Porterville weather in September: Porterville, California: normal highs, lows, rain and records for September
Porterville in September has a normal high of 92°F and a normal low of 62°F, a daily mean of 77°F, falling from 95°F on the 1st to 89°F by the 30th. Measurable precipitation falls on 1 days in a normal September, 0.06 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 34°C and low of 17°C, 2 mm of precipitation in September.
- NOAA stationPorterville
- Station IDUSC00047077
- Location36.07°N 119.02°W
- Elevation393 ft (120 m)
- Population63,517
- Jan 59° 40°
- Feb 65° 43°
- Mar 71° 47°
- Apr 76° 50°
- May 84° 56°
- Jun 93° 63°
- Jul 98° 68°
- Aug 97° 67°
- Sep 92° 62°
- Oct 82° 53°
- Nov 68° 44°
- Dec 59° 39°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Porterville in September?
The normal high is 92°F and the normal low 62°F, for a daily mean of 77.3°F. September is 4.6°F cooler than August and 9.6°F warmer than October. September is the 4th warmest month of the year in Porterville and the 10th wettest. Across the month the normal high falls 6°F, from 95°F on September 1 to 89°F on September 30. From one year to the next September's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 75°F and 79°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 3%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 95°F | 65°F | 3% | 0% |
| September 8 | 94°F | 64°F | 3% | 0% |
| September 15 | 93°F | 63°F | 3% | 1% |
| September 22 | 91°F | 61°F | 3% | 1% |
| September 30 | 89°F | 59°F | 3% | 1% |
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 | 95°F | 65°F | 3% | 0% | 13 h |
| September 2 | 95°F | 65°F | 3% | 0% | 13 h |
| September 3 | 95°F | 64°F | 3% | 0% | 12 h 50 min |
| September 4 | 94°F | 64°F | 3% | 0% | 12 h 50 min |
| September 5 | 94°F | 64°F | 3% | 0% | 12 h 50 min |
| September 6 | 94°F | 64°F | 3% | 0% | 12 h 50 min |
| September 7 | 94°F | 64°F | 3% | 0% | 12 h 50 min |
| September 8 | 94°F | 64°F | 3% | 0% | 12 h 40 min |
| September 9 | 94°F | 64°F | 3% | 0% | 12 h 40 min |
| September 10 | 94°F | 64°F | 3% | 0% | 12 h 40 min |
| September 11 | 93°F | 63°F | 3% | 0% | 12 h 40 min |
| September 12 | 93°F | 63°F | 3% | 0% | 12 h 30 min |
| September 13 | 93°F | 63°F | 3% | 0% | 12 h 30 min |
| September 14 | 93°F | 63°F | 3% | 0% | 12 h 30 min |
| September 15 | 93°F | 63°F | 3% | 1% | 12 h 30 min |
| September 16 | 93°F | 63°F | 3% | 1% | 12 h 30 min |
| September 17 | 92°F | 62°F | 3% | 1% | 12 h 20 min |
| September 18 | 92°F | 62°F | 3% | 1% | 12 h 20 min |
| September 19 | 92°F | 62°F | 3% | 1% | 12 h 20 min |
| September 20 | 92°F | 62°F | 3% | 1% | 12 h 20 min |
| September 21 | 91°F | 61°F | 3% | 1% | 12 h 10 min |
| September 22 | 91°F | 61°F | 3% | 1% | 12 h 10 min |
| September 23 | 91°F | 61°F | 3% | 1% | 12 h 10 min |
| September 24 | 91°F | 61°F | 3% | 1% | 12 h 10 min |
| September 25 | 90°F | 60°F | 3% | 1% | 12 h 10 min |
| September 26 | 90°F | 60°F | 3% | 1% | 12 h |
| September 27 | 90°F | 60°F | 3% | 1% | 12 h |
| September 28 | 89°F | 60°F | 3% | 1% | 12 h |
| September 29 | 89°F | 59°F | 3% | 1% | 12 h |
| September 30 | 89°F | 59°F | 3% | 1% | 11 h 50 min |
- Normal high
- 92°FSeptember average
- Normal low
- 62°FSeptember average
- Precipitation
- 0.06 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 22
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 30
- Days at 80°F or more
- 29
- Sunshine
- 97%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00047077; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Porterville in September?
On a given September day the chance of 0.01 inch or more is 3% on average, highest around September 29 (3%). In all, 0.06 in falls on 1 days of a normal September.
In a normal September in Porterville, 22 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00047077.
What are the records for September in Porterville?
The warmest September temperature on this station's record (since 1902) is 112°F, on September 18, 1913; the coldest is 37°F, on September 21, 1968. The wettest September brought 3.24 in (1976).
Source: records: ACIS, station USC00047077. Records and recent months use complete months only.
How does September in Porterville 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; Porterville's is 92°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Porterville in August97°F by day, 67°F at night
- Porterville in October82°F by day, 53°F at night
- Porterville 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