January weather forecastMartinsburg, IA
January
Weather in January
January, the same as December, in Martinsburg, Iowa, is another subzero cold winter month, with an average temperature ranging between max 28.6°F (-1.9°C) and min 15.6°F (-9.1°C).Temperature
The month of January, characterized by an average high of 28.6°F (-1.9°C) and a low of 15.6°F (-9.1°C), is recognized as the coldest.Humidity
In January, the average relative humidity in Martinsburg is 82%.Rainfall
In Martinsburg, in January, it is raining for 5.8 days, with typically 1.06" (27mm) of accumulated precipitation. In Martinsburg, during the entire year, the rain falls for 137.9 days and collects up to 27.76" (705mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall in Martinsburg is January, when snow falls for 9.5 days and typically aggregates up to 4.06" (103mm) of snow.Daylight
In January, the average length of the day in Martinsburg is 9h and 37min.On the first day of the month, sunrise is at 7:34 am and sunset at 4:50 pm. On the last day of January, in Martinsburg, sunrise is at 7:20 am and sunset at 5:23 pm CST.
Sunshine
With an average of 4.2h of sunshine, January has the least sunshine of the year in Martinsburg.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 2 during January leads to these instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Martinsburg, IA
- Average high temperature in January: 28.6°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in January: 15.6°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in January
Martinsburg, IA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Martinsburg, IA
- Average wind speed in January: 10.7mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in January
Martinsburg, IA
- Average humidity in January: 82%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall in January
Martinsburg, IA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in January
Martinsburg, IA
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in January
Martinsburg, IA
- Average snowfall in January: 4.06"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Martinsburg, IA
- Average snowfall days in January: 9.5 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Martinsburg, IA
- Average daylight in January: 9h and 36min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in January
Martinsburg, IA
- Average sunshine days in January: 16.6 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in January
Martinsburg, IA
- Average UV index in January: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in January
Martinsburg, IA
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility in January
Martinsburg, IA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
