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
The advent of January signifies a minor shift to an average high-temperature of a still icy 33.3°F (0.7°C), aligning closely with December. Throughout January, the temperature falls to an average low of 22.5°F (-5.3°C).Humidity
The most humid month is January, with an average relative humidity of 80%.Rainfall
In Jerome, Idaho, in January, it is raining for 6.1 days, with typically 1.26" (32mm) of accumulated precipitation. In Jerome, during the entire year, the rain falls for 86.9 days and collects up to 8.98" (228mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. The month with the most snowfall is January, when snow falls for 10.8 days and typically aggregates up to 7.44" (189mm) of snow.Daylight
In January, the average length of the day is 9h and 28min.On the first day of the month, sunrise is at 8:08 am and sunset at 5:14 pm. On the last day of January, in Jerome, Idaho, sunrise is at 7:53 am and sunset at 5:49 pm MST.
Sunshine
In January, the average sunshine is 5.9h.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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, a daily UV index of 2 turns into the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. To protect against the Sun's most potent rays, avoid direct exposure around midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is January in Jerome?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How much does it snow in January?
How many hours of daylight does Jerome have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Jerome have in January?
When is the lowest UV index in Jerome?
How high is the UV index in January?
Average temperature in January
Jerome, ID
- Average high temperature in January: 33.3°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is December (32.9°F).
- Average low temperature in January: 22.5°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in January
Jerome, ID
- Average pressure in January: 30.28"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in January
Jerome, ID
- Average wind speed in January: 7.3mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in January
Jerome, ID
- Average humidity in January: 80%
The month with the highest relative humidity is January (80%).
The months with the lowest relative humidity are July and August (29%).
Average rainfall in January
Jerome, ID
- Average rainfall in January: 1.26"
The wettest month (with the highest rainfall) is December (1.3").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in January
Jerome, ID
- Average rainfall days in January: 6.1 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in January
Jerome, ID
- Average snowfall in January: 7.44"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in January
Jerome, ID
- Average snowfall days in January: 10.8 days
The months with the highest number of snowfall days are January and December (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Jerome, ID
- Average daylight in January: 9h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in January
Jerome, ID
- Average sunshine days in January: 17.7 days
The month with the most sunshine days is July (25.2 days).
The month with the least sunshine days is March (15.2 days).
Average UV index in January
Jerome, ID
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Jerome, ID
- Average cloud cover in January: 37
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in January
Jerome, ID
- 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).
Jerome, Idaho, USA
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