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
January, with average temperatures reaching a high of 35.2°F (1.8°C) and a low of 21.7°F (-5.7°C), is the coldest month.Humidity
In January, the average relative humidity in Jacksonville is 77%.Rainfall
The month with the least rainfall in Jacksonville is January, when the rain falls for 5.2 days and typically collects 1.18" (30mm) of precipitation.Snowfall
Months with snowfall are January through April, September through December. The month with the most snowfall in Jacksonville, Missouri, is January, when snow falls for 6.9 days and typically aggregates up to 3.7" (94mm) of snow.Daylight
In January, the average length of the day in Jacksonville is 9h and 45min.On the first day of the month, sunrise is at 7:30 am and sunset at 4:56 pm. On the last day of January, in Jacksonville, sunrise is at 7:18 am and sunset at 5:28 pm CST.
Sunshine
January has the least sunshine of the year in Jacksonville, with an average of 4.6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jacksonville. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: In January, a daily UV index of 2 turns into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Frequently asked questions
What is the coldest time of year in Jacksonville?
How cold is it in Jacksonville in January?
What is the average humidity in January in Jacksonville?
What is the driest month in Jacksonville?
How many days does it rain in January in Jacksonville?
When does it snow the most in Jacksonville?
How much does it snow in Jacksonville in January?
How many hours of daylight does Jacksonville have in January?
When are sunrise and sunset in January in Jacksonville?
What is the month with the least sunshine in Jacksonville?
How many hours of sunshine does Jacksonville have in January?
When is the lowest UV index in Jacksonville?
What is the UV index intensity in January in Jacksonville?
Average temperature in January
Jacksonville, MO
- Average high temperature in January: 35.2°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in January: 21.7°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in January
Jacksonville, MO
- 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 (29.91"Hg).
Average wind speed in January
Jacksonville, MO
- Average wind speed in January: 10mph
The windiest months (with the highest average wind speed) are January, February and March (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.4mph).
Average humidity in January
Jacksonville, MO
- Average humidity in January: 77%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Jacksonville, MO
- Average rainfall in January: 1.18"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in January
Jacksonville, MO
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Jacksonville, MO
- Average snowfall in January: 3.7"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Jacksonville, MO
- Average snowfall days in January: 6.9 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Jacksonville, 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 24min).
- Average sunshine in January: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in January
Jacksonville, MO
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in January
Jacksonville, MO
- Average UV index in January: 2
The months with the highest UV index are 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
Jacksonville, MO
- Average cloud cover in January: 50
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Jacksonville, 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).
Jacksonville, Missouri, USA
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