Quillayute State Airport weather in September: Quillayute State Airport, Washington: normal highs, lows, rain and records for September
Quillayute State Airport in September has a normal high of 67°F and a normal low of 48°F, a daily mean of 57°F, falling from 69°F on the 1st to 64°F by the 30th. Measurable precipitation falls on 11 days in a normal September, 4.56 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 19°C and low of 9°C, 116 mm of precipitation in September.
- NOAA stationQuillayute State Airport
- Station IDUSW00094240
- Location47.94°N 124.56°W
- Elevation185 ft (56 m)
- Jan 48° 36°
- Feb 49° 35°
- Mar 51° 37°
- Apr 55° 39°
- May 60° 43°
- Jun 63° 48°
- Jul 68° 51°
- Aug 69° 51°
- Sep 67° 48°
- Oct 59° 42°
- Nov 51° 38°
- Dec 47° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Quillayute State Airport in September?
The normal high is 67°F and the normal low 48°F, for a daily mean of 57.1°F. September is 2.9°F cooler than August and 6.5°F warmer than October. September is the 3rd warmest month of the year in Quillayute State Airport and the 8th wettest. Across the month the normal high falls 5°F, from 69°F on September 1 to 64°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 55°F and 59°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 46%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 69°F | 50°F | 34% | 18% |
| September 8 | 68°F | 49°F | 36% | 21% |
| September 15 | 67°F | 48°F | 39% | 24% |
| September 22 | 66°F | 47°F | 41% | 28% |
| September 30 | 64°F | 45°F | 46% | 33% |
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 | 69°F | 50°F | 34% | 18% | 13 h 30 min |
| September 2 | 69°F | 50°F | 34% | 18% | 13 h 20 min |
| September 3 | 69°F | 49°F | 34% | 19% | 13 h 20 min |
| September 4 | 68°F | 49°F | 34% | 19% | 13 h 20 min |
| September 5 | 68°F | 49°F | 35% | 19% | 13 h 10 min |
| September 6 | 68°F | 49°F | 35% | 20% | 13 h 10 min |
| September 7 | 68°F | 49°F | 35% | 20% | 13 h 10 min |
| September 8 | 68°F | 49°F | 36% | 21% | 13 h |
| September 9 | 68°F | 49°F | 36% | 21% | 13 h |
| September 10 | 68°F | 48°F | 36% | 22% | 13 h |
| September 11 | 68°F | 48°F | 37% | 22% | 12 h 50 min |
| September 12 | 68°F | 48°F | 37% | 23% | 12 h 50 min |
| September 13 | 68°F | 48°F | 38% | 23% | 12 h 50 min |
| September 14 | 67°F | 48°F | 38% | 24% | 12 h 40 min |
| September 15 | 67°F | 48°F | 39% | 24% | 12 h 40 min |
| September 16 | 67°F | 48°F | 39% | 25% | 12 h 40 min |
| September 17 | 67°F | 47°F | 39% | 25% | 12 h 30 min |
| September 18 | 67°F | 47°F | 40% | 26% | 12 h 30 min |
| September 19 | 66°F | 47°F | 40% | 26% | 12 h 30 min |
| September 20 | 66°F | 47°F | 41% | 27% | 12 h 20 min |
| September 21 | 66°F | 47°F | 41% | 27% | 12 h 20 min |
| September 22 | 66°F | 47°F | 41% | 28% | 12 h 20 min |
| September 23 | 66°F | 46°F | 42% | 28% | 12 h 10 min |
| September 24 | 65°F | 46°F | 42% | 29% | 12 h 10 min |
| September 25 | 65°F | 46°F | 43% | 29% | 12 h 10 min |
| September 26 | 65°F | 46°F | 43% | 30% | 12 h |
| September 27 | 64°F | 46°F | 44% | 31% | 12 h |
| September 28 | 64°F | 45°F | 44% | 31% | 11 h 50 min |
| September 29 | 64°F | 45°F | 45% | 32% | 11 h 50 min |
| September 30 | 64°F | 45°F | 46% | 33% | 11 h 50 min |
- Normal high
- 67°FSeptember average
- Normal low
- 48°FSeptember average
- Precipitation
- 4.56 inmonth total
- Days with precipitation
- 110.01 inch or more
- Daylight
- 13 h 30 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 8
- Days at 80°F or more
- 2
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094240; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Quillayute State Airport in September?
On a given September day the chance of 0.01 inch or more is 39% on average, highest around September 30 (46%). In all, 4.56 in falls on 11 days of a normal September, 1 of them with an inch or more.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094240.
How humid and windy is Quillayute State Airport in September?
At 3 p.m. the normal temperature is 62°F with 67% relative humidity and a dew point of 51°F; at 6 a.m. it is 48°F with 93% humidity. The wind averages 4.3 mph, most often from the west-southwest in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 48°F | 46°F | 93% | 3.0 mph | – |
| 9 a.m. | 55°F | 50°F | 84% | 3.9 mph | 43% |
| noon | 61°F | 51°F | 69% | 6.9 mph | 45% |
| 3 p.m. | 62°F | 51°F | 67% | 7.4 mph | 54% |
| 6 p.m. | 56°F | 50°F | 79% | 4.1 mph | 54% |
| 9 p.m. | 52°F | 49°F | 89% | 3.0 mph | 53% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094240. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Quillayute State Airport?
The warmest September temperature on this station's record (since 1966) is 97°F, on September 2, 1988; the coldest is 28°F, on September 27, 1972. The wettest September brought 12.82 in (1997).
The September mean against the 1991-2020 normal of 57.1°F: 2021 57.1°F (at normal), 2022 60.2°F (+3.1), 2023 59.8°F (+2.7), 2024 59.6°F (+2.5), 2025 58.8°F (+1.7), 2026 56.5°F (−0.6). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.1°F | at normal | 9.68 in |
| 2022 | 60.2°F | +3.1°F | 1.12 in |
| 2023 | 59.8°F | +2.7°F | 5.52 in |
| 2024 | 59.6°F | +2.5°F | 4.28 in |
| 2025 | 58.8°F | +1.7°F | – |
| 2026 | 56.5°F | −0.6°F | 7.48 in |
Source: records: ACIS, station USW00094240; recent months: ACIS, station USW00094240. Records and recent months use complete months only.
How does September in Quillayute State Airport 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; Quillayute State Airport's is 67°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Quillayute State Airport in August69°F by day, 51°F at night
- Quillayute State Airport in October59°F by day, 42°F at night
- Quillayute State Airport 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