Half Moon Bay weather in July: Half Moon Bay, California: normal highs, lows, rain and records for July
Half Moon Bay in July has a normal high of 65°F and a normal low of 53°F, a daily mean of 59°F, holding near 65°F all month. Measurable precipitation falls on 7 days in a normal July, 0.14 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 12°C, 4 mm of precipitation in July.
- NOAA stationHalf Moon Bay
- Station IDUSC00043714
- Location37.47°N 122.44°W
- Elevation27 ft (8 m)
- Population11,324
- Jan 59° 43°
- Feb 60° 43°
- Mar 60° 44°
- Apr 61° 45°
- May 62° 48°
- Jun 64° 50°
- Jul 65° 53°
- Aug 66° 54°
- Sep 66° 51°
- Oct 66° 48°
- Nov 63° 45°
- Dec 59° 43°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Half Moon Bay in July?
The normal high is 65°F and the normal low 53°F, for a daily mean of 58.8°F. July is 1.9°F warmer than June and 0.9°F cooler than August. July is the 2nd warmest month of the year in Half Moon Bay and the 12th wettest. From one year to the next July's mean temperature typically moves about 1.5°F either way (NOAA's standard deviation), so roughly two Julys in three average between 57°F and 60°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 26%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| July 1 | 65°F | 51°F | 19% | 2% |
| July 8 | 65°F | 52°F | 21% | 1% |
| July 15 | 65°F | 53°F | 23% | 1% |
| July 22 | 65°F | 54°F | 24% | 1% |
| July 31 | 65°F | 54°F | 26% | 1% |
Every day of July: normal high, low and chance of precipitation (warmest afternoon July 29, coldest night July 1)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| July 1 | 65°F | 51°F | 19% | 2% | 14 h 40 min |
| July 2 | 65°F | 51°F | 19% | 2% | 14 h 40 min |
| July 3 | 65°F | 51°F | 20% | 2% | 14 h 40 min |
| July 4 | 65°F | 51°F | 20% | 1% | 14 h 40 min |
| July 5 | 65°F | 51°F | 20% | 1% | 14 h 40 min |
| July 6 | 65°F | 52°F | 20% | 1% | 14 h 40 min |
| July 7 | 65°F | 52°F | 21% | 1% | 14 h 40 min |
| July 8 | 65°F | 52°F | 21% | 1% | 14 h 40 min |
| July 9 | 65°F | 52°F | 21% | 1% | 14 h 40 min |
| July 10 | 65°F | 52°F | 21% | 1% | 14 h 40 min |
| July 11 | 65°F | 52°F | 22% | 1% | 14 h 40 min |
| July 12 | 65°F | 52°F | 22% | 1% | 14 h 30 min |
| July 13 | 65°F | 52°F | 22% | 1% | 14 h 30 min |
| July 14 | 65°F | 53°F | 23% | 1% | 14 h 30 min |
| July 15 | 65°F | 53°F | 23% | 1% | 14 h 30 min |
| July 16 | 65°F | 53°F | 23% | 1% | 14 h 30 min |
| July 17 | 65°F | 53°F | 24% | 1% | 14 h 30 min |
| July 18 | 65°F | 53°F | 24% | 1% | 14 h 30 min |
| July 19 | 65°F | 53°F | 24% | 1% | 14 h 30 min |
| July 20 | 65°F | 53°F | 24% | 1% | 14 h 30 min |
| July 21 | 65°F | 53°F | 24% | 1% | 14 h 20 min |
| July 22 | 65°F | 54°F | 24% | 1% | 14 h 20 min |
| July 23 | 65°F | 54°F | 25% | 1% | 14 h 20 min |
| July 24 | 65°F | 54°F | 25% | 1% | 14 h 20 min |
| July 25 | 65°F | 54°F | 25% | 1% | 14 h 20 min |
| July 26 | 65°F | 54°F | 25% | 1% | 14 h 20 min |
| July 27 | 65°F | 54°F | 25% | 1% | 14 h 10 min |
| July 28 | 65°F | 54°F | 25% | 1% | 14 h 10 min |
| July 29 | 65°F | 54°F | 26% | 1% | 14 h 10 min |
| July 30 | 65°F | 54°F | 26% | 1% | 14 h 10 min |
| July 31 | 65°F | 54°F | 26% | 1% | 14 h 10 min |
- Normal high
- 65°FJuly average
- Normal low
- 53°FJuly average
- Precipitation
- 0.14 inmonth total
- Days with precipitation
- 70.01 inch or more
- Daylight
- 14 h 40 min to 14 h 10 minJuly 1 to July 31
- Days at 70°F or more
- 3
- Sunshine
- 78%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00043714; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Half Moon Bay in July?
On a given July day the chance of 0.01 inch or more is 23% on average, highest around July 31 (26%). In all, 0.14 in falls on 7 days of a normal July.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00043714.
What are the records for July in Half Moon Bay?
The warmest July temperature on this station's record (since 1939) is 81°F, on July 2, 1970; the coldest is 40°F, on July 8, 1982. The wettest July brought 1.01 in (1974).
The July mean against the 1991-2020 normal of 58.8°F: 2021 58.7°F (−0.1), 2022 57.9°F (−0.9), 2023 56.7°F (−2.1), 2024 58.2°F (−0.6), 2025 58.8°F (at normal), 2026 59.9°F (+1.1). 1 of 6 ran warmer than normal.
| July | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.7°F | −0.1°F | 0.20 in |
| 2022 | 57.9°F | −0.9°F | 0.50 in |
| 2023 | 56.7°F | −2.1°F | 0.14 in |
| 2024 | 58.2°F | −0.6°F | 0.17 in |
| 2025 | 58.8°F | at normal | 0.38 in |
| 2026 | 59.9°F | +1.1°F | 0.20 in |
Source: records: ACIS, station USC00043714; recent months: ACIS, station USC00043714. Records and recent months use complete months only.
How does July in Half Moon Bay 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; Half Moon Bay's is 65°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Half Moon Bay in June64°F by day, 50°F at night
- Half Moon Bay in August66°F by day, 54°F at night
- Half Moon Bay through the yearEvery month, frost dates, records and recent years
- California in JulyThe statewide normal and the warmest and coolest places
- Needles: California's warmest Julynormal high 111°F