Merton, WI Weather
Merton, WI climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 20's.
The warmest month of the year is July with an average maximum temperature of 84.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 11.40 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 20 degrees Fahrenheit, and fairly limited during winter with an average difference of 16 degrees Fahrenheit.
The annual average precipitation at Merton is 34.64 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is August with an average rainfall of 4.77 Inches.
Weather Data
Current Conditions
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Clear, 55°F | Humidity: 59% | Dewpoint: 41°F |
| Wind Speed: SE 4.6 MPH (4 KT) | Heat Index: 55°F | ||
| Barometer: 30.14 in. | Wind Chill: 54°F |
Weather Forecast
| Hi: 59°F | Rest of today: Mostly sunny. Highs in the upper 50s. Southeast winds 5 to 10 mph. | |
| Lo: 41°F | ||
| Hi: 51°F | Monday: Partly sunny. Patchy fog in the morning. Highs in the lower 50s. East winds 5 to 10 mph. | |
| Lo: 40°F | ||
| Hi: 49°F | Tuesday: Cloudy with a 50 percent chance of rain. Highs in the upper 40s. Southeast winds 5 to 15 mph. | |
| Lo: 39°F | ||
| Hi: 41°F | Wednesday: Cloudy with a 50 percent chance of light rain. Highs in the lower 40s. | |
| Lo: 31°F | ||
| Hi: 39°F | Thanksgiving day: Mostly cloudy with a 40 percent chance of light snow. Highs in the upper 30s. | |
| Lo: 29°F | ||
| Hi: 41°F | Friday: Mostly sunny. Highs in the lower 40s. | |
| Lo: 30°F |
Moon, Sunrise and Sunset
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Moon Phase: Waxing Crescent Moon | Civil Twilight: 6:22 AM CST |
Sunrise: 6:53 AM CST |
| Sunset: 4:23 PM CST |
Civil Twilight: 4:55 PM CST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 27.5 | 32.8 | 43.9 | 57.0 | 70.1 | 80.0 | 84.2 | 81.5 | 73.4 | 61.0 | 45.4 | 32.6 | 57.5 |
| Mean °F | 19.5 | 24.7 | 35.3 | 47.3 | 59.3 | 69.1 | 73.8 | 71.7 | 63.2 | 51.4 | 37.6 | 25.2 | 48.2 |
| Min °F | 11.4 | 16.5 | 26.6 | 37.5 | 48.5 | 58.1 | 63.4 | 61.8 | 53.0 | 41.8 | 29.8 | 17.8 | 38.9 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 1.48 | 1.31 | 2.28 | 3.53 | 3.02 | 3.78 | 3.83 | 4.77 | 3.52 | 2.62 | 2.63 | 1.87 | 34.64 |

