Lompoc weather in September: Lompoc, California: normal highs, lows, rain and records for September
Lompoc in September has a normal high of 75°F and a normal low of 55°F, a daily mean of 65°F, holding near 75°F all month. Measurable precipitation falls on 1 days in a normal September, 0.05 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 24°C and low of 13°C, 1 mm of precipitation in September.
- NOAA stationLompoc
- Station IDUSC00045064
- Location34.65°N 120.45°W
- Elevation75 ft (23 m)
- Population43,594
- Jan 65° 43°
- Feb 65° 44°
- Mar 67° 46°
- Apr 68° 47°
- May 69° 51°
- Jun 71° 53°
- Jul 73° 56°
- Aug 73° 56°
- Sep 75° 55°
- Oct 74° 51°
- Nov 70° 46°
- Dec 63° 42°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Lompoc in September?
The normal high is 75°F and the normal low 55°F, for a daily mean of 64.8°F. September is 0.2°F warmer than August and 2.2°F warmer than October. September is the warmest month of the year in Lompoc and the 10th wettest. Across the month the normal high rises 1°F, from 74°F on September 1 to 75°F on September 30. From one year to the next September's mean temperature typically moves about 2.2°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 63°F and 67°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 | 74°F | 56°F | 2% | 0% |
| September 8 | 75°F | 56°F | 2% | 1% |
| September 15 | 75°F | 55°F | 3% | 1% |
| September 22 | 75°F | 54°F | 4% | 1% |
| September 30 | 75°F | 53°F | 5% | 2% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 15, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 74°F | 56°F | 2% | 0% | 13 h |
| September 2 | 74°F | 56°F | 2% | 0% | 12 h 50 min |
| September 3 | 74°F | 56°F | 2% | 0% | 12 h 50 min |
| September 4 | 75°F | 56°F | 2% | 1% | 12 h 50 min |
| September 5 | 75°F | 56°F | 2% | 1% | 12 h 50 min |
| September 6 | 75°F | 56°F | 2% | 1% | 12 h 50 min |
| September 7 | 75°F | 56°F | 2% | 1% | 12 h 40 min |
| September 8 | 75°F | 56°F | 2% | 1% | 12 h 40 min |
| September 9 | 75°F | 56°F | 2% | 1% | 12 h 40 min |
| September 10 | 75°F | 56°F | 2% | 1% | 12 h 40 min |
| September 11 | 75°F | 55°F | 2% | 1% | 12 h 40 min |
| September 12 | 75°F | 55°F | 2% | 1% | 12 h 30 min |
| September 13 | 75°F | 55°F | 2% | 1% | 12 h 30 min |
| September 14 | 75°F | 55°F | 3% | 1% | 12 h 30 min |
| September 15 | 75°F | 55°F | 3% | 1% | 12 h 30 min |
| September 16 | 75°F | 55°F | 3% | 1% | 12 h 20 min |
| September 17 | 75°F | 55°F | 3% | 1% | 12 h 20 min |
| September 18 | 75°F | 55°F | 3% | 1% | 12 h 20 min |
| September 19 | 75°F | 55°F | 3% | 1% | 12 h 20 min |
| September 20 | 75°F | 55°F | 3% | 1% | 12 h 20 min |
| September 21 | 75°F | 55°F | 3% | 1% | 12 h 10 min |
| September 22 | 75°F | 54°F | 4% | 1% | 12 h 10 min |
| September 23 | 75°F | 54°F | 4% | 1% | 12 h 10 min |
| September 24 | 75°F | 54°F | 4% | 1% | 12 h 10 min |
| September 25 | 75°F | 54°F | 4% | 1% | 12 h 10 min |
| September 26 | 75°F | 54°F | 4% | 1% | 12 h |
| September 27 | 75°F | 54°F | 4% | 2% | 12 h |
| September 28 | 75°F | 54°F | 5% | 2% | 12 h |
| September 29 | 75°F | 54°F | 5% | 2% | 12 h |
| September 30 | 75°F | 53°F | 5% | 2% | 11 h 50 min |
- Normal high
- 75°FSeptember average
- Normal low
- 55°FSeptember average
- Precipitation
- 0.05 inmonth total
- Days with precipitation
- 10.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 6
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00045064; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Lompoc 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, 0.05 in falls on 1 days of a normal September.
In a normal September in Lompoc, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00045064.
What are the records for September in Lompoc?
The warmest September temperature on this station's record (since 1917) is 106°F, on September 24, 1978; the coldest is 36°F, on September 30, 1950. The wettest September brought 2.67 in (1976).
The September mean against the 1991-2020 normal of 64.8°F: 2021 64.1°F (−0.7), 2022 68.0°F (+3.2), 2023 64.2°F (−0.6), 2024 62.5°F (−2.3), 2025 68.0°F (+3.2), 2026 66.7°F (+1.9). 3 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.1°F | −0.7°F | 0.00 in |
| 2022 | 68.0°F | +3.2°F | 2.03 in |
| 2023 | 64.2°F | −0.6°F | 0.35 in |
| 2024 | 62.5°F | −2.3°F | 0.31 in |
| 2025 | 68.0°F | +3.2°F | 0.41 in |
| 2026 | 66.7°F | +1.9°F | 0.00 in |
Source: records: ACIS, station USC00045064; recent months: ACIS, station USC00045064. Records and recent months use complete months only.
How does September in Lompoc 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; Lompoc's is 75°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.