Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Transitioning from December to January, Eureka observes an average high-temperature of a still subzero cold 27.3°F (-2.6°C), differing subtly from the previous month. Throughout January, Eureka's nights cool down to an average of 14.2°F (-9.9°C).Humidity
The most humid month is January, with an average relative humidity of 95%.Rainfall
In Eureka, during January, the rain falls for 8.3 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Eureka, during the entire year, the rain falls for 136.3 days and collects up to 15.35" (390mm) of precipitation.Snowfall
Months with snowfall in Eureka are January through May, September through December. In Eureka, during January, snow falls for 21.2 days and regularly aggregates up to 9.37" (238mm) of snow. Throughout the year, there are 110.7 snowfall days, and 46.81" (1189mm) of snow is accumulated.Daylight
In Eureka, the average length of the day in January is 8h and 48min.On the first day of the month, sunrise is at 8:33 am and sunset at 4:53 pm. On the last day of January, sunrise is at 8:11 am and sunset at 5:35 pm MST.
Sunshine
With an average of 3.1h of sunshine, January has the least sunshine of the year.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 1 in January translates into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Frequently asked questions
How cold is January in Eureka?
What is the most humid month in Eureka?
What is the average humidity in January in Eureka?
How many days does it rain in January in Eureka?
How many days does it snow in January in Eureka?
What is the average length of the day in January in Eureka?
When is the sunrise / sunset in January in Eureka?
What is the month with the least sunshine in Eureka?
How long on average sun shines in January in Eureka?
What are the months with the lowest UV index in Eureka?
What is the UV index intensity in January in Eureka?
Average temperature in January
Eureka, MT
- Average high temperature in January: 27.3°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (25.5°F).
- Average low temperature in January: 14.2°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in January
Eureka, MT
- Average pressure in January: 30.17"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in January
Eureka, MT
- Average wind speed in January: 3.5mph
The windiest month (with the highest average wind speed) is June (4.4mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).
Average humidity in January
Eureka, MT
- Average humidity in January: 95%
The month with the highest relative humidity is January (95%).
The month with the lowest relative humidity is August (55%).
Average rainfall in January
Eureka, MT
- Average rainfall in January: 1.46"
The wettest month (with the highest rainfall) is March (1.85").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days in January
Eureka, MT
- Average rainfall days in January: 8.3 days
The month with the highest number of rainy days is April (17 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in January
Eureka, MT
- Average snowfall in January: 9.37"
The month with the highest snowfall is February (10").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Eureka, MT
- Average snowfall days in January: 21.2 days
The month with the highest number of snowfall days is December (22.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Eureka, MT
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in January: 3h and 1min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 6min).
Average sunshine days in January
Eureka, MT
- Average sunshine days in January: 9 days
The month with the most sunshine days is August (21.6 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in January
Eureka, MT
- Average UV index in January: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in January
Eureka, MT
- Average cloud cover in January: 70
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in January
Eureka, MT
- Average visibility in January: 2mi
The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).
Eureka, Montana, USA
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