Lebanon, OR Climate: Temperature 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 Lebanon's primary NOAA station, LEBANON.
The climate verdict for Lebanon
A compact 29°F seasonal swing gives Lebanon, Oregon a steadier-than-extreme annual shape. NOAA reports an annual average of 55°F. August is the warmest month at 71°F and December the coldest at 42°F.
- 55°F
- yearly average temperature, NOAA normal
- 249 days
- frost-free growing season
Lebanon: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00354819 · Lebanon, OR 55°F mean
TEMP-COOL · RANK-UPPER · PHOTO-FINISH · PRCP-UNK · SWING-NARROW · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 55°F
- RANK-UPPER #4,117
- PHOTO-FINISH ≈ Winchester
- PRCP-UNK Rain n/a
- SWING-NARROW 29°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 4,149 HDD
- STN-1 USC00354819
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Winchester, OR (+ 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 OR station list.
- Lebanon (this station) 55°F
- Cold Portland Kgw-tv, OR 55°F
- Hot Portland, OR 55°F
- Near Winchester, OR 55°F
- Near Aurora State, OR 55°F
Climate Living Index · Lebanon
Lebanon: 81/100 · grade B
Lebanon publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Lebanon, not an official NOAA rating. Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Frost-free season | 249 days/year | 88/100 · A |
| Annual temperature balance | 54.9°F · 12.6° from 67.5°F | 59/100 · C |
Lebanon · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Lebanon sits across the climate record
Available NOAA 1991–2020 fields for Lebanon are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- 60th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Seasonal temperature swing
- Narrower than 92%
- Warmest-to-coldest month gap for Lebanon is compact 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 | 49°F (9°C) | 37°F (3°C) | 43°F (6°C) | N/A | 10.0 | 0.0 |
| February | 53°F (12°C) | 37°F (3°C) | 45°F (7°C) | N/A | 7.7 | 0.0 |
| March | 58°F (14°C) | 39°F (4°C) | 48°F (9°C) | N/A | 4.4 | 0.0 |
| April | 62°F (17°C) | 42°F (5°C) | 52°F (11°C) | N/A | 1.0 | 0.0 |
| May | 69°F (21°C) | 47°F (8°C) | 58°F (15°C) | N/A | 0.0 | 0.7 |
| June | 76°F (24°C) | 52°F (11°C) | 64°F (18°C) | N/A | 0.0 | 2.3 |
| July | 85°F (29°C) | 55°F (13°C) | 70°F (21°C) | N/A | 0.0 | 11.0 |
| August | 86°F (30°C) | 56°F (13°C) | 71°F (22°C) | N/A | 0.0 | 11.5 |
| September | 79°F (26°C) | 51°F (10°C) | 65°F (18°C) | N/A | 0.0 | 4.9 |
| October | 65°F (18°C) | 45°F (7°C) | 55°F (13°C) | N/A | 0.5 | 0.0 |
| November | 54°F (12°C) | 40°F (4°C) | 47°F (8°C) | N/A | 4.2 | 0.0 |
| December | 47°F (8°C) | 36°F (2°C) | 42°F (5°C) | N/A | 10.8 | 0.0 |
The year, day by day
The calendar barely moves in Lebanon: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 36°F near December 17 and 87°F near July 27.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 36°F around December 17.
The widest day
July 25 carries the biggest normal gap between afternoon and dawn, 31°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Lebanon.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
November 18
50% probability date
Last Spring Freeze
March 14
50% probability date
Growing Season
249 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,149
Higher = more heating needed
Cooling Degree Days
494
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Lebanon 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 (55°F here).
- Booneville, KY 55°F · 0.0°F off
- California, MO 55°F · 0.0°F off
- Clendenin, WV 55°F · 0.0°F off
- Coalmont, TN 55°F · 0.0°F off
Data-derived climate profile
How Lebanon's climate pattern fits together
heating led · low swing
Heating is the larger measured load in Lebanon, at 4,149 degree days versus 494 for cooling. Unlike a strongly continental record, however, its 29.0°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
The frost-free window extends for about 249 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
Temperature varies within a narrow 29.0°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 55°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A moisture-range label is withheld because Lebanon'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 Lebanon'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 Lebanon, not an official NOAA class or a year-ahead forecast.
Questions about Lebanon's climate
How many days above 90°F does Lebanon get? ▼
How much energy does heating and cooling require in Lebanon? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Lebanon's primary station: LEBANON (USC00354819). 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 an incorporated place (GEOID 4141650). Match rule for Lebanon: 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 Lebanon 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.