Ontario Weather in January
Average highs run from 35°F on January 1 to 33°F on January 31, and lows from 20°F to 16°F. Normal precipitation for the month is 2.73 in over about 19 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
- 34°F
- Average low
- 17°F
- Precipitation
- 2.73 in
- Snowfall
- 21.4 in
- Record high
- 72°FJan 14, 1950
- Record low
- -26°FJan 15, 1957
- Chance of a freeze
- 100%
- Daylight
- 9 h 04 min to 9 h 54 min
- Cloud cover
- 82%
- Humidity
- 90%
- Dew point
- 21°F
- Wind
- 8.7 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 | 35°F | 20°F | 62°F 1966 | -8°F 1970 | 62% | 47% |
| Jan 2 | 35°F | 20°F | 54°F 1985 | -13°F 1956 | 62% | 47% |
| Jan 3 | 35°F | 19°F | 62°F 2004 | -4°F 1981 | 62% | 47% |
| Jan 4 | 34°F | 19°F | 61°F 2000 | -13°F 1981 | 62% | 48% |
| Jan 5 | 34°F | 19°F | 63°F 1950 | -3°F 2014 | 62% | 48% |
| Jan 6 | 34°F | 19°F | 60°F 1946 | -4°F 1942 | 61% | 48% |
| Jan 7 | 34°F | 19°F | 59°F 1946 | -4°F 1923 | 61% | 48% |
| Jan 8 | 34°F | 18°F | 67°F 2008 | -8°F 1942 | 61% | 48% |
| Jan 9 | 34°F | 18°F | 65°F 2008 | -17°F 1968 | 61% | 48% |
| Jan 10 | 34°F | 18°F | 57°F 1939 | -9°F 2004 | 61% | 49% |
| Jan 11 | 34°F | 18°F | 68°F 1975 | -11°F 1979 | 60% | 49% |
| Jan 12 | 34°F | 18°F | 63°F 2020 | -14°F 1968 | 60% | 49% |
| Jan 13 | 34°F | 18°F | 65°F 1995 | -13°F 1968 | 60% | 49% |
| Jan 14 | 33°F | 17°F | 72°F 1950 | -15°F 2015 | 60% | 50% |
| Jan 15 | 33°F | 17°F | 65°F 1995 | -26°F 1957 | 60% | 50% |
| Jan 16 | 33°F | 17°F | 64°F 1995 | -14°F 1984 | 60% | 50% |
| Jan 17 | 33°F | 17°F | 53°F 1952 | -9°F 1982 | 60% | 51% |
| Jan 18 | 33°F | 17°F | 59°F 1973 | -10°F 1976 | 60% | 51% |
| Jan 19 | 33°F | 17°F | 64°F 1996 | -12°F 1976 | 60% | 51% |
| Jan 20 | 33°F | 17°F | 58°F 1951 | -9°F 1946 | 60% | 52% |
| Jan 21 | 33°F | 17°F | 56°F 1951 | -9°F 1981 | 60% | 52% |
| Jan 22 | 33°F | 16°F | 53°F 1959 | -17°F 2022 | 60% | 52% |
| Jan 23 | 33°F | 16°F | 60°F 1967 | -11°F 1976 | 60% | 52% |
| Jan 24 | 33°F | 16°F | 58°F 1953 | -11°F 1963 | 60% | 52% |
| Jan 25 | 33°F | 16°F | 72°F 1950 | -8°F 2022 | 60% | 52% |
| Jan 26 | 33°F | 16°F | 68°F 1950 | -7°F 1927 | 60% | 52% |
| Jan 27 | 33°F | 16°F | 58°F 1974 | -17°F 1994 | 60% | 52% |
| Jan 28 | 33°F | 16°F | 56°F 2002 | -5°F 1925 | 60% | 52% |
| Jan 29 | 33°F | 16°F | 58°F 1975 | -10°F 1963 | 60% | 52% |
| Jan 30 | 33°F | 16°F | 61°F 2013 | -13°F 1923 | 60% | 52% |
| Jan 31 | 33°F | 16°F | 61°F 1988 | -5°F 1973 | 60% | 52% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:41 AM, sunset 4:45 PM
- January 31
- sunrise 7:26 AM, sunset 5:20 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00309049 (Webster 2 Ne), public domain. Records: NOAA GHCN-Daily, station USC00307842, 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.