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
Temperature readings reach their annual highs in January, averaging 38.8°F (3.8°C) and a minimum average of 24.3°F (-4.3°C).Humidity
The average relative humidity in January is 73%.Rainfall
The month with the least rainfall is January, when the rain falls for 3.5 days and typically collects 0.35" (9mm) of precipitation.Snowfall
January through March, May, October through December are months with snowfall. In Altona, in January, during 2.8 snowfall days, 0.59" (15mm) of snow is typically accumulated. Throughout the year, there are 11.5 snowfall days, and 2.2" (56mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 51min.On the first day of January, sunrise is at 7:34 am and sunset at 5:06 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 5:37 pm CST.
Sunshine
With an average of 5.3h of sunshine, January has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: In January, the maximum UV index of 2 transforms into these recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 is the coldest month?
How cold is it in January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
How much 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 many hours of sunshine does Altona have in January?
What is the month with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Altona, MO
- Average high temperature in January: 38.8°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in January: 24.3°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in January
Altona, 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 (29.9"Hg).
Average wind speed in January
Altona, MO
- Average wind speed in January: 9.9mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in January
Altona, MO
- Average humidity in January: 73%
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Altona, MO
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in January
Altona, MO
- Average rainfall days in January: 3.5 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in January
Altona, MO
- Average snowfall in January: 0.59"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, June, July, August and September (0").
Average snowfall days in January
Altona, MO
- Average snowfall days in January: 2.8 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Altona, MO
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in January
Altona, MO
- Average sunshine days in January: 25.2 days
The month with the most sunshine days is January (25.2 days).
The month with the least sunshine days is May (12.8 days).
Average UV index in January
Altona, 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
Altona, MO
- Average cloud cover in January: 42
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 26).
Average visibility in January
Altona, 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).
Altona, Missouri, USA
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