Weather on February 4
Ontario, CA
55 Years of Data
Avg High
68°F
Avg Low
43°F
Warmest
2026
71°F avg
Coldest
1979
46°F avg
About This Date
February 4th in Ontario, CA typically brings mild winter weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 42 years of records, the warmest February 4th was in 2026 (71°F average), while the coldest was 1979 (46°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 14% of February 4th dates historically, with the wettest February 4th recording 2.59" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for February 4th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 87° | 56° | 71° | — | — |
| 2025 | 62° | 50° | 56° | — | — |
| 2024 | 60° | 48° | 54° | 2.59" | — |
| 2023 | 71° | 39° | 55° | — | — |
| 2022 | 70° | 43° | 56° | — | — |
| 2021 | 65° | 45° | 55° | — | — |
| 2020 | 56° | 37° | 46° | — | — |
| 2019 | 55° | 48° | 52° | 0.66" | — |
| 2018 | 86° | 49° | 67° | — | — |
| 2017 | 62° | 49° | 55° | — | — |
| 2016 | 68° | 37° | 53° | — | — |
| 2015 | 78° | 47° | 62° | — | — |
| 2014 | 60° | 46° | 53° | — | — |
| 2013 | 73° | 46° | 60° | — | — |
| 2012 | 71° | 36° | 53° | — | — |
| 2011 | 67° | 34° | 50° | — | — |
| 2010 | 61° | 45° | 53° | — | — |
| 2009 | 82° | 46° | 64° | — | — |
| 2008 | 58° | 38° | 48° | — | — |
| 2007 | 85° | 42° | 63° | — | — |
| 2006 | 75° | 45° | 60° | — | — |
| 2005 | 74° | 50° | 62° | — | — |
| 2004 | 62° | 41° | 52° | — | — |
| 2003 | 69° | 41° | 55° | — | — |
| 2002 | 75° | 38° | 56° | — | — |
| 2001 | 86° | 51° | 69° | — | — |
| 2000 | 65° | 46° | 55° | — | — |
| 1999 | 53° | 46° | 50° | 0.89" | — |
| 1984 | 76° | 41° | 58° | — | — |
| 1983 | 66° | 37° | 52° | — | — |
| 1982 | 57° | 40° | 48° | — | — |
| 1981 | 64° | 34° | 49° | — | — |
| 1980 | 79° | 50° | 64° | — | — |
| 1979coldest | 61° | 31° | 46° | — | — |
| 1978 | 75° | 47° | 61° | — | — |
| 1977 | 71° | 43° | 57° | — | — |
| 1976 | 54° | 46° | 50° | 1.02" | — |
| 1975 | 54° | 42° | 48° | 0.74" | — |
| 1974 | 75° | 45° | 60° | — | — |
| 1973 | 58° | 41° | 49° | 0.25" | — |
| 1972 | 67° | 34° | 50° | — | — |
| 1971 | 67° | 38° | 52° | — | — |
42 years of data from ONTARIO INTL AP