Patten, Maine climate: Normal weather by month, frost dates and records
Patten's normal year runs from 3°F January nights to 76°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.8°C, January lows of −16°C, July highs of 24°C.
- NOAA stationPatten 2
- Station IDUSC00176594
- Location46.03°N 68.50°W
- Elevation820 ft (250 m)
- Population (town)894
- Census place502
On October 22, the normal high in Patten is 51°F and the normal low 33°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Patten.
- Jan 22° 3°
- Feb 25° 6°
- Mar 35° 16°
- Apr 48° 29°
- May 62° 40°
- Jun 72° 49°
- Jul 76° 55°
- Aug 75° 54°
- Sep 67° 45°
- Oct 54° 35°
- Nov 41° 25°
- Dec 29° 13°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Patten each month?
July is the warmest month, with normal highs of 76°F; January the coldest, with normal lows of 3°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 22°F | 3°F | 12.7°F | – | <1 | 31 | 9 h |
| February | 25°F | 6°F | 15.6°F | – | <1 | 28 | 10 h 20 min |
| March | 35°F | 16°F | 25.1°F | – | <1 | 30 | 11 h 50 min |
| April | 48°F | 29°F | 38.2°F | – | <1 | 22 | 13 h 30 min |
| May | 62°F | 40°F | 51.2°F | – | <1 | 5 | 14 h 50 min |
| June | 72°F | 49°F | 60.4°F | – | 1 | <1 | 15 h 40 min |
| July | 76°F | 55°F | 65.7°F | – | <1 | <1 | 15 h 30 min |
| August | 75°F | 54°F | 64.3°F | – | 1 | <1 | 14 h 10 min |
| September | 67°F | 45°F | 56.3°F | – | <1 | 2 | 12 h 40 min |
| October | 54°F | 35°F | 44.1°F | – | <1 | 14 | 11 h |
| November | 41°F | 25°F | 32.7°F | – | <1 | 25 | 9 h 30 min |
| December | 29°F | 13°F | 20.9°F | – | <1 | 30 | 8 h 40 min |
| Year (annual) | 50°F | 31°F | 40.6°F | – | 2 | 185 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −5°C | −16°C | −10.7°C |
| February | −4°C | −14°C | −9.1°C |
| March | 1°C | −9°C | −3.8°C |
| April | 9°C | −2°C | 3.4°C |
| May | 17°C | 5°C | 10.7°C |
| June | 22°C | 10°C | 15.8°C |
| July | 24°C | 13°C | 18.7°C |
| August | 24°C | 12°C | 17.9°C |
| September | 19°C | 7°C | 13.5°C |
| October | 12°C | 2°C | 6.7°C |
| November | 5°C | −4°C | 0.4°C |
| December | −2°C | −11°C | −6.2°C |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00176594; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Patten?
Normal highs sit between 65°F and 85°F in June, July, August and September.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00176594.
When is the last frost in Patten?
In Patten, the last spring frost (32°F) comes after May 13 in half of years and after May 30 in one year in ten; the first autumn frost comes before September 30 in half of years and before September 18 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 131 year in 10 after May 30; 9 in 10 after May 1
- First autumn frost, half of years before
- September 301 year in 10 before September 18; 9 in 10 before October 12
NOAA puts the median frost-free season at 138 days, and the season without a hard freeze (28°F) at 162 days.
A hard freeze (28°F) comes after May 1 in half of springs and before October 10 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Patten in zone 5a in ZIP code 04777, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Patten's NOAA station is in zone 5a: the coldest night of a typical year reaches −18°F (16 complete years).
Frost dates for every NOAA station in Maine · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00176594; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Patten?
In a normal year in Patten, 2 days a year reach 90°F and 185 nights fall to 32°F or colder.
- Days at 90°F or more
- 2a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 185a normal year
- Days that stay below freezing
- 87high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00176594.
How sunny is Patten?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Patten, 3.5 kWh per square metre a day. September is the sunniest month (73%) and December the cloudiest (56%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 63% | 1.4 |
| February | 66% | 2.3 |
| March | 68% | 3.5 |
| April | 67% | 4.6 |
| May | 65% | 5.1 |
| June | 67% | 5.6 |
| July | 72% | 5.6 |
| August | 73% | 4.9 |
| September | 73% | 3.9 |
| October | 63% | 2.3 |
| November | 58% | 1.4 |
| December | 56% | 1.0 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Patten need?
A normal year in Patten brings 9,033 heating degree days, 68% more than the median U.S. place (5,373), and 180 cooling degree days, 80% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,613 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,621 | 0 |
| February | 1,382 | 0 |
| March | 1,238 | 0 |
| April | 804 | 0 |
| May | 432 | 4 |
| June | 165 | 28 |
| July | 55 | 75 |
| August | 79 | 59 |
| September | 276 | 13 |
| October | 647 | 1 |
| November | 968 | 0 |
| December | 1,367 | 0 |
| Year (annual) | 9,033 | 180 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00176594. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
How does Patten's climate compare?
Patten is warmer than 4 of the other 41 places with their own NOAA record in Maine. Across the 7,247 U.S. stations with normals, its annual mean of 40.6°F is warmer than 7%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Patten share this climate record?
Island Falls has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Island Falls, ME749 people · 11 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Patten's climate
What is the coldest month in Patten?
January, with a normal high of 22°F and a normal low of 3°F. The warmest is July (76°F by day, 55°F at night).
What plant hardiness zone is Patten in?
The USDA's 2023 map puts Patten in zone 5a in ZIP code 04777, the nearest ZIP area. By the same method at Patten's NOAA station, the coldest night of a typical year reaches −18°F (16 years, 1991-2020): zone 5a.
How late can frost come in Patten?
In half of years the last 32°F night comes after May 13; in one year in ten it comes after May 30. Waiting until May 30 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Maine climateThe statewide normals and every place in the state
- Millinocket, ME28 miles from this station, 42.8°F a year
- Houlton, ME34 miles from this station, 40.7°F a year
- Danforth, ME40 miles from this station, 40.9°F a year
- Bridgewater, ME42 miles from this station, 40.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made