Flathead Lake vs Lake Pend Oreille
Lake Pend Oreille is the warmer swim right now at about 12.5°C. They are roughly 174 km apart in United States.
Flathead Lake
Montana
11.5°C
cool · modelled estimate
- November average
- 11.5°C
- Warmest month
- August · 20.0°C
- Coldest month
- 3.0°C
- Swim season
- July–September
The largest freshwater lake west of the Mississippi, cool and crystal clear.
Lake Pend Oreille
Idaho
12.5°C
cool · modelled estimate
- November average
- 12.5°C
- Warmest month
- August · 21.0°C
- Coldest month
- 4.0°C
- Swim season
- July–September
Lake Pend Oreille in Idaho, United States is swimmable in high summer, brisk either side of it, and drops close to single digits in winter.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flathead Lake | 4.1°C | 3.0°C | 4.1°C | 7.3°C | 11.5°C | 15.8°C | 18.9°C | 20.0°C | 18.9°C | 15.8°C | 11.5°C | 7.3°C |
| Lake Pend Oreille | 5.1°C | 4.0°C | 5.1°C | 8.3°C | 12.5°C | 16.8°C | 19.9°C | 21.0°C | 19.9°C | 16.8°C | 12.5°C | 8.3°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.
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