C (79°F), while lows may dip to -5°C (23°F). Typically, the humidity level in Alton throughout March hovers around 80%.

-5°C (23°F)

Minimum temperature

10°C (50°F)

Average temperature

26°C (79°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In March, Alton averages 148 mm (5.8 inches) of rainfall, typically over the course of 14 rainy days. The month enjoys an average of 11 hours 59 minutes of daylight, with the sun shining for approximately 6 hours 44 minutes each day. Additionally, there is a 48% probability of sunny days during this period.

148 mm (5.8 inches)

Precipitation

14 rainy days

Rainy days

6 hours 44 minutes

Sunshine hours

48%

Chance of sun

UV Index

In March, the UV Index in Alton reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 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 1 3 4 6 7 7 7 5 4 2 1 1
Exposure Low Moderate High Moderate Low
Time to burn 45 min 30 min 25 min 30 min 45 min

Compare Alton's Climate with Cities Worldwide