Reno weather in September: Reno, Nevada: normal highs, lows, rain and records for September
Reno in September has a normal high of 84°F and a normal low of 50°F, a daily mean of 67°F, falling from 89°F on the 1st to 78°F by the 30th. Measurable precipitation falls on 2 days in a normal September, 0.21 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 10°C, 5 mm of precipitation in September.
- NOAA stationReno Airport
- Station IDUSW00023185
- Location39.48°N 119.77°W
- Elevation4,410 ft (1,344 m)
- From the center6 miles
- Population281,714
- Jan 48° 26°
- Feb 52° 29°
- Mar 59° 34°
- Apr 65° 39°
- May 74° 47°
- Jun 85° 54°
- Jul 94° 60°
- Aug 92° 58°
- Sep 84° 50°
- Oct 70° 40°
- Nov 57° 31°
- Dec 47° 26°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Reno in September?
The normal high is 84°F and the normal low 50°F, for a daily mean of 67.0°F. September is 8.1°F cooler than August and 11.9°F warmer than October. September is the 4th warmest month of the year in Reno and the 11th wettest. Across the month the normal high falls 11°F, from 89°F on September 1 to 78°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 65°F and 69°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 8%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 89°F | 55°F | 5% | 2% |
| September 8 | 87°F | 53°F | 6% | 2% |
| September 15 | 84°F | 51°F | 7% | 2% |
| September 22 | 81°F | 48°F | 8% | 3% |
| September 30 | 78°F | 46°F | 8% | 3% |
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 | 89°F | 55°F | 5% | 2% | 13 h 10 min |
| September 2 | 89°F | 54°F | 5% | 2% | 13 h |
| September 3 | 88°F | 54°F | 5% | 2% | 13 h |
| September 4 | 88°F | 54°F | 5% | 2% | 13 h |
| September 5 | 88°F | 53°F | 6% | 2% | 13 h |
| September 6 | 87°F | 53°F | 6% | 2% | 12 h 50 min |
| September 7 | 87°F | 53°F | 6% | 2% | 12 h 50 min |
| September 8 | 87°F | 53°F | 6% | 2% | 12 h 50 min |
| September 9 | 86°F | 52°F | 6% | 2% | 12 h 50 min |
| September 10 | 86°F | 52°F | 6% | 2% | 12 h 40 min |
| September 11 | 86°F | 52°F | 6% | 2% | 12 h 40 min |
| September 12 | 85°F | 52°F | 6% | 2% | 12 h 40 min |
| September 13 | 85°F | 51°F | 6% | 2% | 12 h 40 min |
| September 14 | 85°F | 51°F | 7% | 2% | 12 h 30 min |
| September 15 | 84°F | 51°F | 7% | 2% | 12 h 30 min |
| September 16 | 84°F | 50°F | 7% | 2% | 12 h 30 min |
| September 17 | 84°F | 50°F | 7% | 2% | 12 h 30 min |
| September 18 | 83°F | 50°F | 7% | 3% | 12 h 20 min |
| September 19 | 83°F | 49°F | 7% | 3% | 12 h 20 min |
| September 20 | 82°F | 49°F | 7% | 3% | 12 h 20 min |
| September 21 | 82°F | 49°F | 7% | 3% | 12 h 20 min |
| September 22 | 81°F | 48°F | 8% | 3% | 12 h 10 min |
| September 23 | 81°F | 48°F | 8% | 3% | 12 h 10 min |
| September 24 | 81°F | 48°F | 8% | 3% | 12 h 10 min |
| September 25 | 80°F | 47°F | 8% | 3% | 12 h 10 min |
| September 26 | 80°F | 47°F | 8% | 3% | 12 h |
| September 27 | 79°F | 47°F | 8% | 3% | 12 h |
| September 28 | 79°F | 46°F | 8% | 3% | 12 h |
| September 29 | 78°F | 46°F | 8% | 3% | 11 h 50 min |
| September 30 | 78°F | 46°F | 8% | 3% | 11 h 50 min |
- Normal high
- 84°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 0.21 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 8
- Daylight
- 13 h 10 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 28
- Days at 80°F or more
- 21
- Sunshine
- 93%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00023185; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Reno in September?
On a given September day the chance of 0.01 inch or more is 7% on average, highest around September 30 (8%). In all, 0.21 in falls on 2 days of a normal September.
In a normal September in Reno, 8 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00023185.
How humid and windy is Reno in September?
At 3 p.m. the normal temperature is 76°F with 18% relative humidity and a dew point of 29°F; at 6 a.m. it is 46°F with 61% humidity. The wind averages 4.8 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. | 46°F | 33°F | 61% | 2.2 mph | 70% |
| 9 a.m. | 59°F | 33°F | 38% | 2.3 mph | 69% |
| noon | 72°F | 31°F | 22% | 5.8 mph | 63% |
| 3 p.m. | 76°F | 29°F | 18% | 8.9 mph | 59% |
| 6 p.m. | 69°F | 30°F | 24% | 9.0 mph | 63% |
| 9 p.m. | 60°F | 33°F | 35% | 4.7 mph | 78% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023185. 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 Reno?
The warmest September temperature on Reno's official record (since 1893) is 106°F, on September 6, 2022; the coldest is 20°F, on September 19, 1965. The wettest September brought 2.41 in (1918); the snowiest, 1.5 inches (1982).
The September mean against the 1991-2020 normal of 67.0°F: 2021 68.2°F (+1.2), 2022 71.3°F (+4.3), 2023 66.2°F (−0.8), 2024 68.2°F (+1.2), 2025 69.3°F (+2.3), 2026 66.2°F (−0.8). 4 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 68.2°F | +1.2°F | 0.09 in |
| 2022 | 71.3°F | +4.3°F | 0.25 in |
| 2023 | 66.2°F | −0.8°F | 0.61 in |
| 2024 | 68.2°F | +1.2°F | 0.25 in |
| 2025 | 69.3°F | +2.3°F | 0.10 in |
| 2026 | 66.2°F | −0.8°F | 0.01 in |
Source: records: ACIS, NWS threaded record RNOthr; recent months: ACIS, station USW00023185. Records and recent months use complete months only.
How does September in Reno compare across Nevada?
Across the 55 places PlainClimate covers in Nevada, September normal highs run from 71°F in Incline Village to 102°F in Laughlin; Reno's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.