San Diego weather in July: San Diego, California: normal highs, lows, rain and records for July
San Diego in July has a normal high of 75°F and a normal low of 66°F, a daily mean of 71°F, rising from 74°F on the 1st to 76°F by the 31st. Measurable precipitation falls on 1 days in a normal July, 0.08 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 19°C, 2 mm of precipitation in July.
- NOAA stationSan Diego Lindbergh Field
- Station IDUSW00023188
- Location32.73°N 117.18°W
- Elevation15 ft (5 m)
- From the center6 miles
- Population1,404,452
- Jan 66° 50°
- Feb 66° 52°
- Mar 67° 55°
- Apr 69° 57°
- May 70° 60°
- Jun 72° 63°
- Jul 75° 66°
- Aug 77° 68°
- Sep 77° 66°
- Oct 75° 62°
- Nov 71° 55°
- Dec 66° 50°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is San Diego in July?
The normal high is 75°F and the normal low 66°F, for a daily mean of 70.7°F. July is 3.5°F warmer than June and 1.7°F cooler than August. July is the 3rd warmest month of the year in San Diego and the 10th wettest. Across the month the normal high rises 2°F, from 74°F on July 1 to 76°F on July 31. From one year to the next July's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Julys in three average between 69°F and 73°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 | 74°F | 65°F | 2% | 0% |
| July 8 | 75°F | 65°F | 2% | 0% |
| July 15 | 75°F | 66°F | 2% | 0% |
| July 22 | 76°F | 67°F | 2% | 0% |
| July 31 | 76°F | 67°F | 2% | 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 | 74°F | 65°F | 2% | 0% | 14 h 20 min |
| July 2 | 74°F | 65°F | 2% | 0% | 14 h 20 min |
| July 3 | 74°F | 65°F | 2% | 0% | 14 h 20 min |
| July 4 | 74°F | 65°F | 2% | 0% | 14 h 20 min |
| July 5 | 74°F | 65°F | 2% | 0% | 14 h 10 min |
| July 6 | 75°F | 65°F | 2% | 0% | 14 h 10 min |
| July 7 | 75°F | 65°F | 2% | 0% | 14 h 10 min |
| July 8 | 75°F | 65°F | 2% | 0% | 14 h 10 min |
| July 9 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 10 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 11 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 12 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 13 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 14 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 15 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 16 | 75°F | 66°F | 2% | 0% | 14 h 10 min |
| July 17 | 76°F | 66°F | 2% | 0% | 14 h 10 min |
| July 18 | 76°F | 66°F | 2% | 0% | 14 h |
| July 19 | 76°F | 67°F | 2% | 0% | 14 h |
| July 20 | 76°F | 67°F | 2% | 0% | 14 h |
| July 21 | 76°F | 67°F | 2% | 0% | 14 h |
| July 22 | 76°F | 67°F | 2% | 0% | 14 h |
| July 23 | 76°F | 67°F | 2% | 0% | 14 h |
| July 24 | 76°F | 67°F | 2% | 0% | 14 h |
| July 25 | 76°F | 67°F | 2% | 0% | 14 h |
| July 26 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
| July 27 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
| July 28 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
| July 29 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
| July 30 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
| July 31 | 76°F | 67°F | 2% | 0% | 13 h 50 min |
- Normal high
- 75°FJuly average
- Normal low
- 66°FJuly average
- Precipitation
- 0.08 inmonth total
- Days with precipitation
- 10.01 inch or more
- Daylight
- 14 h 20 min to 13 h 50 minJuly 1 to July 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 4
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023188; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in San Diego in July?
On a given July day the chance of 0.01 inch or more is 2% on average, highest around July 11 (2%). In all, 0.08 in falls on 1 days of a normal July.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023188.
How humid and windy is San Diego in July?
At 3 p.m. the normal temperature is 74°F with 66% relative humidity and a dew point of 62°F; at 6 a.m. it is 68°F with 82% humidity. The wind averages 6.7 mph, most often from the west in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 68°F | 62°F | 82% | 4.5 mph | – |
| 9 a.m. | 71°F | 62°F | 74% | 6.7 mph | 31% |
| noon | 74°F | 62°F | 67% | 10.1 mph | 46% |
| 3 p.m. | 74°F | 62°F | 66% | 10.3 mph | 48% |
| 6 p.m. | 71°F | 62°F | 74% | 8.4 mph | 40% |
| 9 p.m. | 69°F | 62°F | 80% | 5.5 mph | 38% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023188. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for July in San Diego?
The warmest July temperature on San Diego's official record (since 1874) is 100°F, on July 30, 1930; the coldest is 54°F, on July 4, 1880. The wettest July brought 1.71 in (2015).
The July mean against the 1991-2020 normal of 70.7°F: 2021 73.1°F (+2.4), 2022 69.5°F (−1.2), 2023 70.4°F (−0.3), 2024 71.9°F (+1.2), 2025 69.1°F (−1.6), 2026 72.4°F (+1.7). 3 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.1°F | +2.4°F | 0.00 in |
| 2022 | 69.5°F | −1.2°F | 0.00 in |
| 2023 | 70.4°F | −0.3°F | 0.00 in |
| 2024 | 71.9°F | +1.2°F | 0.00 in |
| 2025 | 69.1°F | −1.6°F | 0.00 in |
| 2026 | 72.4°F | +1.7°F | 0.00 in |
Source: records: ACIS, NWS threaded record SANthr; recent months: ACIS, station USW00023188. Records and recent months use complete months only.
How does July in San Diego 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; San Diego's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.