Fullerton weather in July: Fullerton, California: normal highs, lows, rain and records for July
Fullerton in July has a normal high of 84°F and a normal low of 66°F, a daily mean of 75°F, rising from 83°F on the 1st to 86°F by the 31st. Measurable precipitation falls on 0 days in a normal July, 0.02 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 19°C, 1 mm of precipitation in July.
- NOAA stationFullerton Municipal Airport
- Station IDUSW00003166
- Location33.87°N 117.98°W
- Elevation96 ft (29 m)
- From the center3 miles
- Population140,054
- Jan 69° 46°
- Feb 69° 48°
- Mar 71° 52°
- Apr 74° 54°
- May 76° 58°
- Jun 79° 63°
- Jul 84° 66°
- Aug 87° 66°
- Sep 85° 65°
- Oct 80° 58°
- Nov 74° 51°
- Dec 68° 46°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Fullerton in July?
The normal high is 84°F and the normal low 66°F, for a daily mean of 75.2°F. July is 4.4°F warmer than June and 1.3°F cooler than August. July is the 2nd warmest month of the year in Fullerton and the 11th wettest. Across the month the normal high rises 3°F, from 83°F on July 1 to 86°F on July 31. From one year to the next July's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Julys in three average between 73°F and 77°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 1%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 83°F | 65°F | 1% | 0% |
| July 8 | 84°F | 66°F | 1% | 0% |
| July 15 | 85°F | 66°F | 1% | 0% |
| July 22 | 85°F | 67°F | 1% | 0% |
| July 31 | 86°F | 67°F | 1% | 0% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 31, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 83°F | 65°F | 1% | 0% | 14 h 20 min |
| July 2 | 83°F | 65°F | 1% | 0% | 14 h 20 min |
| July 3 | 83°F | 65°F | 1% | 0% | 14 h 20 min |
| July 4 | 83°F | 65°F | 1% | 0% | 14 h 20 min |
| July 5 | 83°F | 65°F | 1% | 0% | 14 h 20 min |
| July 6 | 83°F | 66°F | 1% | 0% | 14 h 20 min |
| July 7 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 8 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 9 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 10 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 11 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 12 | 84°F | 66°F | 1% | 0% | 14 h 20 min |
| July 13 | 84°F | 66°F | 1% | 0% | 14 h 10 min |
| July 14 | 84°F | 66°F | 1% | 0% | 14 h 10 min |
| July 15 | 85°F | 66°F | 1% | 0% | 14 h 10 min |
| July 16 | 85°F | 66°F | 1% | 0% | 14 h 10 min |
| July 17 | 85°F | 66°F | 1% | 0% | 14 h 10 min |
| July 18 | 85°F | 66°F | 1% | 0% | 14 h 10 min |
| July 19 | 85°F | 66°F | 1% | 0% | 14 h 10 min |
| July 20 | 85°F | 67°F | 1% | 0% | 14 h 10 min |
| July 21 | 85°F | 67°F | 1% | 0% | 14 h 10 min |
| July 22 | 85°F | 67°F | 1% | 0% | 14 h |
| July 23 | 85°F | 67°F | 1% | 0% | 14 h |
| July 24 | 85°F | 67°F | 1% | 0% | 14 h |
| July 25 | 85°F | 67°F | 1% | 0% | 14 h |
| July 26 | 85°F | 67°F | 1% | 0% | 14 h |
| July 27 | 85°F | 67°F | 1% | 0% | 14 h |
| July 28 | 85°F | 67°F | 1% | 0% | 14 h |
| July 29 | 85°F | 67°F | 1% | 0% | 14 h |
| July 30 | 86°F | 67°F | 1% | 0% | 13 h 50 min |
| July 31 | 86°F | 67°F | 1% | 0% | 13 h 50 min |
- Normal high
- 84°FJuly average
- Normal low
- 66°FJuly average
- Precipitation
- 0.02 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 6
- Daylight
- 14 h 20 min to 13 h 50 minJuly 1 to July 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 25
- Sunshine
- 89%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003166; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Fullerton in July?
On a given July day the chance of 0.01 inch or more is 1% on average, highest around July 1 (1%). In all, 0.02 in falls on 0 days of a normal July.
In a normal July in Fullerton, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003166.
What are the records for July in Fullerton?
The warmest July temperature on this station's record (since 1998) is 116°F, on July 6, 2018; the coldest is 58°F, on July 24, 1999. The wettest July brought 0.48 in (2015).
The July mean against the 1991-2020 normal of 75.2°F: 2021 76.8°F (+1.6), 2022 74.0°F (−1.2), 2023 75.7°F (+0.5), 2024 75.6°F (+0.4), 2025 72.4°F (−2.8), 2026 76.8°F (+1.6). 4 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 76.8°F | +1.6°F | 0.17 in |
| 2022 | 74.0°F | −1.2°F | 0.00 in |
| 2023 | 75.7°F | +0.5°F | 0.00 in |
| 2024 | 75.6°F | +0.4°F | 0.00 in |
| 2025 | 72.4°F | −2.8°F | 0.00 in |
| 2026 | 76.8°F | +1.6°F | 0.00 in |
Source: records: ACIS, station USW00003166; recent months: ACIS, station USW00003166. Records and recent months use complete months only.
How does July in Fullerton compare across California?
Across the 219 places PlainClimate covers in California, July normal highs run from 62°F in Bodega to 111°F in Needles; Fullerton's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.