Orono, ME Climate: Temperature 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 Orono's primary NOAA station, ORONO.
The climate verdict for Orono
Orono, Maine has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 45°F. July is the warmest month at 70°F and January the coldest at 19°F.
- 45°F
- average temperature, NOAA 1991-2020 normal
- 158 days
- frost-free days per growing season
Orono: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00176430 · Orono, ME 45°F mean
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-UNK · SWING-WIDE · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 45°F
- RANK-COOL #1,304
- PHOTO-FINISH ≈ Brady
- PRCP-UNK Rain n/a
- SWING-WIDE 50°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 7,604 HDD
- STN-1 USC00176430
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Brady, MT (+ 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.
- Orono (this station) 45°F
- Cold Bangor, ME 45°F
- Hot Waterville Trtm…, ME 45°F
- Near Brady, MT 45°F
- Near Camden, NY 45°F
Orono 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 · Orono
Orono: 29/100 · grade F
Orono publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Orono, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 163 calendar days | 37/100 · F |
| Frost-free season | 158 days/year | 32/100 · F |
| Annual temperature balance | 45.1°F · 22.4° from 67.5°F | 20/100 · F |
Orono · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Orono sits across the climate record
Available NOAA 1991–2020 fields for Orono are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Cooler than 81%
- Among 6,861 stations, Orono sits in the cooler third of annual means.
- Seasonal temperature swing
- Wider than 82%
- Warmest-to-coldest month gap for Orono is large versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 28°F (-2°C) | 11°F (-12°C) | 19°F (-7°C) | N/A | 30.6 | 0.0 |
| February | 32°F (0°C) | 13°F (-11°C) | 23°F (-5°C) | N/A | 26.9 | 0.0 |
| March | 41°F (5°C) | 21°F (-6°C) | 31°F (0°C) | N/A | 27.7 | 0.0 |
| April | 53°F (12°C) | 32°F (0°C) | 43°F (6°C) | N/A | 18.1 | 0.0 |
| May | 66°F (19°C) | 43°F (6°C) | 55°F (13°C) | N/A | 1.8 | 0.3 |
| June | 75°F (24°C) | 52°F (11°C) | 63°F (17°C) | N/A | 0.0 | 2.6 |
| July | 81°F (27°C) | 58°F (15°C) | 70°F (21°C) | N/A | 0.0 | 3.4 |
| August | 79°F (26°C) | 57°F (14°C) | 68°F (20°C) | N/A | 0.0 | 2.1 |
| September | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | N/A | 1.0 | 0.5 |
| October | 57°F (14°C) | 38°F (3°C) | 47°F (8°C) | N/A | 9.9 | 0.0 |
| November | 45°F (7°C) | 29°F (-2°C) | 37°F (3°C) | N/A | 19.4 | 0.0 |
| December | 35°F (1°C) | 18°F (-8°C) | 27°F (-3°C) | N/A | 28.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 82°F around July 23, short of 90°F on every date, while 163 dates carry a normal low at or below freezing, the coldest 10°F near January 20.
The freezing stretch
The normal low stays at or below 32°F into April 15, then returns to freezing around November 5, covering 163 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.
The widest day
June 6 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Orono.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
October 6
50% probability date
Last Spring Freeze
May 1
50% probability date
Growing Season
158 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,604
Higher = more heating needed
Cooling Degree Days
374
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside ME closest to Orono 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
Data-derived climate profile
How Orono's climate pattern fits together
heating led · mid swing
Orono's energy balance leans toward cold weather: 7,604 annual heating degree days against 374 for cooling. Its 50.3°F seasonal range still makes the monthly rows more useful than the annual average alone.
Orono's frost-free season lasts about 158 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 Orono's middle-range seasonal profile. The measured spread is 50.3°F. The annual average is 45°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
A moisture-range label is withheld because Orono's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
These labels group NOAA 1991-2020 normals from Orono'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 Orono, not an official NOAA class or a year-ahead forecast.
Questions about Orono's climate
How cold does Orono get in winter? ▼
How much energy does heating and cooling require in Orono? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Orono's primary station: ORONO (USC00176430). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as a census-designated place (GEOID 2355575), not an incorporated municipality. Match rule for Orono: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Orono 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.