Saint Helens Rfd, OR Climate: Temperature by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Saint Helens Rfd's primary NOAA station, SAINT HELENS RFD.
The climate verdict for Saint Helens Rfd
A compact 29.5°F seasonal swing gives Saint Helens Rfd, Oregon a steadier-than-extreme annual shape. NOAA reports an annual average of 52°F. August is the warmest month at 67°F and December the coldest at 38°F.
- 52°F
- average temperature, NOAA 1991-2020 normal
- 203 days
- frost-free growing season
Saint Helens Rfd: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00357466 · Saint Helens Rfd, OR 52°F mean
TEMP-COOL · RANK-MID · PHOTO-FINISH · PRCP-UNK · SWING-NARROW · COMF-UNK · LOAD-HEAT · STN-1 · BOOK-PART
- TEMP-COOL 52°F
- RANK-MID #3,225
- PHOTO-FINISH ≈ Mayfield Pwr Plt
- PRCP-UNK Rain n/a
- SWING-NARROW 30°F
- COMF-UNK Comfort n/a
- LOAD-HEAT 5,158 HDD
- STN-1 USC00357466
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Mayfield Pwr Plt, WA (+ 0.1 °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.
- Saint Helens Rfd (this station) 52°F
- Hot Roan Mtn, TN 52°F
- Near Mayfield Pwr Plt, WA 52°F
- Cold Headworks Portl…, OR 51°F
- Near Swannanoa, NC 51°F
Climate Living Index · Saint Helens Rfd
Saint Helens Rfd: 72/100 · grade B
Saint Helens Rfd publishes 3 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 3 missing weights rescale to 100.
PlainClimate-derived for Saint Helens Rfd, 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 | 203 days/year | 66/100 · C |
| Annual temperature balance | 51.6°F · 15.9° from 67.5°F | 47/100 · D |
Saint Helens Rfd · 2026-08-04 · NOAA NCEI Climate Normals · method .
National standing · heating-led station
Where Saint Helens Rfd sits across the climate record
Available NOAA 1991–2020 fields for Saint Helens Rfd are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- 47th percentile warmth
- Mid-pack annual mean versus 6,861 station normals.
- Seasonal temperature swing
- Narrower than 91%
- Warmest-to-coldest month gap for Saint Helens Rfd 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 | 43°F (6°C) | 33°F (0°C) | 38°F (3°C) | N/A | 13.6 | 0.0 |
| February | 47°F (8°C) | 33°F (1°C) | 40°F (5°C) | N/A | 11.7 | 0.0 |
| March | 53°F (12°C) | 36°F (2°C) | 45°F (7°C) | N/A | 7.8 | 0.0 |
| April | 59°F (15°C) | 40°F (5°C) | 49°F (10°C) | N/A | 3.4 | 0.1 |
| May | 67°F (19°C) | 46°F (8°C) | 56°F (13°C) | N/A | 1.2 | 1.1 |
| June | 72°F (22°C) | 50°F (10°C) | 61°F (16°C) | N/A | 0.1 | 2.2 |
| July | 79°F (26°C) | 55°F (13°C) | 67°F (19°C) | N/A | 0.0 | 6.6 |
| August | 79°F (26°C) | 55°F (13°C) | 67°F (19°C) | N/A | 0.0 | 7.0 |
| September | 74°F (23°C) | 52°F (11°C) | 63°F (17°C) | N/A | 0.0 | 2.6 |
| October | 61°F (16°C) | 45°F (7°C) | 53°F (11°C) | N/A | 1.1 | 0.0 |
| November | 49°F (9°C) | 38°F (3°C) | 43°F (6°C) | N/A | 7.5 | 0.0 |
| December | 42°F (6°C) | 33°F (1°C) | 38°F (3°C) | N/A | 12.2 | 0.0 |
The year, day by day
The calendar barely moves in Saint Helens Rfd: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 32°F near December 24 and 81°F near July 30.
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 32°F around December 24.
The widest day
August 5 carries the biggest normal gap between afternoon and dawn, 25°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Saint Helens Rfd.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
November 7
50% probability date
Last Spring Freeze
April 18
50% probability date
Growing Season
203 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,158
Higher = more heating needed
Cooling Degree Days
305
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside OR closest to Saint Helens Rfd 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 (52°F here).
- Amity, MO 52°F · 0.0°F off
- Carmel, IN 52°F · 0.0°F off
- Eau Claire, MI 52°F · 0.0°F off
- Fairbury, NE 52°F · 0.0°F off
Data-derived climate profile
How Saint Helens Rfd's climate pattern fits together
heating led · low swing
Heating is the larger measured load in Saint Helens Rfd, at 5,158 degree days versus 305 for cooling. Unlike a strongly continental record, however, its 29.5°F month-to-month range is compact; persistent cool-season demand matters more than a dramatic summer-to-winter reversal.
Saint Helens Rfd's frost-free season lasts about 203 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
Temperature varies within a narrow 29.5°F band across the normal year. August and December mark the typical warm and cold ends of the calendar. The annual average is 52°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A moisture-range label is withheld because Saint Helens Rfd'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 Saint Helens Rfd'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 Saint Helens Rfd, not an official NOAA class or a year-ahead forecast.
Questions about Saint Helens Rfd's climate
How much energy does heating and cooling require in Saint Helens Rfd? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Saint Helens Rfd's primary station: SAINT HELENS RFD (USC00357466). 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 Saint Helens Rfd; 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 Saint Helens Rfd 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.