Castle Rock Lake vs Lake Minnetonka
Castle Rock Lake is the warmer swim right now at about 19.3°C. They are roughly 313 km apart in United States.
Castle Rock Lake
Wisconsin
mild · modelled estimate
- October average
- 19.3°C
- Warmest month
- August · 25.0°C
- Coldest month
- 2.0°C
- Swim season
- June–October
Castle Rock Lake in Wisconsin, United States warms into the mid-20s °C for reliable summer swimming, and freezes or near-freezes in winter.
Lake Minnetonka
Minnesota
mild · modelled estimate
- October average
- 18.3°C
- Warmest month
- August · 24.0°C
- Coldest month
- 1.0°C
- Swim season
- June–October
Lake Minnetonka in Minnesota, United States reaches comfortable swimming temperatures in July and August, and freezes or near-freezes in winter.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Castle Rock Lake | 3.5°C | 2.0°C | 3.5°C | 7.8°C | 13.5°C | 19.3°C | 23.5°C | 25.0°C | 23.5°C | 19.3°C | 13.5°C | 7.8°C |
| Lake Minnetonka | 2.5°C | 1.0°C | 2.5°C | 6.8°C | 12.5°C | 18.3°C | 22.5°C | 24.0°C | 22.5°C | 18.3°C | 12.5°C | 6.8°C |
Monthly values are modelled from each lake's long-term winter and summer envelope, then refined with today's forecast air temperature for the headline reading.
Related lake comparisons
Want a different mix? Compare up to four lakes side by side or browse all lake water temperatures.
Explore every sea temperature page
Jump straight to a country, coastal region, city, seasonal ranking or comparison.