North Island Naval Air Station weather in September: North Island Naval Air Station, California: normal highs, lows, rain and records for September
North Island Naval Air Station in September has a normal high of 77°F and a normal low of 65°F, a daily mean of 71°F, falling from 77°F on the 1st to 76°F by the 30th. Measurable precipitation falls on 1 days in a normal September, 0.16 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 25°C and low of 18°C, 4 mm of precipitation in September.
- NOAA stationNorth Island Naval Air Station
- Station IDUSW00093112
- Location32.70°N 117.20°W
- Elevation26 ft (8 m)
- Jan 66° 49°
- Feb 66° 51°
- Mar 67° 53°
- Apr 68° 55°
- May 69° 59°
- Jun 71° 62°
- Jul 74° 65°
- Aug 77° 67°
- Sep 77° 65°
- Oct 75° 60°
- Nov 71° 54°
- Dec 66° 49°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is North Island Naval Air Station in September?
The normal high is 77°F and the normal low 65°F, for a daily mean of 70.9°F. September is 0.7°F cooler than August and 3.6°F warmer than October. September is the 2nd warmest month of the year in North Island Naval Air Station and the 9th wettest. Across the month the normal high falls 1°F, from 77°F on September 1 to 76°F on September 30. From one year to the next September's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Septembers 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 6%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 77°F | 66°F | 2% | 1% |
| September 8 | 77°F | 66°F | 2% | 1% |
| September 15 | 77°F | 65°F | 3% | 1% |
| September 22 | 76°F | 64°F | 4% | 2% |
| September 30 | 76°F | 63°F | 6% | 2% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 77°F | 66°F | 2% | 1% | 12 h 50 min |
| September 2 | 77°F | 66°F | 2% | 1% | 12 h 50 min |
| September 3 | 77°F | 66°F | 2% | 1% | 12 h 50 min |
| September 4 | 77°F | 66°F | 2% | 1% | 12 h 50 min |
| September 5 | 77°F | 66°F | 2% | 1% | 12 h 40 min |
| September 6 | 77°F | 66°F | 2% | 1% | 12 h 40 min |
| September 7 | 77°F | 66°F | 2% | 1% | 12 h 40 min |
| September 8 | 77°F | 66°F | 2% | 1% | 12 h 40 min |
| September 9 | 77°F | 66°F | 3% | 1% | 12 h 40 min |
| September 10 | 77°F | 66°F | 3% | 1% | 12 h 40 min |
| September 11 | 77°F | 66°F | 3% | 1% | 12 h 30 min |
| September 12 | 77°F | 66°F | 3% | 1% | 12 h 30 min |
| September 13 | 77°F | 66°F | 3% | 1% | 12 h 30 min |
| September 14 | 77°F | 66°F | 3% | 1% | 12 h 30 min |
| September 15 | 77°F | 65°F | 3% | 1% | 12 h 30 min |
| September 16 | 77°F | 65°F | 3% | 1% | 12 h 20 min |
| September 17 | 77°F | 65°F | 4% | 1% | 12 h 20 min |
| September 18 | 77°F | 65°F | 4% | 1% | 12 h 20 min |
| September 19 | 77°F | 65°F | 4% | 1% | 12 h 20 min |
| September 20 | 76°F | 65°F | 4% | 1% | 12 h 20 min |
| September 21 | 76°F | 65°F | 4% | 1% | 12 h 10 min |
| September 22 | 76°F | 64°F | 4% | 2% | 12 h 10 min |
| September 23 | 76°F | 64°F | 4% | 2% | 12 h 10 min |
| September 24 | 76°F | 64°F | 5% | 2% | 12 h 10 min |
| September 25 | 76°F | 64°F | 5% | 2% | 12 h 10 min |
| September 26 | 76°F | 64°F | 5% | 2% | 12 h |
| September 27 | 76°F | 64°F | 5% | 2% | 12 h |
| September 28 | 76°F | 64°F | 5% | 2% | 12 h |
| September 29 | 76°F | 63°F | 5% | 2% | 12 h |
| September 30 | 76°F | 63°F | 6% | 2% | 12 h |
- Normal high
- 77°FSeptember average
- Normal low
- 65°FSeptember average
- Precipitation
- 0.16 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 12 h 50 min to 12 hSeptember 1 to September 30
- Days at 70°F or more
- 29
- Days at 80°F or more
- 7
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093112; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in North Island Naval Air Station in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 30 (6%). In all, 0.16 in falls on 1 days of a normal September.
In a normal September in North Island Naval Air Station, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093112.
How humid and windy is North Island Naval Air Station in September?
At 3 p.m. the normal temperature is 73°F with 62% relative humidity and a dew point of 60°F; at 6 a.m. it is 65°F with 80% humidity. The wind averages 6.0 mph, most often from the west-northwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 65°F | 59°F | 80% | 3.2 mph | – |
| 9 a.m. | 71°F | 59°F | 65% | 5.5 mph | 42% |
| noon | 74°F | 59°F | 58% | 10.4 mph | 51% |
| 3 p.m. | 73°F | 60°F | 62% | 10.3 mph | 48% |
| 6 p.m. | 70°F | 60°F | 71% | 7.3 mph | 46% |
| 9 p.m. | 68°F | 60°F | 76% | 4.4 mph | 46% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093112. 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 September in North Island Naval Air Station?
The warmest September temperature on this station's record (since 1945) is 102°F, on September 27, 2010; the coldest is 54°F, on September 26, 1948. The wettest September brought 1.40 in (1963).
The September mean against the 1991-2020 normal of 70.9°F: 2021 71.0°F (+0.1), 2022 74.0°F (+3.1), 2023 70.1°F (−0.8), 2025 71.2°F (+0.3), 2026 74.0°F (+3.1). 4 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.0°F | +0.1°F | 0.01 in |
| 2022 | 74.0°F | +3.1°F | 0.49 in |
| 2023 | 70.1°F | −0.8°F | 0.05 in |
| 2025 | 71.2°F | +0.3°F | – |
| 2026 | 74.0°F | +3.1°F | – |
Source: records: ACIS, station USW00093112; recent months: ACIS, station USW00093112. Records and recent months use complete months only.
How does September in North Island Naval Air Station compare across California?
Across the 219 places PlainClimate covers in California, September normal highs run from 64°F in Eureka to 104°F in Brawley; North Island Naval Air Station's is 77°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- North Island Naval Air Station in August77°F by day, 67°F at night
- North Island Naval Air Station in October75°F by day, 60°F at night
- North Island Naval Air Station through the yearEvery month, frost dates, records and recent years
- California in SeptemberThe statewide normal and the warmest and coolest places
- Brawley: California's warmest Septembernormal high 104°F