Beaver Dam weather in September: Beaver Dam, Wisconsin: normal highs, lows, rain and records for September
Beaver Dam in September has a normal high of 72°F and a normal low of 50°F, a daily mean of 61°F, falling from 76°F on the 1st to 66°F by the 30th. Measurable precipitation falls on 10 days in a normal September, 3.26 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 22°C and low of 10°C, 83 mm of precipitation in September.
- NOAA stationBeaver Dam Wastewater Treatment Plant
- Station IDUSC00470645
- Location43.44°N 88.85°W
- Elevation861 ft (262 m)
- From the center2 miles
- Population16,443
- Jan 25° 9°
- Feb 29° 11°
- Mar 41° 23°
- Apr 54° 34°
- May 67° 46°
- Jun 77° 56°
- Jul 80° 60°
- Aug 78° 58°
- Sep 72° 50°
- Oct 58° 38°
- Nov 43° 26°
- Dec 30° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Beaver Dam in September?
The normal high is 72°F and the normal low 50°F, for a daily mean of 60.6°F. September is 7.7°F cooler than August and 12.5°F warmer than October. September is the 4th warmest month of the year in Beaver Dam and the 6th wettest. Across the month the normal high falls 10°F, from 76°F on September 1 to 66°F on September 30. From one year to the next September's mean temperature typically moves about 2.5°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 58°F and 63°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 34%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 76°F | 55°F | 30% | 21% |
| September 8 | 74°F | 53°F | 31% | 21% |
| September 15 | 72°F | 50°F | 32% | 21% |
| September 22 | 69°F | 47°F | 33% | 21% |
| September 30 | 66°F | 44°F | 34% | 21% |
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 | 55°F | 30% | 21% | 13 h 20 min |
| September 2 | 76°F | 55°F | 30% | 21% | 13 h 10 min |
| September 3 | 76°F | 54°F | 30% | 21% | 13 h 10 min |
| September 4 | 75°F | 54°F | 30% | 21% | 13 h 10 min |
| September 5 | 75°F | 54°F | 30% | 21% | 13 h |
| September 6 | 75°F | 53°F | 30% | 21% | 13 h |
| September 7 | 75°F | 53°F | 31% | 21% | 13 h |
| September 8 | 74°F | 53°F | 31% | 21% | 12 h 50 min |
| September 9 | 74°F | 52°F | 31% | 21% | 12 h 50 min |
| September 10 | 74°F | 52°F | 31% | 21% | 12 h 50 min |
| September 11 | 73°F | 52°F | 31% | 21% | 12 h 50 min |
| September 12 | 73°F | 51°F | 31% | 21% | 12 h 40 min |
| September 13 | 73°F | 51°F | 32% | 21% | 12 h 40 min |
| September 14 | 72°F | 50°F | 32% | 21% | 12 h 40 min |
| September 15 | 72°F | 50°F | 32% | 21% | 12 h 30 min |
| September 16 | 72°F | 50°F | 32% | 21% | 12 h 30 min |
| September 17 | 71°F | 49°F | 32% | 21% | 12 h 30 min |
| September 18 | 71°F | 49°F | 32% | 21% | 12 h 30 min |
| September 19 | 71°F | 48°F | 33% | 21% | 12 h 20 min |
| September 20 | 70°F | 48°F | 33% | 21% | 12 h 20 min |
| September 21 | 70°F | 47°F | 33% | 21% | 12 h 20 min |
| September 22 | 69°F | 47°F | 33% | 21% | 12 h 10 min |
| September 23 | 69°F | 47°F | 33% | 21% | 12 h 10 min |
| September 24 | 69°F | 46°F | 33% | 21% | 12 h 10 min |
| September 25 | 68°F | 46°F | 33% | 21% | 12 h 10 min |
| September 26 | 68°F | 45°F | 33% | 21% | 12 h |
| September 27 | 67°F | 45°F | 33% | 21% | 12 h |
| September 28 | 67°F | 45°F | 34% | 21% | 12 h |
| September 29 | 66°F | 44°F | 34% | 21% | 11 h 50 min |
| September 30 | 66°F | 44°F | 34% | 21% | 11 h 50 min |
- Normal high
- 72°FSeptember average
- Normal low
- 50°FSeptember average
- Precipitation
- 3.26 inmonth total
- Days with precipitation
- 100.01 inch or more
- Days at 90°F or more
- 1
- Daylight
- 13 h 20 min to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 20
- Days at 80°F or more
- 8
- Sunshine
- 77%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00470645; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Beaver Dam in September?
On a given September day the chance of 0.01 inch or more is 32% on average, highest around September 30 (34%). In all, 3.26 in falls on 10 days of a normal September, 1 of them with an inch or more.
In a normal September in Beaver Dam, 1 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00470645.
What are the records for September in Beaver Dam?
The warmest September temperature on this station's record (since 1893) is 97°F, on September 2, 1953; the coldest is 26°F, on September 23, 1974. The wettest September brought 15.05 in (1986).
The September mean against the 1991-2020 normal of 60.6°F: 2021 63.9°F (+3.3), 2022 62.5°F (+1.9), 2023 66.0°F (+5.4), 2024 66.2°F (+5.6), 2025 64.6°F (+4.0), 2026 65.5°F (+4.9). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.9°F | +3.3°F | 2.61 in |
| 2022 | 62.5°F | +1.9°F | 4.63 in |
| 2023 | 66.0°F | +5.4°F | 2.78 in |
| 2024 | 66.2°F | +5.6°F | 2.51 in |
| 2025 | 64.6°F | +4.0°F | 1.07 in |
| 2026 | 65.5°F | +4.9°F | 5.58 in |
Source: records: ACIS, station USC00470645; recent months: ACIS, station USC00470645. Records and recent months use complete months only.
How does September in Beaver Dam 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; Beaver Dam's is 72°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Beaver Dam in August78°F by day, 58°F at night
- Beaver Dam in October58°F by day, 38°F at night
- Beaver Dam 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