Updated October 2026
Interstate State Park: Weather by Month and When to Go
Interstate State Park is a state park in Minnesota. The USGS Protected Areas Database maps about 270 acres under its name. Average highs range from 23°F in January to 82°F in July.
Average highs sit between 60°F and 80°F in May through June and August through September. They run above 80°F in July and below 60°F in October through April. The figures are NOAA climate normals for 1991–2020, measured at a weather station 1.3 miles from the park.
Warmest average high
82°F
July
Coldest average low
3°F
January
Most precipitation
4.2 in
July
Longest days
15.5 h
June
Interstate State Park weather by month
| Month | Average high | Average low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 23°F | 3°F | 0.6 in | 7.7 in | 8.9 h |
| February | 28°F | 5°F | 0.8 in | 9.6 in | 10.2 h |
| March | 41°F | 19°F | 1.3 in | 5.7 in | 11.6 h |
| April | 55°F | 33°F | 2.7 in | 1.2 in | 13.3 h |
| May | 68°F | 46°F | 4.1 in | 0.0 in | 14.7 h |
| June | 78°F | 56°F | 4.1 in | 0.0 in | 15.5 h |
| July | 82°F | 61°F | 4.2 in | 0.0 in | 15.1 h |
| August | 80°F | 59°F | 3.7 in | 0.0 in | 13.9 h |
| September | 72°F | 50°F | 3.6 in | 0.0 in | 12.3 h |
| October | 58°F | 38°F | 2.9 in | 0.8 in | 10.7 h |
| November | 42°F | 25°F | 1.4 in | 6.7 in | 9.3 h |
| December | 28°F | 11°F | 1.1 in | 10.9 in | 8.5 h |
Temperature, precipitation and snowfall figures are NOAA climate normals for 1991–2020 from station USC00477464, the nearest station with a complete set of temperature normals, 1.3 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 82°F and an average low of 61°F. January is the coldest month, with an average low of 3°F and an average high of 23°F.
- Precipitation. July is the wettest month, averaging 4.2 inches of precipitation, and January is the driest, at 0.6 inches. An average year brings about 30.5 inches in total.
- Snowfall. The station averages 42.6 inches of snow a year, with the most in December (10.9 inches).
- Daylight. Days run from about 8.5 hours of daylight in December to 15.5 hours in June.
Camping, trails, maps and fees
Whether Interstate 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 Interstate State Park page
For the forecast rather than the averages, the National Weather Service issues a point forecast for the park's location.
Where to stay near Interstate State Park
Hotels, cabins and vacation rentals near Interstate State Park, with live availability and prices.
Top-rated places to stay near Interstate State Park
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
July is the warmest month, with an average high of 82°F and an average low of 61°F. January is the coldest month, with an average low of 3°F and an average high of 23°F. These are NOAA 1991–2020 climate normals from a weather station 1.3 miles from the park.
Average highs sit between 60°F and 80°F in May through June and August through September. They run above 80°F in July and below 60°F in October through April.
July is the wettest month, averaging 4.2 inches of precipitation, and January is the driest, at 0.6 inches. An average year brings about 30.5 inches in total. Snowfall averages 42.6 inches a year, with the most in December.
Days run from about 8.5 hours of daylight in December to 15.5 hours in June. The hours are calculated for the park's latitude.
Nearest National Park Service sites
- Saint Croix National Scenic Riverway26 miles away
- Mississippi National River & Recreation Area38 miles away
- Apostle Islands National Lakeshore145 miles away
Nearby state parks
- Willow River State Park26 miles away · Wisconsin
- Afton State Park38 miles away
- Fort Snelling State Park45 miles away
- Jay Cooke State Park88 miles away
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 Minnesota state park listing for the park's name.