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 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 60.4°F (15.8°C) and as low as 48.6°F (9.2°C).Humidity
In January, the average relative humidity in Harvey is 74%.Rainfall
In Harvey, Louisiana, in January, it is raining for 5.8 days, with typically 0.47" (12mm) of accumulated precipitation. Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.Snowfall
January is the only month when snow falls. The month with the most snowfall days is January, when snow falls for 0.1 days.Daylight
The average length of the day in January is 10h and 29min.On the first day of January in Harvey, sunrise is at 6:55 am and sunset at 5:11 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 5:36 pm CST.
Sunshine
In Harvey, the average sunshine in January is 5.7h.UV index
The average daily maximum UV index in January is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 during January translates into the following recommendations:
Take precautions - Protection against sun damage is advised. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What are January temperatures?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most in Harvey?
When does it start to snow?
What is the average length of the day in January in Harvey?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
Harvey, LA
- Average high temperature in January: 60.4°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in January: 48.6°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in January
Harvey, LA
- Average pressure in January: 30.16"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in January
Harvey, LA
- Average wind speed in January: 9.6mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in January
Harvey, LA
- Average humidity in January: 74%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Harvey, LA
- Average rainfall in January: 0.47"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in January
Harvey, LA
- Average rainfall days in January: 5.8 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in January
Harvey, LA
- Average snowfall days in January: 0.1 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Harvey, LA
- Average daylight in January: 10h and 3min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January: 5h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in January
Harvey, LA
- Average sunshine days in January: 23.1 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in January
Harvey, LA
- Average UV index in January: 4
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in January
Harvey, LA
- Average cloud cover in January: 36
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in January
Harvey, LA
- 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).
Harvey, Louisiana, USA
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