Cle Elum weather in September: Cle Elum, Washington: normal highs, lows, rain and records for September
Cle Elum in September has a normal high of 73°F and a normal low of 43°F, a daily mean of 58°F, falling from 78°F on the 1st to 67°F by the 30th. The month brings 0.90 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 23°C and low of 6°C, 23 mm of precipitation in September.
- NOAA stationCle Elum
- Station IDUSC00451504
- Location47.19°N 120.91°W
- Elevation1,900 ft (579 m)
- From the center2 miles
- Population2,276
- Jan 35° 22°
- Feb 41° 24°
- Mar 49° 28°
- Apr 57° 33°
- May 66° 40°
- Jun 72° 47°
- Jul 81° 53°
- Aug 81° 51°
- Sep 73° 43°
- Oct 58° 34°
- Nov 43° 28°
- Dec 34° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Cle Elum in September?
The normal high is 73°F and the normal low 43°F, for a daily mean of 57.8°F. September is 8.5°F cooler than August and 11.9°F warmer than October. September is the 4th warmest month of the year in Cle Elum and the 10th wettest. Across the month the normal high falls 11°F, from 78°F on September 1 to 67°F on September 30. From one year to the next September's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 56°F and 60°F.
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 78°F | 47°F | – | – |
| September 8 | 76°F | 45°F | – | – |
| September 15 | 74°F | 43°F | – | – |
| September 22 | 71°F | 41°F | – | – |
| September 30 | 67°F | 38°F | – | – |
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 | 78°F | 47°F | – | – | 13 h 20 min |
| September 2 | 78°F | 47°F | – | – | 13 h 20 min |
| September 3 | 77°F | 47°F | – | – | 13 h 20 min |
| September 4 | 77°F | 46°F | – | – | 13 h 20 min |
| September 5 | 77°F | 46°F | – | – | 13 h 10 min |
| September 6 | 76°F | 46°F | – | – | 13 h 10 min |
| September 7 | 76°F | 45°F | – | – | 13 h 10 min |
| September 8 | 76°F | 45°F | – | – | 13 h |
| September 9 | 76°F | 45°F | – | – | 13 h |
| September 10 | 75°F | 44°F | – | – | 13 h |
| September 11 | 75°F | 44°F | – | – | 12 h 50 min |
| September 12 | 75°F | 44°F | – | – | 12 h 50 min |
| September 13 | 74°F | 44°F | – | – | 12 h 50 min |
| September 14 | 74°F | 43°F | – | – | 12 h 40 min |
| September 15 | 74°F | 43°F | – | – | 12 h 40 min |
| September 16 | 73°F | 43°F | – | – | 12 h 40 min |
| September 17 | 73°F | 42°F | – | – | 12 h 30 min |
| September 18 | 72°F | 42°F | – | – | 12 h 30 min |
| September 19 | 72°F | 42°F | – | – | 12 h 30 min |
| September 20 | 72°F | 41°F | – | – | 12 h 20 min |
| September 21 | 71°F | 41°F | – | – | 12 h 20 min |
| September 22 | 71°F | 41°F | – | – | 12 h 20 min |
| September 23 | 70°F | 40°F | – | – | 12 h 10 min |
| September 24 | 70°F | 40°F | – | – | 12 h 10 min |
| September 25 | 69°F | 40°F | – | – | 12 h 10 min |
| September 26 | 69°F | 40°F | – | – | 12 h |
| September 27 | 68°F | 39°F | – | – | 12 h |
| September 28 | 68°F | 39°F | – | – | 12 h |
| September 29 | 67°F | 39°F | – | – | 11 h 50 min |
| September 30 | 67°F | 38°F | – | – | 11 h 50 min |
- Normal high
- 73°FSeptember average
- Normal low
- 43°FSeptember average
- Precipitation
- 0.90 inmonth total
- Days at 90°F or more
- 1
- Nights at 32°F or colder
- 2
- Daylight
- 13 h 20 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 19
- Days at 80°F or more
- 8
- Sunshine
- 79%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00451504; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Cle Elum in September?
In a normal September in Cle Elum, 1 days reach 90°F and 2 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00451504.
What are the records for September in Cle Elum?
The warmest September temperature on this station's record (since 1899) is 99°F, on September 4, 2025; the coldest is 12°F, on September 26, 1926. The wettest September brought 3.33 in (2013).
The September mean against the 1991-2020 normal of 57.8°F: 2021 56.9°F (−0.9), 2022 60.6°F (+2.8), 2023 58.2°F (+0.4), 2024 62.7°F (+4.9), 2025 64.0°F (+6.2), 2026 55.4°F (−2.4). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.9°F | −0.9°F | 0.47 in |
| 2022 | 60.6°F | +2.8°F | 0.11 in |
| 2023 | 58.2°F | +0.4°F | 0.74 in |
| 2024 | 62.7°F | +4.9°F | 0.11 in |
| 2025 | 64.0°F | +6.2°F | 0.38 in |
| 2026 | 55.4°F | −2.4°F | – |
Source: records: ACIS, station USC00451504; recent months: ACIS, station USC00451504. Records and recent months use complete months only.
How does September in Cle Elum 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; Cle Elum's is 73°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.