Danbury, Wisconsin climate: Normal weather by month, frost dates and records
Danbury's normal year runs from 2°F January nights to 80°F July afternoons, with 30.1 inches of precipitation and 53 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.9°C, January lows of −17°C, July highs of 27°C, 765 mm of precipitation a year.
- NOAA stationDanbury
- Station IDUSC00471978
- Location46.01°N 92.37°W
- Elevation950 ft (290 m)
- Population (census place)85
On October 22, the normal high in Danbury is 53°F and the normal low 34°F, and the chance of measurable rain or snow is 29%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Danbury.
- Jan 22° 2°
- Feb 27° 7°
- Mar 40° 19°
- Apr 54° 31°
- May 67° 44°
- Jun 76° 53°
- Jul 80° 58°
- Aug 78° 56°
- Sep 70° 48°
- Oct 56° 36°
- Nov 40° 24°
- Dec 27° 11°
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 Danbury each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 2°F. The most precipitation falls in July (4.22 in), the least in January (0.72 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 22°F | 2°F | 11.9°F | 0.72 | 10.3 | 6 | <1 | 31 | 9 h |
| February | 27°F | 7°F | 16.9°F | 0.79 | 10.2 | 5 | <1 | 27 | 10 h 20 min |
| March | 40°F | 19°F | 29.4°F | 1.26 | 9.3 | 6 | <1 | 27 | 11 h 50 min |
| April | 54°F | 31°F | 42.7°F | 2.67 | 3.6 | 9 | <1 | 17 | 13 h 30 min |
| May | 67°F | 44°F | 55.4°F | 3.59 | 0.1 | 11 | <1 | 4 | 14 h 50 min |
| June | 76°F | 53°F | 64.2°F | 4.08 | 0.0 | 12 | 1 | <1 | 15 h 40 min |
| July | 80°F | 58°F | 69.0°F | 4.22 | 0.0 | 9 | 2 | <1 | 15 h 30 min |
| August | 78°F | 56°F | 67.1°F | 3.89 | 0.0 | 10 | 2 | <1 | 14 h 10 min |
| September | 70°F | 48°F | 59.1°F | 3.58 | 0.0 | 10 | <1 | 2 | 12 h 40 min |
| October | 56°F | 36°F | 45.9°F | 3.01 | 0.5 | 10 | <1 | 12 | 11 h |
| November | 40°F | 24°F | 32.0°F | 1.39 | 6.7 | 6 | <1 | 24 | 9 h 30 min |
| December | 27°F | 11°F | 18.8°F | 0.90 | 11.9 | 7 | <1 | 31 | 8 h 40 min |
| Year (annual) | 53°F | 32°F | 42.7°F | 30.10 | 52.6 | 101 | 5 | 174 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −6°C | −17°C | −11.2°C | 18 mm | 26 cm |
| February | −3°C | −14°C | −8.4°C | 20 mm | 26 cm |
| March | 4°C | −7°C | −1.4°C | 32 mm | 24 cm |
| April | 12°C | 0°C | 5.9°C | 68 mm | 9 cm |
| May | 20°C | 6°C | 13.0°C | 91 mm | 0 cm |
| June | 24°C | 12°C | 17.9°C | 104 mm | 0 cm |
| July | 27°C | 15°C | 20.6°C | 107 mm | 0 cm |
| August | 26°C | 13°C | 19.5°C | 99 mm | 0 cm |
| September | 21°C | 9°C | 15.1°C | 91 mm | 0 cm |
| October | 13°C | 2°C | 7.7°C | 76 mm | 1 cm |
| November | 5°C | −5°C | 0.0°C | 35 mm | 17 cm |
| December | −3°C | −12°C | −7.3°C | 23 mm | 30 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00471978; 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 Danbury?
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 USC00471978.
When is the last frost in Danbury?
In Danbury, the last spring frost (32°F) comes after May 11 in half of years and after May 28 in one year in ten; the first autumn frost comes before September 30 in half of years and before September 15 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 111 year in 10 after May 28; 9 in 10 after April 28
- First autumn frost, half of years before
- September 301 year in 10 before September 15; 9 in 10 before October 13
NOAA puts the median frost-free season at 138 days, and the season without a hard freeze (28°F) at 160 days.
A hard freeze (28°F) comes after April 30 in half of springs and before October 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Danbury in zone 4a in ZIP code 54893, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Danbury's NOAA station is in zone 4a: the coldest night of a typical year reaches −29°F (17 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 USC00471978; 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 Danbury?
In a normal year in Danbury, 5 days a year reach 90°F, 174 nights fall to 32°F or colder and 101 days bring measurable precipitation.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 174a normal year
- Days that stay below freezing
- 82high of 32°F or less
- Days with 0.01 inch of precipitation
- 101a normal year
- Days with 1 inch of snow or more
- 19a normal year
The highest temperature in this station's record (since 1919) is 108°F, on July 13, 1936; the lowest is −46°F, on January 30, 1950.
The wettest calendar year on that record is 1968, with 40.36 in; the snowiest season is 1996–97, with 83.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00471978; records: ACIS (NOAA Regional Climate Centers), station USC00471978. Records use complete months only; a month missing more than three days is left out.
How sunny is Danbury?
Over a year 72% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Danbury, 3.7 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (60%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 1.6 |
| February | 76% | 2.7 |
| March | 73% | 3.8 |
| April | 69% | 4.7 |
| May | 68% | 5.4 |
| June | 72% | 5.9 |
| July | 79% | 6.2 |
| August | 77% | 5.2 |
| September | 72% | 3.8 |
| October | 65% | 2.4 |
| November | 63% | 1.5 |
| December | 60% | 1.1 |
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 Danbury need?
A normal year in Danbury brings 8,500 heating degree days, 58% more than the median U.S. place (5,373), and 409 cooling degree days, 55% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 2,170 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,646 | 0 |
| February | 1,345 | 0 |
| March | 1,105 | 0 |
| April | 672 | 1 |
| May | 318 | 22 |
| June | 102 | 76 |
| July | 30 | 154 |
| August | 50 | 114 |
| September | 216 | 40 |
| October | 595 | 3 |
| November | 990 | 0 |
| December | 1,432 | 0 |
| Year (annual) | 8,500 | 409 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00471978. 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.
How does Danbury's climate compare?
Danbury is warmer than 36 of the other 164 places with their own NOAA record in Wisconsin, and wetter than 8. Across the 7,247 U.S. stations with normals, its annual mean of 42.7°F is warmer than 11%.
In the Köppen classification computed from these normals, Danbury 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 Danbury share this climate record?
Webster has no NOAA station with 1991-2020 normals of its 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.
- Webster, WI712 people · 9 mi S
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 Danbury's climate
What is the coldest month in Danbury?
January, with a normal high of 22°F and a normal low of 2°F. The warmest is July (80°F by day, 58°F at night).
Does it snow in Danbury?
Yes: 53 inches in a normal year, falling on 27 days with 0.1 inch or more, the most in December (11.9 inches).
What is the rainiest month in Danbury?
July, with 4.22 in of precipitation in a normal year; the driest is January with 0.72 in.
What plant hardiness zone is Danbury in?
The USDA's 2023 map puts Danbury in zone 4a in ZIP code 54893, the nearest ZIP area. By the same method at Danbury's NOAA station, the coldest night of a typical year reaches −29°F (17 years, 1991-2020): zone 4a.
How late can frost come in Danbury?
In half of years the last 32°F night comes after May 11; in one year in ten it comes after May 28. Waiting until May 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wisconsin climateThe statewide normals and every place in the state
- Bruno, MN22 miles from this station, 40.4°F a year
- Grantsburg, WI22 miles from this station, 43.1°F a year
- Minong, WI25 miles from this station, 42.8°F a year
- Spooner, WI27 miles from this station, 42.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made