Rome St, OR Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Rome St's primary NOAA station, ROME ST AP.
The climate verdict for Rome St
Dryness leads the climate profile for Rome St, Oregon, with 8.2 inches of precipitation a year. NOAA records an annual average of 50°F. At 40/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 6% of scores.
- 50°F
- average temperature, NOAA 1991-2020 normal
- 40/100
- comfort score, above 6% of station-mapped location scores
- 8.2"
- annual precipitation
- 118 days
- frost-free days per growing season
Rome St: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00094107 · Rome St, OR 50°F mean · 8.2" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 50°F
- RANK-COOL #2,676
- PHOTO-FINISH ≈ Winnemucca
- PRCP-ARID 8.2"
- SWING-MID 44°F
- COMF-LOW 40/100
- LOAD-HEAT 6,152 HDD
- STN-1 USW00094107
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Winnemucca, NV (+ 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.
- Rome St (this station) 50°F
- Cold Cambridge City, IN 50°F
- Hot Tionesta 2 SE L…, PA 50°F
- Near Winnemucca, NV 50°F
- Near Boise, ID 50°F
Climate Living Index · Rome St
Rome St: 16/100 · grade F
Rome St publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Rome St, not an official NOAA rating. Rankings still use Comfort Score 40/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 49.9°F · 17.6° from 67.5°F | 40/100 · D |
| Precipitation balance | 8.2 in · 26.8 from 35 in | 8/100 · F |
| Frost-free season | 118 days/year | 6/100 · F |
| Normal heat + freeze calendar | 242 calendar days | 0/100 · F |
Rome St · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Rome St's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 73.5°F
- Coldest month
- 29.6°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 Rome St sits across the climate record
Three NOAA fields for Rome St's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- 39th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Annual precipitation
- Drier than 97%
- Rome St's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 53rd percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Rome St compares across U.S. station-mapped locations
Rome St's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
40 6th percentile score exceeds 6% 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 41°F (5°C) | 20°F (-6°C) | 31°F (-1°C) | 0.8" | 28.1 | 0.0 |
| February | 48°F (9°C) | 23°F (-5°C) | 35°F (2°C) | 0.6" | 24.3 | 0.0 |
| March | 56°F (13°C) | 28°F (-2°C) | 42°F (5°C) | 0.7" | 22.8 | 0.0 |
| April | 62°F (17°C) | 31°F (0°C) | 47°F (8°C) | 0.9" | 17.7 | 0.0 |
| May | 72°F (22°C) | 39°F (4°C) | 56°F (13°C) | 1.2" | 6.5 | 1.2 |
| June | 82°F (28°C) | 46°F (8°C) | 64°F (18°C) | 1.0" | 0.9 | 8.0 |
| July | 94°F (34°C) | 53°F (12°C) | 74°F (23°C) | 0.3" | 0.0 | 23.8 |
| August | 92°F (33°C) | 51°F (11°C) | 72°F (22°C) | 0.2" | 0.1 | 21.0 |
| September | 82°F (28°C) | 42°F (6°C) | 62°F (17°C) | 0.4" | 3.1 | 5.8 |
| October | 67°F (19°C) | 32°F (0°C) | 50°F (10°C) | 0.7" | 15.6 | 0.2 |
| November | 51°F (11°C) | 24°F (-5°C) | 37°F (3°C) | 0.5" | 24.5 | 0.0 |
| December | 40°F (5°C) | 19°F (-7°C) | 30°F (-1°C) | 0.8" | 28.0 | 0.0 |
The year, day by day
Rome St works both ends of the calendar. Normal highs climb to 96°F by July 23 and hold at or above 90°F on 54 dates, then normal lows drop to freezing or below on 188 dates, bottoming at 18°F around December 18.
When the heat sits
Normal highs reach 90°F from July 2 through August 24, covering 54 dates. The broader mild season, normal highs of 70°F or more, runs May 9 to October 9.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
The normal low stays at or below 32°F into April 21, then returns to freezing around October 17, covering 188 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 21, when 29% of years recorded at least a hundredth of an inch. The driest is August 13 at 8%. Summed across the calendar, that is about 76 wet dates a year.
The widest day
July 20 carries the biggest normal gap between afternoon and dawn, 41°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Rome St.
Where Rome St Stands Nationally
Aridity defines the water calendar: about 8 inches in a normal year lands this among the driest tenth of ranked stations.
Day-to-night contrast is extreme by national standards — the widest normal daily swing reaches about 41°F, sharper than nine in ten ranked stations see.
Rome St earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall
8.6 days with precipitation
7.4 days with precipitation
8.3 days with precipitation
8.7 days with precipitation
8.8 days with precipitation
5.0 days with precipitation
2.8 days with precipitation
2.1 days with precipitation
3.5 days with precipitation
5.1 days with precipitation
6.7 days with precipitation
9.3 days with precipitation
Rome St spreads its precipitation across the year
Neither half of the year dominates here: June through August take 18% of the annual total and December through February 27%, with neither reaching the 35% that would mark a distinct wet season. Rome St has no dry season to plan around, though it does carry a 43.9°F seasonal spread.
The gap between the wettest and driest month still matters: May averages 1.2" and August 0.2". The three wettest months together take 38% 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.
Rome St is dry, and what does fall arrives gently
Only about 76 days a year record measurable precipitation here, 21% of the calendar, and they carry 8.2" between them. At roughly 0.11 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is December at about 9 wet days; the driest is August at about 2.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Frost Dates & Growing Season
First Fall Freeze
September 21
50% probability date
Last Spring Freeze
May 26
50% probability date
Growing Season
118 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,152
Higher = more heating needed
Cooling Degree Days
658
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Rome St 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 (50°F here).
- Cedar Rapids, IA 50°F · 0.0°F off
- Centerville, IA 50°F · 0.0°F off
- Chalmers, IN 50°F · 0.0°F off
- Coulee Dam, WA 50°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (8.2" here), excluding temperature-peer places.
- Coalinga, CA 8.2" · 0.0" off
- Litchfield Park, AZ 8.2" · 0.0" off
- Marysvale, UT 8.2" · 0.0" off
- Idaho Falls, ID 8.2" · 0.0" off
Scarce-water calendar
Where Rome St's limited precipitation lands
heating led · dry · mid swing
Rome St's energy balance leans toward cold weather: 6,152 annual heating degree days against 658 for cooling. Its 43.9°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 118 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
July and December mark the typical warm and cold ends of the calendar in Rome St's middle-range seasonal profile. The measured spread is 43.9°F. The annual average is 50°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Rome St's cold-season load does not imply a wet climate. Annual precipitation is 8.2 inches, which places the station in PlainClimate's dry range. Snowfall is not added to the interpretation because its annual value is missing. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
Rome St wettest normal
May
May concentrates the scarce annual total (8.2 inches).
Rome St driest normal
August
August is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Rome St's climate
How dry is Rome St? ▼
How many days above 90°F does Rome St get? ▼
How much energy does heating and cooling require in Rome St? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Rome St's primary station: ROME ST AP (USW00094107). 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 Rome St; 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 Rome St 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.