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Pomona, CA Weather on July 17
July 17th in Pomona, CA typically brings hot summer weather, with average highs around 90°F and lows near 61°F — a 29°F daily swing. Over 51 years of records, the warmest July 17th was in 2010 (87°F average), while the coldest was 1987 (65°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
What to Expect on July 17
Planning for July 17th in Pomona, CA? Stay hydrated and seek shade during peak afternoon hours.
July 17 Weather Records for Pomona
- •The all-time record high for July 17th in Pomona, CA is 103°F, set in 1998.
- •The coldest July 17th on record dropped to 52°F in 1973.
- •Temperatures have reached 90°F or higher on July 17th in 24 of the last 51 years.
Frequently Asked Questions
What was the warmest July 17 ever in Pomona?
The warmest July 17 in Pomona, CA reached 103°F in 1998. That is 13°F above the long-term average high of 90°F.
What was the coldest July 17 ever in Pomona?
The coldest July 17 in Pomona, CA dropped to 52°F in 1973. That is 9°F below the long-term average low of 61°F.
What is the average temperature on July 17 in Pomona?
On July 17, Pomona averages a high of 90°F and a low of 61°F based on 51 years of NOAA weather observations from POMONA/FAIRPLEX.
How many years of weather data are available for July 17 in Pomona?
We have 51 years of weather records for July 17 in Pomona, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
July 17 Weather History in Pomona
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 87°F | 61°F | -- | -- |
| 2024 | 89°F | 62°F | -- | -- |
| 2023 | 97°F | 72°F | -- | -- |
| 2022 | 96°F | 70°F | -- | -- |
| 2021 | 93°F | 63°F | -- | -- |
| 2020 | 88°F | 58°F | -- | -- |
| 2019 | 85°F | 60°F | -- | -- |
| 2018 | 91°F | 63°F | -- | -- |
| 2017 | 89°F | 66°F | -- | -- |
| 2016 | 90°F | 58°F | -- | -- |
| 2015 | 94°F | 59°F | -- | -- |
| 2014 | 82°F | 55°F | -- | -- |
| 2013 | 92°F | 58°F | -- | -- |
| 2012 | 83°F | 60°F | 0" | -- |
| 2011 | 89°F | 55°F | 0" | -- |
| 2010 | 102°F | 71°F | 0" | -- |
| 2009 | 99°F | 66°F | 0" | -- |
| 2008 | 91°F | 66°F | 0" | -- |
| 2007 | 88°F | 62°F | 0" | -- |
| 2006 | 102°F | 69°F | 0" | -- |
| 2005 | 69°F | 68°F | 0" | -- |
| 2004 | 95°F | 67°F | -- | -- |
| 2003 | 97°F | 71°F | 0" | -- |
| 2002 | 88°F | 60°F | -- | -- |
| 2001 | 82°F | 56°F | 0" | -- |
| 2000 | 90°F | 55°F | -- | -- |
| 1999 | 88°F | 60°F | -- | -- |
| 1998 | 103°F | 64°F | 0" | -- |
| 1993 | 84°F | 58°F | 0" | -- |
| 1992 | 84°F | 55°F | 0" | -- |
| 1991 | 79°F | 60°F | 0" | -- |
| 1990 | 89°F | 63°F | 0" | -- |
| 1989 | 89°F | 55°F | 0" | -- |
| 1988 | 94°F | 63°F | 0" | -- |
| 1987 | 74°F | 57°F | 0" | -- |
| 1986 | 87°F | 54°F | 0" | -- |
| 1985 | 91°F | 64°F | 0" | -- |
| 1984 | 96°F | 65°F | 0" | -- |
| 1983 | 86°F | 58°F | 0" | -- |
| 1982 | 87°F | 56°F | 0" | -- |
| 1981 | 97°F | 59°F | 0" | -- |
| 1980 | 96°F | 56°F | 0" | -- |
| 1979 | 94°F | 62°F | 0" | -- |
| 1978 | 97°F | 59°F | 0" | -- |
| 1977 | 94°F | 60°F | 0" | -- |
| 1976 | 84°F | 61°F | 0" | -- |
| 1975 | 83°F | 57°F | 0" | -- |
| 1974 | 94°F | 57°F | 0" | -- |
| 1973 | 84°F | 52°F | 0" | -- |
| 1972 | 87°F | 60°F | 0" | -- |
| 1971 | 88°F | 62°F | 0" | -- |
Based on 51 years of data from NOAA station: POMONA/FAIRPLEX
Monthly Climate Averages
Historical temperature and precipitation averages for Pomona, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.