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 is the coldest month of the year, registering average temperatures as high as 25.2°F (-3.8°C) and as low as 13.3°F (-10.4°C).Humidity
January and February, with an average relative humidity of 86%, are the most humid months.Rainfall
The months with the least rainfall are January and February Rain falls for 5.2 days and accumulates 1.26" (32mm) of rain.Snowfall
January through April, October through December are months with snowfall. The month with the most snowfall in Monticello, Iowa, is January, when snow falls for 12.1 days and typically aggregates up to 5.04" (128mm) of snow.Daylight
In Monticello, the average length of the day in January is 9h and 31min.On the first day of January in Monticello, sunrise is at 7:33 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:17 pm CST.
Sunshine
With an average of 3.8h of sunshine, January has the least sunshine of the year in Monticello.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Monticello, Iowa. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In January, the maximum UV index of 1 suggests these recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What time of the year is the coldest in Monticello?
How cold is it in Monticello in January?
What are the most humid months in Monticello?
What is the average humidity in January in Monticello?
What is the driest month in Monticello?
How many days does it rain in January in Monticello?
What is the snowiest month in Monticello?
How much does it snow in Monticello in January?
How many hours of daylight does Monticello have in January?
What time are sunrise and sunset in January in Monticello?
What is the month with the least sunshine in Monticello?
How many hours of sunshine does Monticello have in January?
When is the lowest UV index in Monticello?
What is the UV index intensity in January in Monticello?
Average temperature in January
Monticello, IA
- Average high temperature in January: 25.2°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in January: 13.3°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in January
Monticello, IA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in January
Monticello, IA
- Average wind speed in January: 10.4mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in January
Monticello, IA
- Average humidity in January: 86%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall in January
Monticello, IA
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in January
Monticello, IA
- Average rainfall days in January: 5.2 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in January
Monticello, IA
- Average snowfall in January: 5.04"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Monticello, IA
- Average snowfall days in January: 12.1 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Monticello, 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: 3h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in January
Monticello, IA
- Average sunshine days in January: 15.8 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in January
Monticello, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in January
Monticello, IA
- Average cloud cover in January: 60
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in January
Monticello, IA
- Average visibility in January: 5mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Monticello, Iowa, USA
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