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 lowest temperatures are recorded in January, with averages reaching a high of 28°F (-2.2°C) and a low of 14.9°F (-9.5°C).Humidity
January, February, June and July, with an average relative humidity of 82%, are the most humid months in Harvey.Rainfall
January and February are months with the least rain when the rain falls for 3.8 days and typically aggregates up to 0.43" (11mm) of rain.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is January, when snow falls for 7.9 days and typically aggregates up to 1.81" (46mm) of snow.Daylight
The average length of the day in January is 9h and 36min.On the first day of the month, sunrise is at 7:37 am and sunset at 4:52 pm. On the last day of January, sunrise is at 7:23 am and sunset at 5:26 pm CST.
Sunshine
With an average of 4.2h of sunshine, January has the least sunshine of the year.UV index
January is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In January, the maximum UV index of 1 suggests these recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is January in Harvey?
What are the most humid months?
What is the average humidity in January?
What is the driest month in Harvey?
How much does it rain in January?
When does it snow the most?
How many days does it snow in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does Harvey have in January?
When is the lowest UV index?
How high is the UV index in January?
Average temperature in January
Harvey, IA
- Average high temperature in January: 28°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in January: 14.9°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in January
Harvey, IA
- Average pressure in January: 30.15"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Harvey, IA
- Average wind speed in January: 10.3mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in January
Harvey, IA
- Average humidity in January: 82%
The months with the highest relative humidity are January, February, June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Harvey, IA
- Average rainfall in January: 0.43"
The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days in January
Harvey, IA
- Average rainfall days in January: 3.8 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in January
Harvey, IA
- Average snowfall in January: 1.81"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Harvey, IA
- Average snowfall days in January: 7.9 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Harvey, IA
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in January
Harvey, IA
- Average sunshine days in January: 20.6 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (12.4 days).
Average UV index in January
Harvey, IA
- Average UV index in January: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in January
Harvey, IA
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in January
Harvey, IA
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Harvey, Iowa, USA
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