Reedsburg, Wisconsin climate: Normal weather by month, frost dates and records
Reedsburg's normal year runs from 8°F January nights to 82°F July afternoons, with 39.6 inches of precipitation and 44 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.9°C, January lows of −13°C, July highs of 28°C, 1,005 mm of precipitation a year.
- NOAA stationReedsburg
- Station IDUSC00477052
- Location43.52°N 90.00°W
- Elevation926 ft (282 m)
- From the centerunder 1 mile
- Population10,314
On October 23, the normal high in Reedsburg is 57°F and the normal low 35°F, and the chance of measurable rain or snow is 34%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Reedsburg.
- Jan 27° 8°
- Feb 32° 12°
- Mar 44° 23°
- Apr 57° 35°
- May 69° 47°
- Jun 79° 57°
- Jul 82° 61°
- Aug 80° 58°
- Sep 73° 50°
- Oct 60° 38°
- Nov 45° 27°
- Dec 33° 15°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Reedsburg each month?
July is the warmest month, with normal highs of 82°F; January the coldest, with normal lows of 8°F. The most precipitation falls in June (5.40 in), the least in January (1.51 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 27°F | 8°F | 17.5°F | 1.51 | 9.9 | 8 | <1 | 30 | 9 h 20 min |
| February | 32°F | 12°F | 21.7°F | 1.54 | 14.8 | 8 | <1 | 27 | 10 h 30 min |
| March | 44°F | 23°F | 33.7°F | 2.20 | 5.1 | 9 | <1 | 24 | 11 h 50 min |
| April | 57°F | 35°F | 46.0°F | 3.84 | 2.7 | 12 | <1 | 11 | 13 h 20 min |
| May | 69°F | 47°F | 58.0°F | 4.29 | 0.0 | 13 | <1 | 1 | 14 h 40 min |
| June | 79°F | 57°F | 67.6°F | 5.40 | 0.0 | 11 | 2 | <1 | 15 h 20 min |
| July | 82°F | 61°F | 71.5°F | 5.27 | 0.0 | 9 | 3 | <1 | 15 h 10 min |
| August | 80°F | 58°F | 69.2°F | 4.74 | 0.0 | 10 | 2 | <1 | 14 h |
| September | 73°F | 50°F | 61.3°F | 3.55 | 0.0 | 10 | <1 | <1 | 12 h 30 min |
| October | 60°F | 38°F | 48.8°F | 3.07 | 0.4 | 11 | <1 | 10 | 11 h 10 min |
| November | 45°F | 27°F | 36.0°F | 2.17 | 1.7 | 8 | <1 | 21 | 9 h 40 min |
| December | 33°F | 15°F | 24.0°F | 1.99 | 9.3 | 10 | <1 | 29 | 9 h |
| Year (annual) | 57°F | 36°F | 46.3°F | 39.57 | 43.9 | 119 | 7 | 154 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −13°C | −8.1°C | 38 mm | 25 cm |
| February | 0°C | −11°C | −5.7°C | 39 mm | 38 cm |
| March | 7°C | −5°C | 0.9°C | 56 mm | 13 cm |
| April | 14°C | 2°C | 7.8°C | 98 mm | 7 cm |
| May | 21°C | 8°C | 14.4°C | 109 mm | 0 cm |
| June | 26°C | 14°C | 19.8°C | 137 mm | 0 cm |
| July | 28°C | 16°C | 21.9°C | 134 mm | 0 cm |
| August | 27°C | 15°C | 20.7°C | 120 mm | 0 cm |
| September | 23°C | 10°C | 16.3°C | 90 mm | 0 cm |
| October | 16°C | 3°C | 9.3°C | 78 mm | 1 cm |
| November | 7°C | −3°C | 2.2°C | 55 mm | 4 cm |
| December | 0°C | −9°C | −4.4°C | 51 mm | 24 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00477052; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Reedsburg?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, July has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00477052.
When is the last frost in Reedsburg?
In Reedsburg, the last spring frost (32°F) comes after May 2 in half of years and after May 16 in one year in ten; the first autumn frost comes before October 7 in half of years and before September 23 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 21 year in 10 after May 16; 9 in 10 after April 18
- First autumn frost, half of years before
- October 71 year in 10 before September 23; 9 in 10 before October 20
NOAA puts the median frost-free season at 156 days, and the season without a hard freeze (28°F) at 178 days.
A hard freeze (28°F) comes after April 20 in half of springs and before October 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Reedsburg in zone 5a in ZIP code 53959, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Reedsburg's NOAA station is in zone 5a: the coldest night of a typical year reaches −18°F (16 complete years).
Frost dates for every NOAA station in Wisconsin · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00477052; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Reedsburg?
In a normal year in Reedsburg, 7 days a year reach 90°F, 154 nights fall to 32°F or colder and 119 days bring measurable precipitation.
- Days at 90°F or more
- 7a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 154a normal year
- Days that stay below freezing
- 62high of 32°F or less
- Days with 0.01 inch of precipitation
- 119a normal year
- Days with 1 inch of snow or more
- 14a normal year
The highest temperature in this station's record (since 1893) is 104°F, on July 31, 1988; the lowest is −42°F, on January 30, 1951.
The wettest calendar year on that record is 2018, with 55.07 in; the snowiest season is 1958–59, with 80.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00477052; records: ACIS (NOAA Regional Climate Centers), station USC00477052. Records use complete months only; a month missing more than three days is left out.
How sunny is Reedsburg?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Reedsburg, 3.9 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 1.8 |
| February | 75% | 2.9 |
| March | 72% | 3.9 |
| April | 67% | 4.6 |
| May | 70% | 5.5 |
| June | 74% | 6.1 |
| July | 80% | 6.2 |
| August | 78% | 5.3 |
| September | 77% | 4.2 |
| October | 69% | 2.8 |
| November | 67% | 1.8 |
| December | 62% | 1.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Reedsburg need?
A normal year in Reedsburg brings 7,376 heating degree days, 37% more than the median U.S. place (5,373), and 587 cooling degree days, 35% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,595 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,474 | 0 |
| February | 1,212 | 0 |
| March | 971 | 1 |
| April | 572 | 2 |
| May | 252 | 33 |
| June | 46 | 124 |
| July | 11 | 214 |
| August | 25 | 156 |
| September | 164 | 53 |
| October | 508 | 5 |
| November | 870 | 0 |
| December | 1,271 | 0 |
| Year (annual) | 7,376 | 587 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00477052. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Reedsburg been warmer than normal lately?
2025 averaged 46.4°F, 0.1°F above the 1991-2020 normal of 46.3°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 47.1°F | +0.8°F | 28.26 | 27.4 |
| 2022 | 44.6°F | −1.7°F | 32.02 | 35.6 |
| 2023 | 48.1°F | +1.8°F | 26.35 | 36.2 |
| 2024 | 48.9°F | +2.6°F | 40.76 | 31.3 |
| 2025 | 46.4°F | +0.1°F | 29.64 | 25.5 |
Over 51 complete years from 1915 to 2025, the station's annual mean temperature rose at a fitted 3.9°F per century (+0.22°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00477052; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Reedsburg's climate compare?
Reedsburg is warmer than 112 of the other 164 places with their own NOAA record in Wisconsin, and wetter than 154. Across the 7,247 U.S. stations with normals, its annual mean of 46.3°F is warmer than 25%.
In the Köppen classification computed from these normals, Reedsburg is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Reedsburg share this climate record?
4 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Cazenovia, WI353 people · 10 mi W
- La Valle, WI348 people · 8 mi NW
- Ironton, WI261 people · 7 mi W
- Lime Ridge, WI156 people · 9 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Reedsburg's climate
What is the coldest month in Reedsburg?
January, with a normal high of 27°F and a normal low of 8°F. The warmest is July (82°F by day, 61°F at night).
Does it snow in Reedsburg?
Yes: 44 inches in a normal year, falling on 23 days with 0.1 inch or more, the most in February (14.8 inches).
What is the rainiest month in Reedsburg?
June, with 5.40 in of precipitation in a normal year; the driest is January with 1.51 in.
What plant hardiness zone is Reedsburg in?
The USDA's 2023 map puts Reedsburg in zone 5a in ZIP code 53959, the nearest ZIP area. By the same method at Reedsburg's NOAA station, the coldest night of a typical year reaches −18°F (16 years, 1991-2020): zone 5a.
How late can frost come in Reedsburg?
In half of years the last 32°F night comes after May 2; in one year in ten it comes after May 16. Waiting until May 16 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wisconsin climateThe statewide normals and every place in the state
- Rock Springs, WI6 miles from this station, 46.6°F a year
- Wisconsin Dells, WI13 miles from this station, 45.7°F a year
- Baraboo, WI14 miles from this station, 46.6°F a year
- Mauston, WI19 miles from this station, 45.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made