Updated October 2026
Mirror Lake State Park: Weather by Month and When to Go
Mirror Lake State Park is a state park in Wisconsin. The USGS Protected Areas Database maps about 2,200 acres under its name. Average highs range from 26°F in January to 83°F in July.
Average highs sit between 60°F and 80°F in May through June and September through October. They run above 80°F in July and August and below 60°F in November through April. The figures are NOAA climate normals for 1991–2020, measured at a weather station 4.1 miles from the park.
Warmest average high
83°F
July
Coldest average low
8°F
January
Most precipitation
5.1 in
June
Longest days
15.2 h
June
Mirror Lake State Park weather by month
| Month | Average high | Average low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 26°F | 8°F | 1.3 in | 11.5 in | 9.1 h |
| February | 31°F | 11°F | 1.4 in | 10.2 in | 10.3 h |
| March | 43°F | 22°F | 2.3 in | 5.9 in | 11.6 h |
| April | 57°F | 33°F | 4.1 in | 2.0 in | 13.2 h |
| May | 69°F | 45°F | 4.4 in | 0.0 in | 14.5 h |
| June | 79°F | 56°F | 5.1 in | 0.0 in | 15.2 h |
| July | 83°F | 60°F | 4.0 in | 0.0 in | 14.9 h |
| August | 81°F | 57°F | 4.2 in | 0.0 in | 13.8 h |
| September | 73°F | 49°F | 3.8 in | 0.0 in | 12.3 h |
| October | 60°F | 37°F | 2.8 in | 0.4 in | 10.8 h |
| November | 44°F | 26°F | 2.2 in | 2.0 in | 9.4 h |
| December | 32°F | 15°F | 1.8 in | 8.7 in | 8.8 h |
Temperature, precipitation and snowfall figures are NOAA climate normals for 1991–2020 from station USC00479319, the nearest station with a complete set of temperature normals, 4.1 miles from the park. Conditions in the park can differ from the station's, most of all where the two sit at different elevations. Daylight is calculated for the park's latitude at the middle of each month. The acreage is what the USGS Protected Areas Database maps under the park's name. The state's own figure can differ, because the database may hold part of a park under another name.
What the averages show
- Temperature. July is the warmest month, with an average high of 83°F and an average low of 60°F. January is the coldest month, with an average low of 8°F and an average high of 26°F.
- Precipitation. June is the wettest month, averaging 5.1 inches of precipitation, and January is the driest, at 1.3 inches. An average year brings about 37.4 inches in total.
- Snowfall. The station averages 40.7 inches of snow a year, with the most in January (11.5 inches).
- Daylight. Days run from about 8.8 hours of daylight in December to 15.2 hours in June.
Camping, trails, maps and fees
Whether Mirror Lake State Park has camping or cabins, where its trails run, when it opens and what it charges are all published by the agency that runs the park. Its official page is the place to check before a trip.
Official Mirror Lake State Park page
For the forecast rather than the averages, the National Weather Service issues a point forecast for the park's location.
National Weather Service forecast for Mirror Lake State Park
Where to stay near Mirror Lake State Park
Hotels, cabins and vacation rentals near Mirror Lake State Park, with live availability and prices.
Top-rated places to stay near Mirror Lake State Park
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Mirror Lake State Park?
Get lodging deals near Mirror Lake State Park by email. No spam, unsubscribe anytime.
Frequently Asked Questions
July is the warmest month, with an average high of 83°F and an average low of 60°F. January is the coldest month, with an average low of 8°F and an average high of 26°F. These are NOAA 1991–2020 climate normals from a weather station 4.1 miles from the park.
Average highs sit between 60°F and 80°F in May through June and September through October. They run above 80°F in July and August and below 60°F in November through April.
June is the wettest month, averaging 5.1 inches of precipitation, and January is the driest, at 1.3 inches. An average year brings about 37.4 inches in total. Snowfall averages 40.7 inches a year, with the most in January.
Days run from about 8.8 hours of daylight in December to 15.2 hours in June. The hours are calculated for the park's latitude.
Nearest National Park Service sites
- Ice Age National Scenic Trail32 miles away
- Effigy Mounds National Monument77 miles away
- Herbert Hoover National Historic Site152 miles away
Nearby state parks
- Governor Dodge State Park40 miles away
- Pikes Peak State Park78 miles away · Iowa
- High Cliff State Park86 miles away
- Rock Cut State Park94 miles away · Illinois
Distances are measured in a straight line from the park, so the drive is longer.
Sources: NOAA NCEI U.S. Climate Normals 1991–2020; USGS Protected Areas Database for location and acreage; the official Wisconsin state park listing for the park's name.