Vista weather in September: Vista, California: normal highs, lows, rain and records for September
Vista in September has a normal high of 81°F and a normal low of 61°F, a daily mean of 71°F, falling from 82°F on the 1st to 78°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 27°C and low of 16°C, 4 mm of precipitation in September.
- NOAA stationVista
- Station IDUSC00049378
- Location33.24°N 117.23°W
- Elevation430 ft (131 m)
- From the center3 miles
- Population99,322
- Jan 66° 46°
- Feb 65° 46°
- Mar 67° 48°
- Apr 69° 50°
- May 71° 55°
- Jun 75° 59°
- Jul 79° 62°
- Aug 81° 63°
- Sep 81° 61°
- Oct 76° 56°
- Nov 71° 50°
- Dec 65° 45°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Vista in September?
The normal high is 81°F and the normal low 61°F, for a daily mean of 70.8°F. September is 1.1°F cooler than August and 4.7°F warmer than October. September is the 2nd warmest month of the year in Vista and the 9th wettest. Across the month the normal high falls 4°F, from 82°F on September 1 to 78°F on September 30. From one year to the next September's mean temperature typically moves about 1.9°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 5%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 82°F | 63°F | 2% | 1% |
| September 8 | 82°F | 62°F | 2% | 1% |
| September 15 | 81°F | 61°F | 3% | 1% |
| September 22 | 80°F | 61°F | 4% | 2% |
| September 30 | 78°F | 59°F | 5% | 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 | 82°F | 63°F | 2% | 1% | 12 h 50 min |
| September 2 | 82°F | 63°F | 2% | 1% | 12 h 50 min |
| September 3 | 82°F | 63°F | 2% | 1% | 12 h 50 min |
| September 4 | 82°F | 63°F | 2% | 1% | 12 h 50 min |
| September 5 | 82°F | 62°F | 2% | 1% | 12 h 50 min |
| September 6 | 82°F | 62°F | 2% | 1% | 12 h 40 min |
| September 7 | 82°F | 62°F | 2% | 1% | 12 h 40 min |
| September 8 | 82°F | 62°F | 2% | 1% | 12 h 40 min |
| September 9 | 82°F | 62°F | 2% | 1% | 12 h 40 min |
| September 10 | 82°F | 62°F | 2% | 1% | 12 h 40 min |
| September 11 | 81°F | 62°F | 2% | 1% | 12 h 30 min |
| September 12 | 81°F | 62°F | 2% | 1% | 12 h 30 min |
| September 13 | 81°F | 62°F | 2% | 1% | 12 h 30 min |
| September 14 | 81°F | 62°F | 3% | 1% | 12 h 30 min |
| September 15 | 81°F | 61°F | 3% | 1% | 12 h 30 min |
| September 16 | 81°F | 61°F | 3% | 1% | 12 h 20 min |
| September 17 | 81°F | 61°F | 3% | 1% | 12 h 20 min |
| September 18 | 80°F | 61°F | 3% | 1% | 12 h 20 min |
| September 19 | 80°F | 61°F | 3% | 2% | 12 h 20 min |
| September 20 | 80°F | 61°F | 3% | 2% | 12 h 20 min |
| September 21 | 80°F | 61°F | 3% | 2% | 12 h 10 min |
| September 22 | 80°F | 61°F | 4% | 2% | 12 h 10 min |
| September 23 | 80°F | 60°F | 4% | 2% | 12 h 10 min |
| September 24 | 79°F | 60°F | 4% | 2% | 12 h 10 min |
| September 25 | 79°F | 60°F | 4% | 2% | 12 h 10 min |
| September 26 | 79°F | 60°F | 4% | 2% | 12 h |
| September 27 | 79°F | 60°F | 4% | 2% | 12 h |
| September 28 | 79°F | 60°F | 4% | 2% | 12 h |
| September 29 | 78°F | 59°F | 4% | 2% | 12 h |
| September 30 | 78°F | 59°F | 5% | 2% | 11 h 50 min |
- Normal high
- 81°FSeptember average
- Normal low
- 61°FSeptember average
- Precipitation
- 0.16 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 12 h 50 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 19
- Sunshine
- 91%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00049378; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Vista in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 30 (5%). In all, 0.16 in falls on 1 days of a normal September.
In a normal September in Vista, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00049378.
What are the records for September in Vista?
The warmest September temperature on this station's record (since 1957) is 107°F, on September 24, 1978; the coldest is 46°F, on September 14, 1966. The wettest September brought 2.57 in (1963).
The September mean against the 1991-2020 normal of 70.8°F: 2021 70.5°F (−0.3), 2022 74.9°F (+4.1), 2023 70.3°F (−0.5), 2024 72.0°F (+1.2), 2025 72.8°F (+2.0). 3 of 5 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 70.5°F | −0.3°F | 0.16 in |
| 2022 | 74.9°F | +4.1°F | 0.46 in |
| 2023 | 70.3°F | −0.5°F | 0.32 in |
| 2024 | 72.0°F | +1.2°F | 0.01 in |
| 2025 | 72.8°F | +2.0°F | 0.35 in |
Source: records: ACIS, station USC00049378; recent months: ACIS, station USC00049378. Records and recent months use complete months only.
How does September in Vista 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; Vista's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.