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
Callao experiences its lowest average temperatures in January, reaching a peak of 41.5°F (5.3°C) and a minimum of 31.6°F (-0.2°C).Humidity
January and November, with an average relative humidity of 73%, are the least humid months.Rainfall
The month with the least rainfall in Callao is January, when the rain falls for 8 days and typically collects 0.98" (25mm) of precipitation.Snowfall
Months with snowfall in Callao, Virginia, are January through March, November and December. The month with the most snowfall in Callao is January, when snow falls for 1.7 days and typically aggregates up to 0.51" (13mm) of snow.Daylight
In January, the average length of the day is 9h and 53min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:57 pm. On the last day of January, in Callao, sunrise is at 7:11 am and sunset at 5:27 pm EST.
Sunshine
In January, the average sunshine is 5.5h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Callao, Virginia. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
What are the coldest months in Callao?
Is January cold in Callao?
What are the least humid months in Callao?
What is the average humidity in January in Callao?
What is the driest month in Callao?
How much does it rain in Callao in January?
When does it snow the most in Callao?
How many days does it snow in January in Callao?
How many hours of daylight does Callao have in January?
What time are sunrise and sunset in January in Callao?
How many hours of sunshine does Callao have in January?
What is the month with the lowest UV index in Callao?
What is the UV index reading in January in Callao?
Average temperature in January
Callao, VA
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in January: 31.6°F
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in January
Callao, VA
- Average pressure in January: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in January
Callao, VA
- Average wind speed in January: 10.1mph
The windiest month (with the highest average wind speed) is March (10.3mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity in January
Callao, VA
- Average humidity in January: 73%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (73%).
Average rainfall in January
Callao, VA
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days in January
Callao, VA
- Average rainfall days in January: 8 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in January
Callao, VA
- Average snowfall in January: 0.51"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in January
Callao, VA
- Average snowfall days in January: 1.7 days
The month with the highest number of snowfall days is February (2.3 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
Callao, VA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in January
Callao, VA
- Average sunshine days in January: 20.8 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is August (11.3 days).
Average UV index in January
Callao, VA
- Average UV index in January: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in January
Callao, VA
- Average cloud cover in January: 40
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in January
Callao, VA
- 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).
Callao, Virginia, USA
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