Heathrow Weather in January
Average highs run from 70°F on January 1 to 71°F on January 31, and lows from 50°F to 50°F. Normal precipitation for the month is 2.77 in over about 8 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 70°F
- Average low
- 49°F
- Precipitation
- 2.77 in
- Record high
- 87°FJan 22, 2017
- Record low
- 25°FJan 10, 2010
- Chance of a freeze
- 32%
- Daylight
- 10 h 21 min to 10 h 50 min
- Cloud cover
- 59%
- Humidity
- 78%
- Dew point
- 51°F
- Wind
- 8.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Jan 1 | 70°F | 50°F | 85°F 2021 | 27°F 2001 | 25% |
| Jan 2 | 70°F | 50°F | 86°F 2017 | 35°F 2008 | 25% |
| Jan 3 | 70°F | 50°F | 86°F 1967 | 32°F 2008 | 25% |
| Jan 4 | 70°F | 50°F | 85°F 2015 | 29°F 2010 | 25% |
| Jan 5 | 70°F | 50°F | 81°F 1960 | 29°F 2001 | 25% |
| Jan 6 | 70°F | 49°F | 84°F 2007 | 28°F 2010 | 25% |
| Jan 7 | 70°F | 49°F | 85°F 2007 | 27°F 2010 | 26% |
| Jan 8 | 70°F | 49°F | 82°F 1964 | 30°F 1958 | 26% |
| Jan 9 | 70°F | 49°F | 83°F 1964 | 27°F 1958 | 26% |
| Jan 10 | 70°F | 49°F | 83°F 2026 | 25°F 2010 | 26% |
| Jan 11 | 70°F | 49°F | 85°F 2014 | 26°F 2010 | 26% |
| Jan 12 | 70°F | 49°F | 85°F 2020 | 28°F 2010 | 26% |
| Jan 13 | 70°F | 49°F | 84°F 2020 | 30°F 2011 | 26% |
| Jan 14 | 70°F | 49°F | 84°F 2020 | 26°F 1964 | 26% |
| Jan 15 | 70°F | 49°F | 85°F 2020 | 31°F 1956 | 26% |
| Jan 16 | 70°F | 49°F | 83°F 2007 | 31°F 2026 | 26% |
| Jan 17 | 70°F | 49°F | 81°F 2017 | 29°F 1959 | 26% |
| Jan 18 | 70°F | 49°F | 82°F 2001 | 25°F 2018 | 26% |
| Jan 19 | 70°F | 49°F | 84°F 2001 | 32°F 2003 | 26% |
| Jan 20 | 70°F | 49°F | 85°F 1963 | 35°F 1960 | 26% |
| Jan 21 | 70°F | 49°F | 84°F 2010 | 28°F 2009 | 26% |
| Jan 22 | 70°F | 49°F | 87°F 2017 | 28°F 2009 | 26% |
| Jan 23 | 70°F | 49°F | 85°F 2002 | 30°F 1960 | 26% |
| Jan 24 | 70°F | 49°F | 84°F 1962 | 27°F 2003 | 26% |
| Jan 25 | 70°F | 49°F | 86°F 2026 | 33°F 1955 | 26% |
| Jan 26 | 70°F | 49°F | 85°F 2012 | 33°F 2000 | 26% |
| Jan 27 | 70°F | 49°F | 86°F 1962 | 33°F 2000 | 26% |
| Jan 28 | 71°F | 49°F | 83°F 1957 | 33°F 1966 | 26% |
| Jan 29 | 71°F | 50°F | 83°F 1957 | 34°F 2004 | 26% |
| Jan 30 | 71°F | 50°F | 85°F 2002 | 27°F 1966 | 26% |
| Jan 31 | 71°F | 50°F | 86°F 2002 | 26°F 1966 | 26% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:19 AM, sunset 5:40 PM
- January 31
- sunrise 7:14 AM, sunset 6:04 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00087982 (Sanford), public domain. Records: NOAA GHCN-Daily, station USW00012854, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.