Temperatures in January
It's cold in January in Boston with an average temperature of 1°C. Temperatures this month range from a low of -2°C to a high of 4°C. At night, you can expect temperatures between -10°C and -4°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Boston in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Boston with very cold temperatures, averaging around 1°C during the day and nights close to -5°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
Mid-January
By mid-January, the average daytime temperature stays the same at 1°C, with nights close to -5°C. There might be a few showers during this period, but plenty of dry days with sunshine too. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
End of January
By the end of January, the average daytime temperature in Boston will be around 1°C, with nights close to -6°C. A shower might show up, but overall the weather will be dry and sunny. Wear a thick winter coat, jumper, long trousers, hat, and gloves.
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Precipitation in January
In January, there is an average of 77 mm of precipitation, spread over 12 days. Of the total precipitation, about 113 cm falls as snow in January. The wind speed is around 5 Bft, mostly coming from the Southwest.
The average precipitation chance is 38% per day this month. The weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Boston. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Boston in January |
London | ||
|---|---|---|---|
 Average Temperature |
1°C | 8°C | |
 High Temp |
4°C | 9°C | |
| Low Temp |
-2°C | 6°C | |
 Total Precipitation |
77 mm | 58 mm | |
| Rainy Days |
12 days | 9 days | |
 Total Snowfall |
113 cm | 0,8 cm | |
| Snowy Days |
26 days | 1 day | |
December
UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Temperature records for Boston in January
With 18°C, Boston hit the highest temperature in the last 10 years in January 2020. The lowest daytime temperature in this month was -16°C in 2018. The extreme night temperatures ranged from a low of -21°C to a high of 9°C.
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Daily Temperature in January in Boston
This chart shows the average daily temperatures, both day and night, for each day in January in Boston, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Boston
The chart below shows the average daily precipitation in January for Boston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 12 days of rain in Boston.
Daily Snowfall in January in Boston
This chart shows the average daily snowfall in January in Boston, measured in centimetres. 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 Boston
This chart shows the average daily UV index in January in Boston, 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 Boston Over the Years
This chart shows the average temperature in January in Boston, measured in degrees Celsius, over the past years.
Total Precipitation in January in Boston Over the Years
This chart shows the average precipitation in January in Boston, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in January in Boston per year
This chart shows the average snowfall in January in Boston, measured in centimetres, over the past years.
Daily climate in January for Boston
Click on a specific day in January for detailed info on the typical weather on that day in Boston. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Boston
Have you been to Boston in January?
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Average Weather in Boston by Month
Click on a month below to see detailed weather info for Boston. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
