Arlington Weather in January
Average highs run from 40°F on January 1 to 43°F on January 31, and lows from 29°F to 30°F. Normal precipitation for the month is 1.47 in over about 11 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
- 41°F
- Average low
- 30°F
- Precipitation
- 1.47 in
- Snowfall
- 2.0 in
- Record high
- 70°FJan 1, 1918
- Record low
- -19°FJan 10, 1909
- Chance of a freeze
- 100%
- Daylight
- 8 h 45 min to 9 h 43 min
- Cloud cover
- 73%
- Humidity
- 78%
- Dew point
- 29°F
- Wind
- 10.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jan 1 | 40°F | 29°F | 70°F 1918 | -12°F 1979 | 38% | 7% |
| Jan 2 | 40°F | 29°F | 65°F 1918 | -7°F 1978 | 38% | 7% |
| Jan 3 | 40°F | 29°F | 62°F 1902 | -8°F 1924 | 38% | 7% |
| Jan 4 | 40°F | 29°F | 61°F 1903 | -6°F 1924 | 38% | 7% |
| Jan 5 | 40°F | 29°F | 67°F 1984 | -7°F 1950 | 38% | 6% |
| Jan 6 | 40°F | 29°F | 66°F 1903 | -14°F 1937 | 38% | 6% |
| Jan 7 | 40°F | 29°F | 65°F 1902 | -11°F 1937 | 38% | 6% |
| Jan 8 | 40°F | 29°F | 64°F 2002 | -13°F 1937 | 38% | 6% |
| Jan 9 | 40°F | 30°F | 62°F 1953 | -17°F 1909 | 38% | 6% |
| Jan 10 | 40°F | 30°F | 64°F 1990 | -19°F 1909 | 38% | 6% |
| Jan 11 | 40°F | 30°F | 63°F 1999 | -11°F 1909 | 37% | 6% |
| Jan 12 | 40°F | 30°F | 67°F 1983 | -19°F 1909 | 37% | 6% |
| Jan 13 | 40°F | 30°F | 67°F 1983 | -10°F 1909 | 37% | 6% |
| Jan 14 | 40°F | 30°F | 63°F 1994 | -11°F 1950 | 37% | 6% |
| Jan 15 | 40°F | 30°F | 65°F 1974 | -7°F 1907 | 37% | 6% |
| Jan 16 | 41°F | 30°F | 65°F 2014 | -10°F 1916 | 37% | 5% |
| Jan 17 | 41°F | 30°F | 63°F 1977 | -18°F 1930 | 36% | 5% |
| Jan 18 | 41°F | 30°F | 65°F 1944 | -13°F 1922 | 36% | 5% |
| Jan 19 | 41°F | 30°F | 68°F 1944 | -5°F 1916 | 36% | 5% |
| Jan 20 | 41°F | 30°F | 70°F 1968 | -14°F 1930 | 36% | 5% |
| Jan 21 | 41°F | 30°F | 60°F 1925 | -17°F 1930 | 35% | 5% |
| Jan 22 | 41°F | 30°F | 62°F 2005 | -15°F 1930 | 35% | 5% |
| Jan 23 | 42°F | 30°F | 62°F 1975 | -10°F 1930 | 35% | 5% |
| Jan 24 | 42°F | 30°F | 65°F 1935 | -11°F 1949 | 35% | 5% |
| Jan 25 | 42°F | 30°F | 68°F 2015 | -16°F 1902 | 34% | 5% |
| Jan 26 | 42°F | 30°F | 67°F 1934 | -15°F 1957 | 34% | 4% |
| Jan 27 | 42°F | 30°F | 65°F 2003 | -15°F 1957 | 34% | 4% |
| Jan 28 | 42°F | 30°F | 65°F 1931 | -11°F 1957 | 33% | 4% |
| Jan 29 | 43°F | 30°F | 68°F 1971 | -9°F 1957 | 33% | 4% |
| Jan 30 | 43°F | 30°F | 65°F 1971 | -10°F 1950 | 33% | 4% |
| Jan 31 | 43°F | 30°F | 69°F 1971 | -16°F 1950 | 32% | 4% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:42 AM, sunset 4:27 PM
- January 31
- sunrise 7:23 AM, sunset 5:06 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00350265 (Arlington), public domain. Records: NOAA GHCN-Daily, station USC00353827, 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.