Laramie weather in September: Laramie, Wyoming: normal highs, lows, rain and records for September
Laramie in September has a normal high of 70°F and a normal low of 39°F, a daily mean of 54°F, falling from 76°F on the 1st to 64°F by the 30th. Measurable precipitation falls on 7 days in a normal September, 1.11 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 4°C, 28 mm of precipitation in September.
- NOAA stationLaramie Regional Airport
- Station IDUSW00024022
- Location41.31°N 105.67°W
- Elevation7,266 ft (2,215 m)
- Population32,957
- Jan 33° 10°
- Feb 36° 12°
- Mar 45° 19°
- Apr 51° 25°
- May 62° 33°
- Jun 74° 42°
- Jul 81° 49°
- Aug 79° 47°
- Sep 70° 39°
- Oct 56° 28°
- Nov 43° 18°
- Dec 33° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Laramie in September?
The normal high is 70°F and the normal low 39°F, for a daily mean of 54.3°F. September is 8.5°F cooler than August and 12.4°F warmer than October. September is the 4th warmest month of the year in Laramie and the 5th wettest. Across the month the normal high falls 12°F, from 76°F on September 1 to 64°F on September 30. From one year to the next September's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 52°F and 57°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 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 76°F | 43°F | 27% | 11% |
| September 8 | 73°F | 41°F | 27% | 11% |
| September 15 | 71°F | 39°F | 26% | 11% |
| September 22 | 68°F | 37°F | 24% | 10% |
| September 30 | 64°F | 34°F | 22% | 9% |
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 | 76°F | 43°F | 27% | 11% | 13 h 10 min |
| September 2 | 75°F | 43°F | 27% | 11% | 13 h 10 min |
| September 3 | 75°F | 42°F | 27% | 11% | 13 h |
| September 4 | 75°F | 42°F | 27% | 11% | 13 h |
| September 5 | 74°F | 42°F | 27% | 11% | 13 h |
| September 6 | 74°F | 42°F | 27% | 11% | 13 h |
| September 7 | 74°F | 41°F | 27% | 11% | 12 h 50 min |
| September 8 | 73°F | 41°F | 27% | 11% | 12 h 50 min |
| September 9 | 73°F | 41°F | 27% | 11% | 12 h 50 min |
| September 10 | 73°F | 40°F | 26% | 11% | 12 h 50 min |
| September 11 | 72°F | 40°F | 26% | 11% | 12 h 40 min |
| September 12 | 72°F | 40°F | 26% | 11% | 12 h 40 min |
| September 13 | 72°F | 40°F | 26% | 11% | 12 h 40 min |
| September 14 | 71°F | 39°F | 26% | 11% | 12 h 40 min |
| September 15 | 71°F | 39°F | 26% | 11% | 12 h 30 min |
| September 16 | 70°F | 39°F | 25% | 11% | 12 h 30 min |
| September 17 | 70°F | 38°F | 25% | 11% | 12 h 30 min |
| September 18 | 69°F | 38°F | 25% | 11% | 12 h 20 min |
| September 19 | 69°F | 38°F | 25% | 10% | 12 h 20 min |
| September 20 | 69°F | 37°F | 25% | 10% | 12 h 20 min |
| September 21 | 68°F | 37°F | 24% | 10% | 12 h 20 min |
| September 22 | 68°F | 37°F | 24% | 10% | 12 h 10 min |
| September 23 | 67°F | 36°F | 24% | 10% | 12 h 10 min |
| September 24 | 67°F | 36°F | 24% | 10% | 12 h 10 min |
| September 25 | 66°F | 35°F | 23% | 10% | 12 h 10 min |
| September 26 | 66°F | 35°F | 23% | 10% | 12 h |
| September 27 | 65°F | 35°F | 23% | 10% | 12 h |
| September 28 | 65°F | 34°F | 23% | 10% | 12 h |
| September 29 | 64°F | 34°F | 23% | 9% | 11 h 50 min |
| September 30 | 64°F | 34°F | 22% | 9% | 11 h 50 min |
- Normal high
- 70°FSeptember average
- Normal low
- 39°FSeptember average
- Precipitation
- 1.11 inmonth total
- Days with precipitation
- 70.01 inch or more
- Nights at 32°F or colder
- 6
- 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
- 4
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024022; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Laramie in September?
On a given September day the chance of 0.01 inch or more is 25% on average, highest around September 1 (27%). In all, 1.11 in falls on 7 days of a normal September.
In a normal September in Laramie, 6 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024022.
How humid and windy is Laramie 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 38°F with 68% humidity. The wind averages 11.2 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 38°F | 28°F | 68% | 8.8 mph | 74% |
| 9 a.m. | 52°F | 30°F | 43% | 11.3 mph | 75% |
| noon | 60°F | 28°F | 29% | 14.2 mph | 69% |
| 3 p.m. | 61°F | 27°F | 27% | 15.6 mph | 64% |
| 6 p.m. | 53°F | 29°F | 40% | 11.0 mph | 68% |
| 9 p.m. | 45°F | 30°F | 56% | 10.0 mph | 73% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024022. 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 Laramie?
The warmest September temperature on this station's record (since 1948) is 91°F, on September 5, 2020; the coldest is −2°F, on September 30, 1985. The wettest September brought 3.05 in (2013); the snowiest, 16.0 inches (1965).
The September mean against the 1991-2020 normal of 54.3°F: 2021 57.6°F (+3.3), 2022 58.6°F (+4.4), 2023 57.0°F (+2.7), 2024 60.0°F (+5.7), 2025 55.8°F (+1.5), 2026 59.5°F (+5.2). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.6°F | +3.3°F | 0.72 in |
| 2022 | 58.6°F | +4.4°F | 0.57 in |
| 2023 | 57.0°F | +2.7°F | 0.31 in |
| 2024 | 60.0°F | +5.7°F | 0.50 in |
| 2025 | 55.8°F | +1.5°F | 2.13 in |
| 2026 | 59.5°F | +5.2°F | 0.43 in |
Source: records: ACIS, station USW00024022; recent months: ACIS, station USW00024022. Records and recent months use complete months only.
How does September in Laramie 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; Laramie's is 70°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.