December Weather in Norwalk

Last updated: March 2, 2024

The weather in Norwalk, United States, during December is characterized by an average temperature of 3°C (39°F). Highs can soar to 15°C (59°F), while lows may dip to -7°C (20°F). Typically, the humidity level in Norwalk throughout December hovers around 80%.

-7°C (20°F)

Minimum temperature

3°C (39°F)

Average temperature

15°C (59°F)

Maximum temperature

80%

Humidity

Precipitation and Sunshine hours

In December, Norwalk averages 113 mm (4.5 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 9 hours 16 minutes of daylight, with the sun shining for approximately 5 hours 36 minutes each day. Additionally, there is a 31% probability of sunny days during this period.

113 mm (4.5 inches)

Precipitation

11 rainy days

Rainy days

5 hours 36 minutes

Sunshine hours

31%

Chance of sun

UV Index

In December, the UV Index in Norwalk reaches a maximum of 2, indicating a level of Low exposure. The most intense UV radiation typically occurs between 10:00 and 12:00, during which unprotected skin may burn in as little as 45 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	0	1	1	2	2	2	2	1	1	1	0	0	0
Exposure	Low
Time to burn	45 min