Grand Lake Stream, ME Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Grand Lake Stream's primary NOAA station, GRAND LAKE STREAM.
The climate verdict for Grand Lake Stream
Water is the standout signal in Grand Lake Stream, Maine: 45.6 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 44°F. At 44/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 44°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, above 10% of station-mapped location scores
- 45.6"
- annual precipitation · 74" snow
- 159 days
- frost-free days per growing season
Grand Lake Stream: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00173261 · Grand Lake Stream, ME 44°F mean · 45.6" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #1,029
- PHOTO-FINISH ≈ Lincoln Nepp
- PRCP-MID 45.6"
- SWING-WIDE 50°F
- COMF-LOW 44/100
- LOAD-HEAT 7,915 HDD
- STN-1 USC00173261
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Lincoln Nepp, NH (+ 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.
- Grand Lake Stre… (this station) 44°F
- Cold Bethel, ME 44°F
- Hot Poland, ME 44°F
- Near Lincoln Nepp, NH 44°F
- Near Howe, ID 44°F
Grand Lake Stream 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 · Grand Lake Stream
Grand Lake Stream: 31/100 · grade F
Grand Lake Stream publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Grand Lake Stream, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 45.6 in · 10.6 from 35 in | 63/100 · C |
| Normal heat + freeze calendar | 165 calendar days | 36/100 · F |
| Frost-free season | 159 days/year | 33/100 · F |
| Annual temperature balance | 44.0°F · 23.5° from 67.5°F | 16/100 · F |
| Snowfall burden | 74.2 inches/year | 8/100 · F |
Grand Lake Stream · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Grand Lake Stream is a continental Köppen climate: Dfb
Coldest-month mean 18.0°F and warmest-month mean 68.0°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
- 68.0°F
- Coldest month
- 18.0°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 Grand Lake Stream sits across the climate record
Three NOAA fields for Grand Lake Stream's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 85%
- Among 6,861 stations, Grand Lake Stream sits in the cooler third of annual means.
- Annual precipitation
- Top 30% wettest
- Grand Lake Stream's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 81%
- Warmest-to-coldest month gap for Grand Lake Stream is large versus 6,861 complete station-years.
How Grand Lake Stream compares across U.S. station-mapped locations
Grand Lake Stream's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 10th percentile score exceeds 10% 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%). This entry sits in this band.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Grand Lake Stream's measured station temperature trend
MethodologyAcross 35 complete annual observations from 1962 to 2025, GRAND LAKE STREAM warmed at a fitted rate of 0.30°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Grand Lake Stream primary station fitted change +0.30 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 27°F (-3°C) | 9°F (-13°C) | 18°F (-8°C) | 3.8" | 17.8" | 30.6 | 0.0 |
| February | 30°F (-1°C) | 10°F (-12°C) | 20°F (-7°C) | 3.3" | 19.9" | 27.5 | 0.0 |
| March | 39°F (4°C) | 20°F (-6°C) | 30°F (-1°C) | 4.0" | 13.4" | 29.1 | 0.0 |
| April | 51°F (10°C) | 32°F (0°C) | 41°F (5°C) | 3.6" | 3.5" | 21.3 | 0.0 |
| May | 64°F (18°C) | 42°F (6°C) | 53°F (12°C) | 3.3" | 0.2" | 5.0 | 0.2 |
| June | 73°F (23°C) | 52°F (11°C) | 62°F (17°C) | 3.7" | 0.0" | 0.4 | 0.7 |
| July | 78°F (26°C) | 58°F (14°C) | 68°F (20°C) | 3.3" | 0.0" | 0.0 | 1.3 |
| August | 78°F (25°C) | 56°F (14°C) | 67°F (19°C) | 2.8" | 0.0" | 0.0 | 1.2 |
| September | 70°F (21°C) | 49°F (9°C) | 59°F (15°C) | 3.5" | 0.0" | 1.4 | 0.5 |
| October | 57°F (14°C) | 38°F (3°C) | 47°F (9°C) | 5.0" | 0.1" | 12.4 | 0.0 |
| November | 45°F (7°C) | 29°F (-2°C) | 37°F (3°C) | 4.4" | 2.7" | 23.8 | 0.0 |
| December | 33°F (1°C) | 18°F (-8°C) | 26°F (-3°C) | 4.9" | 16.6" | 29.7 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 79°F around July 24, short of 90°F on every date, while 165 dates carry a normal low at or below freezing, the coldest 7°F near January 25.
The freezing stretch
The normal low stays at or below 32°F into April 16, then returns to freezing around November 4, covering 165 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 December 17, when 39% of years recorded at least a hundredth of an inch. The driest is August 25 at 29%. Summed across the calendar, that is about 129 wet dates a year.
The widest day
May 19 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Grand Lake Stream.
Where Grand Lake Stream Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Grand Lake Stream 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 and snowfall
Snow: 17.8"
10.9 days with precipitation
Snow: 19.9"
10.0 days with precipitation
Snow: 13.4"
11.0 days with precipitation
Snow: 3.5"
11.3 days with precipitation
Snow: 0.2"
11.4 days with precipitation
11.5 days with precipitation
10.8 days with precipitation
8.5 days with precipitation
9.4 days with precipitation
Snow: 0.1"
10.7 days with precipitation
Snow: 2.7"
11.1 days with precipitation
Snow: 16.6"
12.3 days with precipitation
Grand Lake Stream spreads its precipitation across the year
Neither half of the year dominates here: June through August take 21% of the annual total and December through February 26%, with neither reaching the 35% that would mark a distinct wet season. Grand Lake Stream has no dry season to plan around, though it does carry a wide 50°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 5.0" and August 2.8". The three wettest months together take 32% 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.
When it rains in Grand Lake Stream, it arrives in quantity
45.6" of precipitation falls across only about 129 wet days here, averaging 0.35 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 129 a year, 35% of all days
- Average depth per wet day
- 0.35 inches
- Most wet days
- December, about 12
- Fewest wet days
- August, about 9
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to Grand Lake Stream
Grand Lake Stream averages 74.2 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 26 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 74.2 inches of depth.
- Days recording measurable snow: about 26 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 16% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
May 4
50% probability date
Growing Season
159 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,915
Higher = more heating needed
Cooling Degree Days
298
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside ME closest to Grand Lake Stream 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 (44°F here).
- Blair, WI 44°F · 0.0°F off
- Brockway, MT 44°F · 0.0°F off
- Dassel, MN 44°F · 0.0°F off
- De Smet, SD 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (45.6" here), excluding temperature-peer places.
- Marshfield, MO 45.6" · 0.0" off
- Sparta, IL 45.6" · 0.0" off
- Surrency, GA 45.7" · 0.0" off
- Huntsville, AR 45.6" · 0.0" off
Snow and freeze rhythm
When cold and snow define Grand Lake Stream
heating led · wet · mid swing
Grand Lake Stream's energy balance leans toward cold weather: 7,915 annual heating degree days against 298 for cooling. Its 50.0°F seasonal range still makes the monthly rows more useful than the annual average alone.
Grand Lake Stream's frost-free season lasts about 159 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
-
1. Grand Lake Stream coldest normal
January
Averaging 18°F (-8°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Grand Lake Stream typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Grand Lake Stream snow peak
February
Grand Lake Stream averages 74.2 inches of snow a year, with February the snowiest month on the normals.
Questions about Grand Lake Stream's climate
How much snow does Grand Lake Stream get? ▼
How cold does Grand Lake Stream get in winter? ▼
How much energy does heating and cooling require in Grand Lake Stream? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Grand Lake Stream's primary station: GRAND LAKE STREAM (USC00173261). 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 Grand Lake Stream; 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 Grand Lake Stream 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.