Climate Comfort Score
44/100
Moderate
NOAA 1991–2020 normals 54°F annual avg Public-domain federal data
Hermiston Muni, OR Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 54°F
- Avg annual temp
- 44/100
- Comfort score
- 8.6"
- Annual precip
- 167d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Hermiston Muni
Hermiston Muni, Oregon averages 54°F a year and scores 44/100 on the comfort index - moderate, milder than 8% of U.S. cities.
- 54°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, milder than 8% of U.S. cities
- 8.6"
- yearly precipitation total
- 167 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
54°F (12°C)
Avg High
67°F
Avg Low
41°F
Annual Precip
8.6"
Comfort Score
44/100
Moderate
Avg Annual Temperature
54°F
30-year mean (NOAA NCEI)
Annual Precipitation
8.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Hermiston Muni) 44.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Hermiston Muni area.
How Hermiston Muni compares to every U.S. city
Hermiston Muni's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 Top 92% higher than 8% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Hermiston Muni
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Hermiston Muni, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
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) | 29°F (-2°C) | 36°F (2°C) | 1.1" | 21.1 | 0.0 |
| February | 49°F (10°C) | 29°F (-2°C) | 39°F (4°C) | 0.9" | 19.9 | 0.0 |
| March | 59°F (15°C) | 34°F (1°C) | 46°F (8°C) | 0.8" | 15.8 | 0.0 |
| April | 67°F (19°C) | 39°F (4°C) | 53°F (12°C) | 0.8" | 7.1 | 0.0 |
| May | 76°F (25°C) | 46°F (8°C) | 61°F (16°C) | 0.8" | 1.4 | 2.3 |
| June | 82°F (28°C) | 53°F (12°C) | 68°F (20°C) | 0.6" | 0.0 | 5.9 |
| July | 93°F (34°C) | 59°F (15°C) | 76°F (24°C) | 0.1" | 0.0 | 20.1 |
| August | 91°F (33°C) | 57°F (14°C) | 74°F (23°C) | 0.2" | 0.0 | 18.0 |
| September | 81°F (27°C) | 48°F (9°C) | 65°F (18°C) | 0.3" | 0.4 | 3.9 |
| October | 67°F (19°C) | 39°F (4°C) | 53°F (12°C) | 0.8" | 8.5 | 0.0 |
| November | 51°F (10°C) | 32°F (0°C) | 42°F (5°C) | 1.1" | 17.2 | 0.0 |
| December | 42°F (6°C) | 28°F (-2°C) | 35°F (2°C) | 1.1" | 23.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.1"
9.5 days with precipitation
February 0.9"
8.4 days with precipitation
March 0.8"
8.3 days with precipitation
April 0.8"
6.5 days with precipitation
May 0.8"
7.7 days with precipitation
June 0.6"
5.3 days with precipitation
July 0.1"
1.5 days with precipitation
August 0.2"
1.9 days with precipitation
September 0.3"
2.8 days with precipitation
October 0.8"
7.5 days with precipitation
November 1.1"
10.3 days with precipitation
December 1.1"
10.5 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 10
50% probability date
Last Spring Freeze
April 26
50% probability date
Growing Season
167 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,859
Higher = more heating needed
Cooling Degree Days
841
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Hermiston Muni's climate means for you
Hermiston Muni runs 54°F a year - peaking in July, coldest in December.
- Gardeners get about 167 frost-free days, with the last spring freeze near April 26 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,859 heating and 841 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Hermiston Muni, OR
Hermiston Muni, Oregon runs an annual average of 54°F, ranging from a mean daily high of 67°F to a mean daily low of 41°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while December is the coldest. Drawn from station USW00004113, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Hermiston Muni averages 8.6 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 167 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 26 and the first fall freeze near October 10. As for energy demand, 4,859 heating degree days and 841 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Hermiston Muni scores 44/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and December-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Hermiston Muni, OR? ▼
The average annual temperature in Hermiston Muni, Oregon is 54°F. The warmest month averages 93°F (34°C) and the coldest averages 28°F (-2°C).
How much rain does Hermiston Muni get? ▼
Hermiston Muni receives 8.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Hermiston Muni? ▼
Hermiston Muni has a climate comfort score of 44/100 (Moderate), milder than 8% of U.S. cities in the PlainClimate database.
When is the growing season in Hermiston Muni? ▼
Hermiston Muni has approximately 167 frost-free days per year, with the last spring freeze around April 26 and the first fall freeze around October 10.
How much energy does heating and cooling require in Hermiston Muni? ▼
Hermiston Muni has 4,859 heating degree days and 841 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Hermiston Muni climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USW00004113 near Hermiston Muni.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USW00004113. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.