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
Grand Junction's January weather reaches an average high of 26.8°F (-2.9°C) and an average low of 13.5°F (-10.3°C), making it the coldest month.Humidity
With an average relative humidity of 84%, January is the most humid month in Grand Junction, Iowa.Rainfall
January is the month with the least rainfall in Grand Junction. Rain falls for 3.8 days and accumulates 0.87" (22mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is January, when snow falls for 9.8 days and typically aggregates up to 4.29" (109mm) of snow.Daylight
The average length of the day in January is 9h and 32min.On the first day of January, sunrise is at 7:44 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:29 pm CST.
Sunshine
January has the least sunshine of the year in Grand Junction, Iowa, with an average of 4.2h of sunshine.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 during January translates into the following guidance:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What is the coldest time of year in Grand Junction?
How cold is it in Grand Junction in January?
What is the most humid month in Grand Junction?
What is the average humidity in January in Grand Junction?
What is the driest month in Grand Junction?
How much does it rain in Grand Junction in January?
What is the snowiest month in Grand Junction?
How much does it snow in Grand Junction in January?
How many hours of daylight does Grand Junction have in January?
When are sunrise and sunset in January in Grand Junction?
What is the month with the least sunshine in Grand Junction?
How many hours of sunshine does Grand Junction have in January?
What is the month with the lowest UV index in Grand Junction?
What is the UV index reading in January in Grand Junction?
Average temperature in January
Grand Junction, IA
- Average high temperature in January: 26.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in January: 13.5°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure in January
Grand Junction, IA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Grand Junction, IA
- Average wind speed in January: 10.6mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity in January
Grand Junction, IA
- Average humidity in January: 84%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in January
Grand Junction, IA
- Average rainfall in January: 0.87"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in January
Grand Junction, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in January
Grand Junction, IA
- Average snowfall in January: 4.29"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Grand Junction, IA
- Average snowfall days in January: 9.8 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Grand Junction, IA
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in January
Grand Junction, IA
- Average sunshine days in January: 18.1 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in January
Grand Junction, 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
Grand Junction, 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 July and September (Cloud cover 30).
Average visibility in January
Grand Junction, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Grand Junction, Iowa, USA
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