Moses Lake weather in September: Moses Lake, Washington: normal highs, lows, rain and records for September
Moses Lake in September has a normal high of 79°F and a normal low of 47°F, a daily mean of 63°F, falling from 84°F on the 1st to 72°F by the 30th. Measurable precipitation falls on 3 days in a normal September, 0.26 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 26°C and low of 8°C, 7 mm of precipitation in September.
- NOAA stationMoses Lake Grant County Airport
- Station IDUSW00024110
- Location47.21°N 119.32°W
- Elevation1,196 ft (365 m)
- Population26,969
- Jan 36° 24°
- Feb 44° 27°
- Mar 55° 32°
- Apr 64° 37°
- May 74° 45°
- Jun 80° 52°
- Jul 90° 57°
- Aug 88° 56°
- Sep 79° 47°
- Oct 63° 37°
- Nov 46° 29°
- Dec 36° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Moses Lake in September?
The normal high is 79°F and the normal low 47°F, for a daily mean of 62.8°F. September is 9.4°F cooler than August and 12.9°F warmer than October. September is the 4th warmest month of the year in Moses Lake and the 10th wettest. Across the month the normal high falls 12°F, from 84°F on September 1 to 72°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 61°F and 65°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 16%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 84°F | 52°F | 7% | 2% |
| September 8 | 82°F | 50°F | 8% | 2% |
| September 15 | 79°F | 47°F | 10% | 2% |
| September 22 | 76°F | 45°F | 13% | 3% |
| September 30 | 72°F | 42°F | 16% | 4% |
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 | 84°F | 52°F | 7% | 2% | 13 h 30 min |
| September 2 | 84°F | 51°F | 8% | 2% | 13 h 20 min |
| September 3 | 84°F | 51°F | 8% | 2% | 13 h 20 min |
| September 4 | 83°F | 51°F | 8% | 2% | 13 h 20 min |
| September 5 | 83°F | 51°F | 8% | 2% | 13 h 10 min |
| September 6 | 83°F | 50°F | 8% | 2% | 13 h 10 min |
| September 7 | 82°F | 50°F | 8% | 2% | 13 h 10 min |
| September 8 | 82°F | 50°F | 8% | 2% | 13 h |
| September 9 | 82°F | 49°F | 9% | 2% | 13 h |
| September 10 | 81°F | 49°F | 9% | 2% | 13 h |
| September 11 | 81°F | 49°F | 9% | 2% | 12 h 50 min |
| September 12 | 80°F | 48°F | 9% | 2% | 12 h 50 min |
| September 13 | 80°F | 48°F | 10% | 2% | 12 h 50 min |
| September 14 | 80°F | 48°F | 10% | 2% | 12 h 40 min |
| September 15 | 79°F | 47°F | 10% | 2% | 12 h 40 min |
| September 16 | 79°F | 47°F | 11% | 2% | 12 h 40 min |
| September 17 | 78°F | 47°F | 11% | 2% | 12 h 30 min |
| September 18 | 78°F | 46°F | 11% | 3% | 12 h 30 min |
| September 19 | 78°F | 46°F | 12% | 3% | 12 h 30 min |
| September 20 | 77°F | 46°F | 12% | 3% | 12 h 20 min |
| September 21 | 77°F | 45°F | 12% | 3% | 12 h 20 min |
| September 22 | 76°F | 45°F | 13% | 3% | 12 h 20 min |
| September 23 | 76°F | 45°F | 13% | 3% | 12 h 10 min |
| September 24 | 75°F | 44°F | 13% | 3% | 12 h 10 min |
| September 25 | 75°F | 44°F | 14% | 3% | 12 h 10 min |
| September 26 | 74°F | 44°F | 14% | 3% | 12 h |
| September 27 | 74°F | 43°F | 14% | 3% | 12 h |
| September 28 | 73°F | 43°F | 15% | 4% | 12 h |
| September 29 | 73°F | 43°F | 15% | 4% | 11 h 50 min |
| September 30 | 72°F | 42°F | 16% | 4% | 11 h 50 min |
- Normal high
- 79°FSeptember average
- Normal low
- 47°FSeptember average
- Precipitation
- 0.26 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 13 h 30 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 26
- Days at 80°F or more
- 14
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024110; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Moses Lake in September?
On a given September day the chance of 0.01 inch or more is 11% on average, highest around September 30 (16%). In all, 0.26 in falls on 3 days of a normal September.
In a normal September in Moses Lake, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024110.
What are the records for September in Moses Lake?
The warmest September temperature on this station's record (since 1949) is 100°F, on September 2, 1950; the coldest is 27°F, on September 23, 2000. The wettest September brought 2.20 in (1959).
The September mean against the 1991-2020 normal of 62.8°F: 2021 62.8°F (at normal), 2022 66.1°F (+3.3), 2023 63.4°F (+0.6), 2024 67.2°F (+4.4), 2025 68.7°F (+5.9), 2026 60.8°F (−2.0). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.8°F | at normal | 0.87 in |
| 2022 | 66.1°F | +3.3°F | 0.11 in |
| 2023 | 63.4°F | +0.6°F | 0.23 in |
| 2024 | 67.2°F | +4.4°F | 0.00 in |
| 2025 | 68.7°F | +5.9°F | 0.13 in |
| 2026 | 60.8°F | −2.0°F | 0.43 in |
Source: records: ACIS, station USW00024110; recent months: ACIS, station USW00024110. Records and recent months use complete months only.
How does September in Moses Lake compare across Washington?
Across the 96 places PlainClimate covers in Washington, September normal highs run from 66°F in Coupeville to 81°F in Pasco; Moses Lake's is 79°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Moses Lake in August88°F by day, 56°F at night
- Moses Lake in October63°F by day, 37°F at night
- Moses Lake through the yearEvery month, frost dates, records and recent years
- Washington in SeptemberThe statewide normal and the warmest and coolest places
- Pasco: Washington's warmest Septembernormal high 81°F