United StatesAverage weather for Manassas in January
It's cold in January in Manassas with an average temperature of 7°C. Temperatures this month range from a low of 2°C to a high of 12°C. At night, you can expect temperatures between -8°C and 1°C.
Start of January
The month of January starts in Manassas with cold temps, averaging around 7°C during the day and nights around -3°C. A few showers might pop up early in the month, but overall, it’ll stay mostly sunny and dry.
Mid January
By mid-January, daytime temps rise to around 8°C, with nights around -3°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of January
By the end of January, the average daytime temperature in Manassas is around 7°C, while nighttime temps are about -4°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
In January, there is an average of 38 mm of precipitation, spread over 6 days. Of the total precipitation, about 20 cm falls as snow in January. The wind speed is around 4 Bft, mostly coming from the Southwest.
Manassas in January |
New York | ||
|---|---|---|---|
 Average temperature |
7°C | 5°C | |
 Max. temperature |
12°C | 11°C | |
| Min. temperature |
2°C | -5°C | |
 Total precipitation |
38 mm | 97 mm | |
| Rainy days |
6 days | 12 days | |
 Total snowfall |
20 cm | 16 cm | |
| Snowy days |
8 days | 8 days | |
December
UV index
The UV index is a maximum of 3 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Temperature records
With 22°C in 2020, Manassas reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was -8°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of -19°C to a highest value of 14°C.
Check out the climate of Manassas for all months and discover the best travel time
Daily Temperature in January in Manassas
This chart shows the average daily high and low temperatures in January for Manassas, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in January in Manassas
The chart below shows the average daily precipitation in January for Manassas, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for January, you can expect about 6 days of precipitation in Manassas.
Daily Snowfall in January in Manassas
This chart shows the average daily snowfall in January in Manassas, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in January.
Daily UV index in January in Manassas
This chart shows the average daily UV index in January in Manassas, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Manassas over the years
This chart shows the average temperature in January in Manassas, measured in degrees Celsius, over the past few years.
Total precipitation in January in Manassas over the years
This chart shows the average precipitation in January in Manassas, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Snowfall in January in Manassas per year
This chart shows the average snowfall in January in Manassas, measured in centimeters, over the past few years.
Daily weather in January for Manassas
Click on any day in January to get detailed info about the usual weather on that day in Manassas. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Manassas
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Average weather in Manassas by month
Click on a month below to see detailed weather info for Manassas. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
