Big Piney weather in September: Big Piney, Wyoming: normal highs, lows, rain and records for September
Big Piney in September has a normal high of 70°F and a normal low of 32°F, a daily mean of 51°F, falling from 75°F on the 1st to 63°F by the 30th. Measurable precipitation falls on 6 days in a normal September, 0.64 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 0°C, 16 mm of precipitation in September.
- NOAA stationBig Piney Marbleton Airport
- Station IDUSW00024164
- Location42.58°N 110.11°W
- Elevation6,970 ft (2,125 m)
- Population390
- Jan 27° -3°
- Feb 30° 0°
- Mar 41° 13°
- Apr 52° 21°
- May 62° 29°
- Jun 72° 36°
- Jul 82° 42°
- Aug 80° 40°
- Sep 70° 32°
- Oct 55° 21°
- Nov 39° 9°
- Dec 28° -2°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Big Piney in September?
The normal high is 70°F and the normal low 32°F, for a daily mean of 50.8°F. September is 9.3°F cooler than August and 12.6°F warmer than October. September is the 4th warmest month of the year in Big Piney and the 6th wettest. Across the month the normal high falls 12°F, from 75°F on September 1 to 63°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 49°F and 53°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 21%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 75°F | 36°F | 20% | 8% |
| September 8 | 73°F | 34°F | 21% | 9% |
| September 15 | 70°F | 32°F | 21% | 9% |
| September 22 | 67°F | 30°F | 20% | 9% |
| September 30 | 63°F | 27°F | 19% | 8% |
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 | 75°F | 36°F | 20% | 8% | 13 h 10 min |
| September 2 | 75°F | 36°F | 20% | 8% | 13 h 10 min |
| September 3 | 75°F | 36°F | 20% | 8% | 13 h 10 min |
| September 4 | 74°F | 35°F | 20% | 8% | 13 h |
| September 5 | 74°F | 35°F | 20% | 8% | 13 h |
| September 6 | 74°F | 35°F | 20% | 8% | 13 h |
| September 7 | 73°F | 34°F | 20% | 9% | 13 h |
| September 8 | 73°F | 34°F | 21% | 9% | 12 h 50 min |
| September 9 | 73°F | 34°F | 21% | 9% | 12 h 50 min |
| September 10 | 72°F | 34°F | 21% | 9% | 12 h 50 min |
| September 11 | 72°F | 33°F | 21% | 9% | 12 h 50 min |
| September 12 | 71°F | 33°F | 21% | 9% | 12 h 40 min |
| September 13 | 71°F | 33°F | 21% | 9% | 12 h 40 min |
| September 14 | 71°F | 32°F | 21% | 9% | 12 h 40 min |
| September 15 | 70°F | 32°F | 21% | 9% | 12 h 30 min |
| September 16 | 70°F | 32°F | 21% | 9% | 12 h 30 min |
| September 17 | 69°F | 31°F | 21% | 9% | 12 h 30 min |
| September 18 | 69°F | 31°F | 21% | 9% | 12 h 30 min |
| September 19 | 68°F | 31°F | 21% | 9% | 12 h 20 min |
| September 20 | 68°F | 31°F | 20% | 9% | 12 h 20 min |
| September 21 | 68°F | 30°F | 20% | 9% | 12 h 20 min |
| September 22 | 67°F | 30°F | 20% | 9% | 12 h 10 min |
| September 23 | 67°F | 30°F | 20% | 9% | 12 h 10 min |
| September 24 | 66°F | 29°F | 20% | 9% | 12 h 10 min |
| September 25 | 66°F | 29°F | 20% | 8% | 12 h 10 min |
| September 26 | 65°F | 29°F | 20% | 8% | 12 h |
| September 27 | 65°F | 28°F | 19% | 8% | 12 h |
| September 28 | 64°F | 28°F | 19% | 8% | 12 h |
| September 29 | 64°F | 28°F | 19% | 8% | 11 h 50 min |
| September 30 | 63°F | 27°F | 19% | 8% | 11 h 50 min |
- Normal high
- 70°FSeptember average
- Normal low
- 32°FSeptember average
- Precipitation
- 0.64 inmonth total
- Days with precipitation
- 60.01 inch or more
- Nights at 32°F or colder
- 15
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 18
- Days at 80°F or more
- 5
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024164; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Big Piney in September?
On a given September day the chance of 0.01 inch or more is 20% on average, highest around September 13 (21%). In all, 0.64 in falls on 6 days of a normal September.
In a normal September in Big Piney, 15 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024164.
How humid and windy is Big Piney in September?
At 3 p.m. the normal temperature is 61°F with 27% relative humidity and a dew point of 27°F; at 6 a.m. it is 32°F with 75% humidity. The wind averages 6.5 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 32°F | 25°F | 75% | 3.8 mph | – |
| 9 a.m. | 45°F | 29°F | 54% | 4.2 mph | – |
| noon | 58°F | 29°F | 33% | 8.5 mph | – |
| 3 p.m. | 61°F | 27°F | 27% | 11.1 mph | – |
| 6 p.m. | 54°F | 28°F | 37% | 8.8 mph | – |
| 9 p.m. | 43°F | 27°F | 53% | 6.8 mph | – |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024164. 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 Big Piney?
The warmest September temperature on this station's record (since 1998) is 91°F, on September 5, 2020; the coldest is 15°F, on September 29, 1999. The wettest September brought 1.72 in (2017).
The September mean against the 1991-2020 normal of 50.8°F: 2021 52.7°F (+1.9), 2022 55.8°F (+5.0), 2023 52.4°F (+1.6), 2024 54.1°F (+3.3), 2025 54.8°F (+4.0), 2026 54.1°F (+3.4). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 52.7°F | +1.9°F | 0.29 in |
| 2022 | 55.8°F | +5.0°F | 1.60 in |
| 2023 | 52.4°F | +1.6°F | 1.31 in |
| 2024 | 54.1°F | +3.3°F | 0.29 in |
| 2025 | 54.8°F | +4.0°F | 0.51 in |
| 2026 | 54.1°F | +3.4°F | 1.23 in |
Source: records: ACIS, station USW00024164; recent months: ACIS, station USW00024164. Records and recent months use complete months only.
How does September in Big Piney compare across Wyoming?
Across the 71 places PlainClimate covers in Wyoming, September normal highs run from 65°F in Sundance to 81°F in Yoder; Big Piney's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.