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
Mountain Brook's January weather reaches an average high of 50.7°F (10.4°C) and an average low of 35.2°F (1.8°C), making it the coldest month.Humidity
The average relative humidity in January is 75%.Rainfall
In Mountain Brook, in January, it is raining for 8.7 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 143.1 rainfall days, and 18.58" (472mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. The month with the most snowfall is January, when snow falls for 0.8 days and typically aggregates up to 0.12" (3mm) of snow.Daylight
The average length of the day in January is 10h and 14min.On the first day of the month, sunrise is at 6:51 am and sunset at 4:49 pm. On the last day of January, sunrise is at 6:43 am and sunset at 5:16 pm CST.
Sunshine
In Mountain Brook, the average sunshine in January is 5.2h.UV index
In January, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In January, an average UV index of 3 transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
What are the temperatures in January?
What is the average humidity in January?
How many days does it rain in January?
When does it snow the most in Mountain Brook?
How many days does it snow in January?
What is the average length of the day in January?
When is the sunrise / sunset in January in Mountain Brook?
How many hours of sunshine does Mountain Brook have in January?
How high is the UV index in January?
Average temperature in January
Mountain Brook, AL
- Average high temperature in January: 50.7°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in January: 35.2°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in January
Mountain Brook, AL
- 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 (29.98"Hg).
Average wind speed in January
Mountain Brook, AL
- Average wind speed in January: 7.3mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in January
Mountain Brook, AL
- Average humidity in January: 75%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in January
Mountain Brook, AL
- Average rainfall in January: 1.54"
The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in January
Mountain Brook, AL
- Average rainfall days in January: 8.7 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in January
Mountain Brook, AL
- Average snowfall in January: 0.12"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Mountain Brook, AL
- Average snowfall days in January: 0.8 days
The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Mountain Brook, AL
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in January
Mountain Brook, AL
- Average sunshine days in January: 19.8 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in January
Mountain Brook, AL
- Average UV index in January: 3
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in January
Mountain Brook, AL
- Average cloud cover in January: 44
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in January
Mountain Brook, AL
- 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).
Mountain Brook, Alabama, USA
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