Waterville Trtmt Plt, ME Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Waterville Trtmt Plt's primary NOAA station, WATERVILLE TRTMT PLT.
The climate verdict for Waterville Trtmt Plt
Waterville Trtmt Plt, Maine has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 45°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 45°F
- yearly average temperature, NOAA normal
- 64/100
- comfort score, above 49% of station-mapped location scores
- 43.4"
- annual precipitation
- 161 days
- growing season, frost-free days
Waterville Trtmt Plt: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00179151 · Waterville Trtmt Plt, ME 45°F mean · 43.4" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 45°F
- RANK-COOL #1,304
- PHOTO-FINISH ≈ Traverse City M…
- PRCP-MID 43.4"
- SWING-WIDE 51°F
- COMF-MID 64/100
- LOAD-HEAT 7,596 HDD
- STN-1 USC00179151
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Traverse City Munson, MI (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every ME station list.
- Waterville Trtm… (this station) 45°F
- Hot Franklin Falls…, NH 45°F
- Near Traverse City M…, MI 45°F
- Near Brady, MT 45°F
- Near Orono, ME 45°F
Waterville Trtmt Plt sits in Maine, the #4 coldest U.S. state at 43.1°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Waterville Trtmt Plt
Waterville Trtmt Plt: 38/100 · grade F
Waterville Trtmt Plt publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Waterville Trtmt Plt, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 43.4 in · 8.4 from 35 in | 71/100 · B |
| Normal heat + freeze calendar | 162 calendar days | 38/100 · F |
| Frost-free season | 161 days/year | 34/100 · F |
| Annual temperature balance | 45.1°F · 22.4° from 67.5°F | 20/100 · F |
Waterville Trtmt Plt · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Waterville Trtmt Plt is a continental Köppen climate: Dfb
Coldest-month mean 18.7°F and warmest-month mean 69.6°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 69.6°F
- Coldest month
- 18.7°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Waterville Trtmt Plt sits across the climate record
Three NOAA fields for Waterville Trtmt Plt's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 81%
- Among 6,861 stations, Waterville Trtmt Plt sits in the cooler third of annual means.
- Annual precipitation
- 65th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 83%
- Warmest-to-coldest month gap for Waterville Trtmt Plt is large versus 6,861 complete station-years.
How Waterville Trtmt Plt compares across U.S. station-mapped locations
Waterville Trtmt Plt's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Waterville Trtmt Plt's measured station temperature trend
MethodologyAcross 60 complete annual observations from 1959 to 2025, WATERVILLE TRTMT PLT warmed at a fitted rate of 0.32°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Waterville Trtmt Plt primary station fitted change +0.32 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 29°F (-2°C) | 9°F (-13°C) | 19°F (-7°C) | 3.1" | 30.5 | 0.0 |
| February | 32°F (0°C) | 10°F (-12°C) | 21°F (-6°C) | 2.6" | 27.3 | 0.0 |
| March | 40°F (5°C) | 21°F (-6°C) | 30°F (-1°C) | 3.3" | 27.9 | 0.0 |
| April | 54°F (12°C) | 32°F (0°C) | 43°F (6°C) | 3.7" | 17.4 | 0.0 |
| May | 66°F (19°C) | 43°F (6°C) | 55°F (13°C) | 3.3" | 1.8 | 0.3 |
| June | 75°F (24°C) | 53°F (12°C) | 64°F (18°C) | 4.0" | 0.0 | 1.2 |
| July | 80°F (27°C) | 59°F (15°C) | 70°F (21°C) | 3.4" | 0.0 | 2.1 |
| August | 80°F (26°C) | 57°F (14°C) | 69°F (20°C) | 3.4" | 0.0 | 1.5 |
| September | 72°F (22°C) | 50°F (10°C) | 61°F (16°C) | 3.8" | 0.4 | 0.6 |
| October | 59°F (15°C) | 38°F (4°C) | 49°F (9°C) | 4.9" | 8.1 | 0.0 |
| November | 46°F (8°C) | 29°F (-2°C) | 37°F (3°C) | 3.9" | 21.3 | 0.0 |
| December | 35°F (1°C) | 17°F (-8°C) | 26°F (-3°C) | 3.9" | 29.3 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 81°F around July 24, short of 90°F on every date, while 162 dates carry a normal low at or below freezing, the coldest 7°F near January 27.
The freezing stretch
The normal low stays at or below 32°F into April 15, then returns to freezing around November 6, covering 162 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is June 5, when 42% of years recorded at least a hundredth of an inch. The driest is March 18 at 32%. Summed across the calendar, that is about 135 wet dates a year.
The widest day
May 6 carries the biggest normal gap between afternoon and dawn, 23°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Waterville Trtmt Plt.
Where Waterville Trtmt Plt Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 23°F, is narrower than most stations record.
Waterville Trtmt Plt earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
10.7 days with precipitation
9.4 days with precipitation
9.8 days with precipitation
11.3 days with precipitation
12.5 days with precipitation
12.9 days with precipitation
12.3 days with precipitation
10.5 days with precipitation
10.2 days with precipitation
12.0 days with precipitation
11.2 days with precipitation
11.9 days with precipitation
Waterville Trtmt Plt spreads its precipitation across the year
Neither half of the year dominates here: June through August take 25% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Waterville Trtmt Plt has no dry season to plan around, though it does carry a wide 50.9°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 4.9" and February 2.6". The three wettest months together take 30% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Waterville Trtmt Plt's precipitation splits across the calendar
About 135 days a year record measurable precipitation here, carrying 43.4" between them, or roughly 0.32 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
May 2
50% probability date
Growing Season
161 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,596
Higher = more heating needed
Cooling Degree Days
394
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside ME closest to Waterville Trtmt Plt on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (45°F here).
- Alfred, NY 45°F · 0.0°F off
- Big Sandy, MT 45°F · 0.0°F off
- Bradford, NH 45°F · 0.0°F off
- Brady, MT 45°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (43.4" here), excluding temperature-peer places.
- Dannemora, NY 43.4" · 0.0" off
- Front Royal, VA 43.4" · 0.0" off
- Bland, VA 43.3" · 0.0" off
- Clinton, MO 43.3" · 0.0" off
Data-derived climate profile
How Waterville Trtmt Plt's climate pattern fits together
heating led · moderate · mid swing
Waterville Trtmt Plt's energy balance leans toward cold weather: 7,596 annual heating degree days against 394 for cooling. Its 50.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Waterville Trtmt Plt's frost-free season lasts about 161 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Waterville Trtmt Plt's middle-range seasonal profile. The measured spread is 50.9°F. The annual average is 45°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Waterville Trtmt Plt's 43.4 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Waterville Trtmt Plt's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Waterville Trtmt Plt, not an official NOAA class or a year-ahead forecast.
Questions about Waterville Trtmt Plt's climate
How much rain does Waterville Trtmt Plt get? ▼
How cold does Waterville Trtmt Plt get in winter? ▼
How much energy does heating and cooling require in Waterville Trtmt Plt? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Waterville Trtmt Plt's primary station: WATERVILLE TRTMT PLT (USC00179151). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Waterville Trtmt Plt; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Waterville Trtmt Plt comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.