Belgium, Wisconsin climate: Normal weather by month, frost dates and records
Belgium's normal year runs from 11°F January nights to 80°F July afternoons, with 31.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.3°C, January lows of −12°C, July highs of 26°C, 810 mm of precipitation a year.
- NOAA stationBelgium Wastewater Treatment Plant
- Station IDUSC00470652
- Location43.51°N 87.85°W
- Elevation731 ft (223 m)
- From the centerunder 1 mile
- Population2,515
On October 14, the normal high in Belgium is 60°F and the normal low 40°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Belgium.
- Jan 27° 11°
- Feb 31° 13°
- Mar 40° 23°
- Apr 52° 33°
- May 63° 44°
- Jun 74° 54°
- Jul 80° 60°
- Aug 78° 59°
- Sep 71° 50°
- Oct 58° 39°
- Nov 44° 28°
- Dec 33° 18°
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 Belgium each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 11°F. The most precipitation falls in June (3.86 in), the least in February (1.32 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 27°F | 11°F | 19.1°F | 1.43 | – | <1 | 30 | 9 h 20 min |
| February | 31°F | 13°F | 22.0°F | 1.32 | – | <1 | 27 | 10 h 30 min |
| March | 40°F | 23°F | 31.6°F | 1.99 | – | <1 | 25 | 11 h 50 min |
| April | 52°F | 33°F | 42.5°F | 3.57 | – | <1 | 14 | 13 h 20 min |
| May | 63°F | 44°F | 53.4°F | 3.71 | – | <1 | 1 | 14 h 40 min |
| June | 74°F | 54°F | 63.7°F | 3.86 | – | 1 | <1 | 15 h 20 min |
| July | 80°F | 60°F | 69.5°F | 3.52 | – | 2 | <1 | 15 h 10 min |
| August | 78°F | 59°F | 68.2°F | 3.26 | – | <1 | <1 | 14 h |
| September | 71°F | 50°F | 60.8°F | 2.75 | – | <1 | <1 | 12 h 30 min |
| October | 58°F | 39°F | 48.9°F | 2.70 | – | <1 | 7 | 11 h 10 min |
| November | 44°F | 28°F | 36.2°F | 1.96 | – | <1 | 21 | 9 h 40 min |
| December | 33°F | 18°F | 25.2°F | 1.81 | – | <1 | 29 | 9 h |
| Year (annual) | 54°F | 36°F | 45.1°F | 31.88 | – | 4 | 154 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | −3°C | −12°C | −7.2°C | 36 mm |
| February | −1°C | −10°C | −5.6°C | 34 mm |
| March | 4°C | −5°C | −0.2°C | 51 mm |
| April | 11°C | 1°C | 5.8°C | 91 mm |
| May | 17°C | 6°C | 11.9°C | 94 mm |
| June | 23°C | 12°C | 17.6°C | 98 mm |
| July | 26°C | 15°C | 20.8°C | 89 mm |
| August | 26°C | 15°C | 20.1°C | 83 mm |
| September | 22°C | 10°C | 16.0°C | 70 mm |
| October | 15°C | 4°C | 9.4°C | 69 mm |
| November | 7°C | −2°C | 2.3°C | 50 mm |
| December | 0°C | −8°C | −3.8°C | 46 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Port Washington (8 miles away), gets 42 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00470652; 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 Belgium?
Normal highs sit between 65°F and 85°F in June, July, August and September.
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 USC00470652.
When is the last frost in Belgium?
In Belgium, the last spring frost (32°F) comes after May 5 in half of years and after May 22 in one year in ten; the first autumn frost comes before October 12 in half of years and before September 27 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 51 year in 10 after May 22; 9 in 10 after April 20
- First autumn frost, half of years before
- October 121 year in 10 before September 27; 9 in 10 before October 27
NOAA puts the median frost-free season at 159 days, and the season without a hard freeze (28°F) at 184 days.
A hard freeze (28°F) comes after April 22 in half of springs and before October 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Belgium in zone 5b in ZIP code 53004, the nearest ZIP area.
Frost dates for every NOAA station in Wisconsin · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00470652; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Belgium?
In a normal year in Belgium, 4 days a year reach 90°F and 154 nights fall to 32°F or colder.
- Days at 90°F or more
- 4a 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
- 63high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00470652.
How sunny is Belgium?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Belgium, 3.7 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (53%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 54% | 1.4 |
| February | 60% | 2.3 |
| March | 66% | 3.5 |
| April | 68% | 4.6 |
| May | 70% | 5.4 |
| June | 75% | 6.0 |
| July | 80% | 6.1 |
| August | 79% | 5.2 |
| September | 77% | 4.2 |
| October | 67% | 2.6 |
| November | 62% | 1.7 |
| December | 53% | 1.2 |
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 Belgium need?
A normal year in Belgium brings 7,603 heating degree days, 42% more than the median U.S. place (5,373), and 390 cooling degree days, 57% 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 2,199 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,421 | 0 |
| February | 1,203 | 0 |
| March | 1,035 | 0 |
| April | 675 | 0 |
| May | 365 | 5 |
| June | 99 | 61 |
| July | 21 | 160 |
| August | 25 | 126 |
| September | 160 | 36 |
| October | 503 | 2 |
| November | 864 | 0 |
| December | 1,232 | 0 |
| Year (annual) | 7,603 | 390 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00470652. 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 Belgium been warmer than normal lately?
2025 averaged 45.6°F, 0.5°F above the 1991-2020 normal of 45.1°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 46.6°F | +1.5°F | 25.78 |
| 2024 | 48.5°F | +3.4°F | 36.50 |
| 2025 | 45.6°F | +0.5°F | 29.25 |
Source: observed years: ACIS, station USC00470652. A year counts only with all twelve months complete.
How does Belgium's climate compare?
Belgium is warmer than 81 of the other 164 places with their own NOAA record in Wisconsin, and wetter than 24. Across the 7,247 U.S. stations with normals, its annual mean of 45.1°F is warmer than 20%.
In the Köppen classification computed from these normals, Belgium 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 Belgium share this climate record?
3 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.
- Fredonia, WI2,281 people · 5 mi SW
- Cedar Grove, WI2,095 people · 4 mi NE
- Random Lake, WI1,570 people · 6 mi NW
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 Belgium's climate
What is the coldest month in Belgium?
January, with a normal high of 27°F and a normal low of 11°F. The warmest is July (80°F by day, 60°F at night).
Does it snow in Belgium?
Yes. NOAA publishes no 1991-2020 snowfall normal for Belgium's NOAA station; the nearest record that keeps one, Port Washington (8 miles away), records 42 inches of snow in a normal year.
What is the rainiest month in Belgium?
June, with 3.86 in of precipitation in a normal year; the driest is February with 1.32 in.
What plant hardiness zone is Belgium in?
The USDA's 2023 map puts Belgium in zone 5b in ZIP code 53004, the nearest ZIP area.
How late can frost come in Belgium?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 22. Waiting until May 22 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wisconsin climateThe statewide normals and every place in the state
- Port Washington, WI8 miles from this station, 46.7°F a year
- Hingham, WI9 miles from this station, 45.9°F a year
- Saukville, WI11 miles from this station, 45.0°F a year
- Grafton, WI15 miles from this station, 47.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made