Rhinelander weather in September: Rhinelander, Wisconsin: normal highs, lows, rain and records for September
Rhinelander in September has a normal high of 69°F and a normal low of 45°F, a daily mean of 57°F, falling from 74°F on the 1st to 63°F by the 30th. Measurable precipitation falls on 12 days in a normal September, 3.48 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 21°C and low of 7°C, 88 mm of precipitation in September.
- NOAA stationRhinelander Oneida County Airport
- Station IDUSW00004803
- Location45.63°N 89.47°W
- Elevation1,599 ft (487 m)
- Population8,286
- Jan 23° 4°
- Feb 27° 6°
- Mar 39° 17°
- Apr 52° 29°
- May 66° 41°
- Jun 76° 50°
- Jul 80° 54°
- Aug 77° 52°
- Sep 69° 45°
- Oct 55° 34°
- Nov 39° 23°
- Dec 27° 11°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Rhinelander in September?
The normal high is 69°F and the normal low 45°F, for a daily mean of 56.9°F. September is 8.0°F cooler than August and 12.6°F warmer than October. September is the 4th warmest month of the year in Rhinelander and the 3rd wettest. Across the month the normal high falls 11°F, from 74°F on September 1 to 63°F on September 30. From one year to the next September's mean temperature typically moves about 3.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 54°F and 60°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 42%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 74°F | 49°F | 38% | 20% |
| September 8 | 72°F | 47°F | 39% | 20% |
| September 15 | 70°F | 45°F | 40% | 20% |
| September 22 | 67°F | 43°F | 41% | 21% |
| September 30 | 63°F | 39°F | 42% | 22% |
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 | 74°F | 49°F | 38% | 20% | 13 h 20 min |
| September 2 | 74°F | 49°F | 38% | 20% | 13 h 20 min |
| September 3 | 74°F | 49°F | 38% | 20% | 13 h 10 min |
| September 4 | 73°F | 49°F | 38% | 20% | 13 h 10 min |
| September 5 | 73°F | 48°F | 38% | 20% | 13 h 10 min |
| September 6 | 73°F | 48°F | 39% | 20% | 13 h 10 min |
| September 7 | 72°F | 48°F | 39% | 20% | 13 h |
| September 8 | 72°F | 47°F | 39% | 20% | 13 h |
| September 9 | 72°F | 47°F | 39% | 20% | 13 h |
| September 10 | 71°F | 47°F | 39% | 20% | 12 h 50 min |
| September 11 | 71°F | 46°F | 39% | 20% | 12 h 50 min |
| September 12 | 71°F | 46°F | 40% | 20% | 12 h 50 min |
| September 13 | 70°F | 46°F | 40% | 20% | 12 h 40 min |
| September 14 | 70°F | 45°F | 40% | 20% | 12 h 40 min |
| September 15 | 70°F | 45°F | 40% | 20% | 12 h 40 min |
| September 16 | 69°F | 45°F | 40% | 20% | 12 h 30 min |
| September 17 | 69°F | 44°F | 40% | 21% | 12 h 30 min |
| September 18 | 68°F | 44°F | 40% | 21% | 12 h 30 min |
| September 19 | 68°F | 44°F | 41% | 21% | 12 h 20 min |
| September 20 | 67°F | 43°F | 41% | 21% | 12 h 20 min |
| September 21 | 67°F | 43°F | 41% | 21% | 12 h 20 min |
| September 22 | 67°F | 43°F | 41% | 21% | 12 h 10 min |
| September 23 | 66°F | 42°F | 41% | 21% | 12 h 10 min |
| September 24 | 66°F | 42°F | 41% | 21% | 12 h 10 min |
| September 25 | 65°F | 41°F | 41% | 22% | 12 h 10 min |
| September 26 | 65°F | 41°F | 42% | 22% | 12 h |
| September 27 | 64°F | 41°F | 42% | 22% | 12 h |
| September 28 | 64°F | 40°F | 42% | 22% | 12 h |
| September 29 | 63°F | 40°F | 42% | 22% | 11 h 50 min |
| September 30 | 63°F | 39°F | 42% | 22% | 11 h 50 min |
- Normal high
- 69°FSeptember average
- Normal low
- 45°FSeptember average
- Precipitation
- 3.48 inmonth total
- Days with precipitation
- 120.01 inch or more
- Nights at 32°F or colder
- 3
- Daylight
- 13 h 20 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 15
- Days at 80°F or more
- 4
- Sunshine
- 73%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00004803; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Rhinelander in September?
On a given September day the chance of 0.01 inch or more is 40% on average, highest around September 27 (42%). In all, 3.48 in falls on 12 days of a normal September, 1 of them with an inch or more.
In a normal September in Rhinelander, 3 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00004803.
What are the records for September in Rhinelander?
The warmest September temperature on Rhinelander's official record (since 1893) is 98°F, on September 10, 1908; the coldest is 21°F, on September 30, 1918. The wettest September brought 8.90 in (1934).
The September mean against the 1991-2020 normal of 56.9°F: 2021 58.0°F (+1.1), 2022 56.9°F (at normal), 2023 60.9°F (+4.0), 2024 61.4°F (+4.5), 2025 59.5°F (+2.6), 2026 59.3°F (+2.4). 5 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 58.0°F | +1.1°F | 2.61 in |
| 2022 | 56.9°F | at normal | 1.42 in |
| 2023 | 60.9°F | +4.0°F | 3.21 in |
| 2024 | 61.4°F | +4.5°F | 0.55 in |
| 2025 | 59.5°F | +2.6°F | 2.24 in |
| 2026 | 59.3°F | +2.4°F | 2.25 in |
Source: records: ACIS, NWS threaded record RHIthr; recent months: ACIS, station USW00004803. Records and recent months use complete months only.
How does September in Rhinelander compare across Wisconsin?
Across the 165 places PlainClimate covers in Wisconsin, September normal highs run from 64°F in Laona to 77°F in West Allis; Rhinelander's is 69°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Rhinelander in August77°F by day, 52°F at night
- Rhinelander in October55°F by day, 34°F at night
- Rhinelander through the yearEvery month, frost dates, records and recent years
- Wisconsin in SeptemberThe statewide normal and the warmest and coolest places
- West Allis: Wisconsin's warmest Septembernormal high 77°F