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
Grain Valley's coldest temperatures are experienced in January, with average high temperatures of 37°F (2.8°C) and lows of 22.8°F (-5.1°C).Humidity
The average relative humidity in January is 74%.Rainfall
January is the month with the least rainfall. Rain falls for 5.2 days and accumulates 1.06" (27mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Grain Valley, in January, during 5.5 snowfall days, 2.99" (76mm) of snow is typically accumulated. In Grain Valley, during the entire year, snow falls for 20.9 days and aggregates up to 10.67" (271mm) of snow.Daylight
The average length of the day in January is 9h and 48min.On the first day of January, sunrise is at 7:35 am and sunset at 5:04 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:36 pm CST.
Sunshine
With an average of 5h 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 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during January, leads to the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. 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
What time of the year is the coldest?
How cold is January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
What is the month with the least sunshine?
How long on average sun shines in January in Grain Valley?
What are the months with the lowest UV index?
What is the UV index intensity in January?
Average temperature in January
Grain Valley, MO
- Average high temperature in January: 37°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in January: 22.8°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in January
Grain Valley, MO
- 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 (29.89"Hg).
Average wind speed in January
Grain Valley, MO
- Average wind speed in January: 9.8mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in January
Grain Valley, MO
- Average humidity in January: 74%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in January
Grain Valley, MO
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in January
Grain Valley, MO
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Grain Valley, MO
- Average snowfall in January: 2.99"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Grain Valley, MO
- Average snowfall days in January: 5.5 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Grain Valley, MO
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in January
Grain Valley, MO
- Average sunshine days in January: 20.3 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in January
Grain Valley, MO
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Grain Valley, MO
- Average cloud cover in January: 45
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in January
Grain Valley, MO
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grain Valley, Missouri, USA
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