Weather on January 21
Boston, MA
55 Years of Data
About This Date
January 21st in Boston, MA typically brings cold winter weather, with average highs around 32°F and lows near 19°F. Over 56 years of records, the warmest January 21st was in 2006 (49°F average), while the coldest was 2005 (8°F) — a 41°F range across recorded history. Precipitation has occurred on 30% of recorded January 21st dates, with snow falling 27% of the time (heaviest snowfall: 7.3"). The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for January 21st in Boston, MA? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella. Check road conditions if traveling, as snow is possible.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 35° | 13° | 24° | 0.02" | 0.2" |
| 2025 | 19° | 13° | 16° | — | — |
| 2024 | 28° | 15° | 22° | — | — |
| 2023 | 33° | 29° | 31° | — | 0.1" |
| 2022 | 22° | 9° | 16° | — | — |
| 2021 | 32° | 21° | 27° | — | 0.1" |
| 2020 | 28° | 18° | 23° | — | — |
| 2019 | 10° | 5° | 8° | — | — |
| 2018 | 49° | 34° | 41° | — | — |
| 2017 | 55° | 37° | 46° | — | — |
| 2016 | 33° | 21° | 27° | — | — |
| 2015 | 34° | 22° | 28° | — | — |
| 2014 | 26° | 11° | 19° | 0.11" | 3.9" |
| 2013 | 30° | 23° | 27° | 0.01" | 0.4" |
| 2012 | 23° | 16° | 19° | 0.18" | 2.9" |
| 2011 | 30° | 22° | 26° | 0.73" | 7.3" |
| 2010 | 41° | 28° | 35° | — | — |
| 2009 | 25° | 15° | 20° | — | — |
| 2008 | 25° | 15° | 20° | — | — |
| 2007 | 26° | 13° | 19° | — | — |
| 2006warmest | 60° | 37° | 49° | — | — |
| 2005coldest | 14° | 2° | 8° | — | — |
| 2004 | 29° | 15° | 22° | — | — |
| 2003 | 21° | 10° | 16° | — | — |
| 2002 | 37° | 25° | 31° | 0.19" | — |
| 2001 | 29° | 20° | 24° | 0.05" | 6.4" |
| 2000 | 19° | 4° | 11° | 0.02" | 0.4" |
| 1999 | 39° | 28° | 34° | 0.01" | — |
| 1998 | 36° | 28° | 32° | — | — |
| 1997 | 36° | 25° | 30° | — | — |
| 1996 | 35° | 25° | 30° | — | — |
| 1995 | 45° | 40° | 42° | 0.11" | — |
| 1994 | 22° | 6° | 14° | — | — |
| 1993 | 40° | 26° | 33° | — | — |
| 1992 | 31° | 17° | 24° | — | — |
| 1991 | 37° | 14° | 26° | 0.2" | 1.9" |
| 1990 | 34° | 15° | 24° | 0.74" | 3.5" |
| 1989 | 35° | 15° | 25° | — | — |
| 1988 | 50° | 35° | 43° | — | — |
| 1987 | 33° | 16° | 24° | — | — |
| 1986 | 45° | 32° | 38° | — | — |
| 1985 | 12° | 6° | 9° | — | — |
| 1984 | 15° | 8° | 12° | — | — |
| 1983 | 28° | 15° | 22° | — | — |
| 1982 | 20° | 7° | 13° | — | — |
| 1981 | 30° | 14° | 22° | — | — |
| 1980 | 34° | 24° | 29° | — | — |
| 1979 | 54° | 30° | 42° | 2.52" | 1" |
| 1978 | 29° | 16° | 22° | 0.07" | 0.4" |
| 1977 | 33° | 25° | 29° | — | — |
| 1976 | 37° | 23° | 30° | 0.12" | 1" |
| 1975 | 30° | 11° | 20° | — | — |
| 1974 | 45° | 30° | 37° | 0.37" | — |
| 1973 | 39° | 21° | 30° | — | — |
| 1972 | 41° | 28° | 35° | — | — |
| 1971 | 33° | 10° | 22° | 0.01" | 0.1" |
Boston, MA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Boston, MA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Boston, MA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Boston, MA
Most pleasant months in Boston, MA: May, June, August, September.
What to expect on January 21st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
January 21st outlook →