Petaluma weather in July: Petaluma, California: normal highs, lows, rain and records for July
Petaluma in July has a normal high of 81°F and a normal low of 52°F, a daily mean of 67°F, holding near 81°F all month. Measurable precipitation falls on 0 days in a normal July, 0.01 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 11°C, 0 mm of precipitation in July.
- NOAA stationPetaluma Airport
- Station IDUSC00046826
- Location38.26°N 122.61°W
- Elevation20 ft (6 m)
- Population59,393
- Jan 58° 39°
- Feb 61° 40°
- Mar 65° 42°
- Apr 68° 44°
- May 72° 47°
- Jun 78° 50°
- Jul 81° 52°
- Aug 81° 53°
- Sep 82° 51°
- Oct 76° 48°
- Nov 66° 42°
- Dec 58° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Petaluma in July?
The normal high is 81°F and the normal low 52°F, for a daily mean of 66.6°F. July is 2.3°F warmer than June and 0.4°F cooler than August. July is the 2nd warmest month of the year in Petaluma and the 12th wettest. From one year to the next July's mean temperature typically moves about 1.4°F either way (NOAA's standard deviation), so roughly two Julys in three average between 65°F and 68°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 2%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 81°F | 52°F | 2% | 1% |
| July 8 | 81°F | 52°F | 1% | 1% |
| July 15 | 81°F | 52°F | 1% | 0% |
| July 22 | 81°F | 53°F | 1% | 0% |
| July 31 | 81°F | 53°F | 1% | 0% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 6, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 81°F | 52°F | 2% | 1% | 14 h 50 min |
| July 2 | 81°F | 52°F | 2% | 1% | 14 h 50 min |
| July 3 | 81°F | 52°F | 2% | 1% | 14 h 50 min |
| July 4 | 81°F | 52°F | 2% | 1% | 14 h 50 min |
| July 5 | 81°F | 52°F | 2% | 1% | 14 h 50 min |
| July 6 | 81°F | 52°F | 2% | 1% | 14 h 40 min |
| July 7 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 8 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 9 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 10 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 11 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 12 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 13 | 81°F | 52°F | 1% | 1% | 14 h 40 min |
| July 14 | 81°F | 52°F | 1% | 0% | 14 h 40 min |
| July 15 | 81°F | 52°F | 1% | 0% | 14 h 40 min |
| July 16 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 17 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 18 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 19 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 20 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 21 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 22 | 81°F | 53°F | 1% | 0% | 14 h 30 min |
| July 23 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 24 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 25 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 26 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 27 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 28 | 81°F | 53°F | 1% | 0% | 14 h 20 min |
| July 29 | 81°F | 53°F | 1% | 0% | 14 h 10 min |
| July 30 | 81°F | 53°F | 1% | 0% | 14 h 10 min |
| July 31 | 81°F | 53°F | 1% | 0% | 14 h 10 min |
- Normal high
- 81°FJuly average
- Normal low
- 52°FJuly average
- Precipitation
- 0.01 inmonth total
- Days with precipitation
- fewer than 10.01 inch or more
- Days at 90°F or more
- 4
- Daylight
- 14 h 50 min to 14 h 10 minJuly 1 to July 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 18
- Sunshine
- 95%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00046826; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Petaluma in July?
On a given July day the chance of 0.01 inch or more is 1% on average, highest around July 1 (2%). In all, 0.01 in falls on 0 days of a normal July.
In a normal July in Petaluma, 4 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00046826.
What are the records for July in Petaluma?
The warmest July temperature on this station's record (since 1893) is 110°F, on July 14, 1972; the coldest is 39°F, on July 31, 1919. The wettest July brought 0.95 in (1974).
The July mean against the 1991-2020 normal of 66.6°F: 2021 66.6°F (at normal), 2022 66.4°F (−0.2), 2023 68.3°F (+1.8), 2024 70.4°F (+3.8), 2025 64.6°F (−2.0), 2026 67.3°F (+0.7). 3 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.6°F | at normal | 0.00 in |
| 2022 | 66.4°F | −0.2°F | 0.00 in |
| 2023 | 68.3°F | +1.8°F | 0.00 in |
| 2024 | 70.4°F | +3.8°F | 0.00 in |
| 2025 | 64.6°F | −2.0°F | 0.00 in |
| 2026 | 67.3°F | +0.7°F | 0.00 in |
Source: records: ACIS, station USC00046826; recent months: ACIS, station USC00046826. Records and recent months use complete months only.
How does July in Petaluma 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; Petaluma's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.