January Weather in Gretna

Last updated: March 2, 2024

The weather in Gretna, United States, during January is characterized by an average temperature of -4°C (25°F). Highs can soar to 12°C (54°F), while lows may dip to -22°C (-8°F). Typically, the humidity level in Gretna throughout January hovers around 76%.

-22°C (-8°F)

Minimum temperature

-4°C (25°F)

Average temperature

12°C (54°F)

Maximum temperature

76%

Humidity

Precipitation and Sunshine hours

In January, Gretna averages 32 mm (1.3 inches) of rainfall, typically over the course of 5 rainy days. The month enjoys an average of 9 hours 34 minutes of daylight, with the sun shining for approximately 4 hours 56 minutes each day. Additionally, there is a 30% probability of sunny days during this period.

32 mm (1.3 inches)

Precipitation

5 rainy days

Rainy days

4 hours 56 minutes

Sunshine hours

30%

Chance of sun

UV Index

In January, the UV Index in Gretna reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 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	3	3	2	2	1	1	0	0
Exposure	Low					Moderate		Low
Time to burn	45 min					30 min		45 min