Two Rivers, Wisconsin climate: Normal weather by month, frost dates and records
Two Rivers's normal year runs from 12°F January nights to 76°F August afternoons, with 32.0 inches of precipitation and 46 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 6.8°C, January lows of −11°C, August highs of 24°C, 814 mm of precipitation a year.
- NOAA stationTwo Rivers
- Station IDUSC00478672
- Location44.14°N 87.57°W
- Elevation589 ft (180 m)
- Population11,214
On October 23, the normal high in Two Rivers is 53°F and the normal low 38°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 Two Rivers.
- Jan 27° 12°
- Feb 30° 14°
- Mar 38° 23°
- Apr 49° 34°
- May 59° 44°
- Jun 69° 53°
- Jul 76° 59°
- Aug 76° 60°
- Sep 68° 52°
- Oct 56° 41°
- Nov 43° 29°
- Dec 33° 19°
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 Two Rivers each month?
August is the warmest month, with normal highs of 76°F; January the coldest, with normal lows of 12°F. The most precipitation falls in June (4.15 in), the least in February (1.45 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 27°F | 12°F | 19.6°F | 1.78 | 14.8 | 10 | <1 | 30 | 9 h 10 min |
| February | 30°F | 14°F | 21.8°F | 1.45 | 11.3 | 8 | <1 | 27 | 10 h 30 min |
| March | 38°F | 23°F | 30.7°F | 2.04 | 5.7 | 9 | <1 | 24 | 11 h 50 min |
| April | 49°F | 34°F | 41.3°F | 3.40 | 1.9 | 11 | <1 | 10 | 13 h 20 min |
| May | 59°F | 44°F | 51.2°F | 3.43 | 0.0 | 12 | <1 | 1 | 14 h 40 min |
| June | 69°F | 53°F | 61.2°F | 4.15 | 0.0 | 11 | <1 | <1 | 15 h 30 min |
| July | 76°F | 59°F | 67.5°F | 3.34 | 0.0 | 11 | 1 | <1 | 15 h 10 min |
| August | 76°F | 60°F | 67.8°F | 3.23 | 0.0 | 10 | <1 | <1 | 14 h |
| September | 68°F | 52°F | 60.4°F | 2.52 | 0.0 | 10 | <1 | <1 | 12 h 40 min |
| October | 56°F | 41°F | 48.4°F | 2.77 | 0.2 | 11 | <1 | 4 | 11 h 10 min |
| November | 43°F | 29°F | 36.3°F | 2.12 | 2.2 | 9 | <1 | 18 | 9 h 40 min |
| December | 33°F | 19°F | 25.9°F | 1.80 | 10.0 | 9 | <1 | 27 | 8 h 50 min |
| Year (annual) | 52°F | 37°F | 44.3°F | 32.03 | 46.1 | 118 | 1 | 140 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −3°C | −11°C | −6.9°C | 45 mm | 38 cm |
| February | −1°C | −10°C | −5.7°C | 37 mm | 29 cm |
| March | 3°C | −5°C | −0.7°C | 52 mm | 14 cm |
| April | 9°C | 1°C | 5.2°C | 86 mm | 5 cm |
| May | 15°C | 6°C | 10.7°C | 87 mm | 0 cm |
| June | 21°C | 12°C | 16.2°C | 105 mm | 0 cm |
| July | 24°C | 15°C | 19.7°C | 85 mm | 0 cm |
| August | 24°C | 16°C | 19.9°C | 82 mm | 0 cm |
| September | 20°C | 11°C | 15.8°C | 64 mm | 0 cm |
| October | 13°C | 5°C | 9.1°C | 70 mm | 1 cm |
| November | 6°C | −2°C | 2.4°C | 54 mm | 6 cm |
| December | 0°C | −7°C | −3.4°C | 46 mm | 25 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00478672; 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 Two Rivers?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, August has the fewest days with rain (10).
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 USC00478672.
When is the last frost in Two Rivers?
In Two Rivers, the last spring frost (32°F) comes after April 27 in half of years and after May 10 in one year in ten; the first autumn frost comes before October 21 in half of years and before October 4 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
- April 271 year in 10 after May 10; 9 in 10 after April 14
- First autumn frost, half of years before
- October 211 year in 10 before October 4; 9 in 10 before November 3
NOAA puts the median frost-free season at 175 days, and the season without a hard freeze (28°F) at 200 days.
A hard freeze (28°F) comes after April 14 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Two Rivers in zone 5b in ZIP code 54241, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Two Rivers's NOAA station is in zone 5b: the coldest night of a typical year reaches −11°F (29 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 USC00478672; 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 Two Rivers?
In a normal year in Two Rivers, 1 day a year reaches 90°F, 140 nights fall to 32°F or colder and 118 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 140a normal year
- Days that stay below freezing
- 62high of 32°F or less
- Days with 0.01 inch of precipitation
- 118a normal year
- Days with 1 inch of snow or more
- 15a normal year
The highest temperature in this station's record (since 1950) is 99°F, on July 29, 1988; the lowest is −28°F, on January 30, 1951.
The wettest calendar year on that record is 2019, with 43.03 in; the snowiest season is 2008–09, with 88.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00478672; records: ACIS (NOAA Regional Climate Centers), station USC00478672. Records use complete months only; a month missing more than three days is left out.
How sunny is Two Rivers?
Over a year 70% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Two Rivers, 3.6 kWh per square metre a day. July is the sunniest month (79%) and December the cloudiest (54%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 55% | 1.4 |
| February | 62% | 2.3 |
| March | 66% | 3.4 |
| April | 67% | 4.5 |
| May | 70% | 5.5 |
| June | 74% | 6.0 |
| July | 79% | 6.1 |
| August | 77% | 5.2 |
| September | 75% | 4.0 |
| October | 65% | 2.5 |
| November | 61% | 1.6 |
| December | 54% | 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 Two Rivers need?
A normal year in Two Rivers brings 7,779 heating degree days, 45% more than the median U.S. place (5,373), and 282 cooling degree days, 69% 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 1,933 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,406 | 0 |
| February | 1,210 | 0 |
| March | 1,063 | 0 |
| April | 713 | 0 |
| May | 431 | 2 |
| June | 143 | 29 |
| July | 31 | 109 |
| August | 26 | 115 |
| September | 167 | 28 |
| October | 517 | 1 |
| November | 863 | 0 |
| December | 1,211 | 0 |
| Year (annual) | 7,779 | 282 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00478672. 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 Two Rivers been warmer than normal lately?
2025 averaged 44.7°F, 0.4°F above the 1991-2020 normal of 44.3°F. 3 of the 4 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 43.8°F | −0.5°F | 30.65 | 35.0 |
| 2023 | 47.4°F | +3.1°F | 26.47 | 47.3 |
| 2024 | 48.4°F | +4.1°F | 34.35 | 38.8 |
| 2025 | 44.7°F | +0.4°F | 28.74 | 49.4 |
Over 61 complete years from 1953 to 2025, the station's annual mean temperature rose at a fitted 3.4°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00478672; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Two Rivers's climate compare?
Two Rivers is warmer than 60 of the other 164 places with their own NOAA record in Wisconsin, and wetter than 27. Across the 7,247 U.S. stations with normals, its annual mean of 44.3°F is warmer than 17%.
In the Köppen classification computed from these normals, Two Rivers 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 Two Rivers share this climate record?
Mishicot 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.
- Mishicot, WI1,423 people · 7 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 Two Rivers's climate
What is the coldest month in Two Rivers?
January, with a normal high of 27°F and a normal low of 12°F. The warmest is August (76°F by day, 60°F at night).
Does it snow in Two Rivers?
Yes: 46 inches in a normal year, falling on 20 days with 0.1 inch or more, the most in January (14.8 inches).
What is the rainiest month in Two Rivers?
June, with 4.15 in of precipitation in a normal year; the driest is February with 1.45 in.
What plant hardiness zone is Two Rivers in?
The USDA's 2023 map puts Two Rivers in zone 5b in ZIP code 54241, the nearest ZIP area. By the same method at Two Rivers's NOAA station, the coldest night of a typical year reaches −11°F (29 years, 1991-2020): zone 5b.
How late can frost come in Two Rivers?
In half of years the last 32°F night comes after April 27; in one year in ten it comes after May 10. Waiting until May 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Wisconsin climateThe statewide normals and every place in the state
- Manitowoc, WI6 miles from this station, 45.1°F a year
- Denmark, WI19 miles from this station, 44.7°F a year
- Kewaunee, WI22 miles from this station, 44.3°F a year
- Brillion, WI25 miles from this station, 45.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made