Updated October 2026
Katahdin Woods and Waters National Monument Weather by Month
Katahdin Woods and Waters National Monument is warmest in July, when the nearest NOAA climate station averages a high of 76°F and a low of 55°F, and coldest in January, with an average high of 22°F and an average low of 3°F.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 11.4 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Katahdin Woods and Waters National Monument can differ from these, particularly with elevation.
Warmest month
Jul
76°F avg high
Coldest month
Jan
3°F avg low
Longest days
Jun
15.5 h of daylight
Average weather at Katahdin Woods and Waters by month
| Month | Avg high | Avg low | Daylight |
|---|---|---|---|
| January | 22°F | 3°F | 8.8 h |
| February | 25°F | 6°F | 10.1 h |
| March | 35°F | 16°F | 11.6 h |
| April | 48°F | 29°F | 13.3 h |
| May | 62°F | 40°F | 14.7 h |
| June | 72°F | 49°F | 15.5 h |
| July | 76°F | 55°F | 15.2 h |
| August | 75°F | 54°F | 14.0 h |
| September | 67°F | 45°F | 12.3 h |
| October | 54°F | 35°F | 10.7 h |
| November | 41°F | 25°F | 9.2 h |
| December | 29°F | 13°F | 8.5 h |
NOAA 1991–2020 climate normals from station USC00176594, 11.4 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Katahdin Woods and Waters is at that time of year.
Katahdin Woods and Waters weather by season
Winter: December to February
Average highs bottom out at 22°F in January, between 29°F in December and 25°F in February, with average lows between 3°F and 13°F. The average high stays at or below freezing in all three months. Daylight is at its shortest, about 8.5 hours in December.
Spring: March to May
Average highs climb from 35°F in March to 62°F in May, with average lows between 16°F and 40°F. The average low is at or below freezing in March and April. Daylight lengthens from about 11.6 hours in March to 14.7 in May.
Summer: June to August
Average highs peak at 76°F in July, between 72°F in June and 75°F in August, with average lows between 49°F and 55°F. Daylight is at its longest, about 15.5 hours in June.
Fall: September to November
Average highs fall from 67°F in September to 41°F in November, with average lows between 25°F and 45°F. The average low is at or below freezing in November. Daylight shortens from about 12.3 hours in September to 9.2 in November.
What the National Park Service says about the weather
Northern Maine experiences all four seasons. Summer temperatures range from 45-90F (7-30C). Fall temperatures range from 30-70F (-1-21C). Typically, the first frost is in mid-October and first snowfall begins in November and can continue through April with an average accumulation of 73 inches (185 cm). Winter temperatures range from 14-35F (-10 - 2C). Spring temperatures range from 30-70F (-1-21C).
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Katahdin Woods and Waters
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 45.96°N, 68.71°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Katahdin Woods and Waters National Monument →
Weather and crowds together
July, the warmest month, sees about 1.2× the visitors of the park's average month. February is the busiest month of the year and April the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Katahdin Woods and Waters National Monument. For hotels, cabins and rentals close to the park, see where to stay near Katahdin Woods and Waters.
Where to stay near Katahdin Woods and Waters
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Frequently Asked Questions
July is the warmest month at Katahdin Woods and Waters National Monument, with an average high of 76°F and an average low of 55°F. That is the 1991–2020 average at the nearest long-record NOAA station, 11.4 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Katahdin Woods and Waters National Monument, with an average low of 3°F and an average high of 22°F, based on NOAA 1991–2020 climate normals.
Daylight at Katahdin Woods and Waters National Monument runs from about 8.5 hours a day in December to about 15.5 hours in June, computed from the park's latitude.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00176594), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (2020–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.