Climate Comfort Score
63/100
Good
NOAA 1991–2020 normals 54°F annual avg Public-domain federal data
Ice Harbor Dam, WA Climate
Pulled from NOAA NCEI 1991–2020 normals →: average temperature, precipitation, and comfort score
- 54°F
- Avg annual temp
- 63/100
- Comfort score
- 11.1"
- Annual precip
- 198d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Ice Harbor Dam
Ice Harbor Dam, Washington averages 54°F a year and scores 63/100 on the comfort index - good, milder than 47% of U.S. cities.
- 54°F
- yearly average temperature, NOAA normal
- 63/100
- comfort score, milder than 47% of U.S. cities
- 11.1"
- annual precipitation · 2" snow
- 198 days
- frost-free days per growing season
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
65°F
Avg Low
43°F
Annual Precip
11.1"
Annual Snow
2.0"
Comfort Score
63/100
Good
Avg Annual Temperature
54°F
30-year mean (NOAA NCEI)
Annual Precipitation
11.1"
Plus 2.0" of snow
Comfort score vs national 100-point ceiling (Ice Harbor Dam) 63.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Ice Harbor Dam area.
How Ice Harbor Dam compares to every U.S. city
Ice Harbor Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
63 Top 53% higher than 47% 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 Ice Harbor Dam
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Ice Harbor Dam captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 42°F (5°C) | 29°F (-2°C) | 35°F (2°C) | 1.4" | 0.2" | 19.3 | 0.0 |
| February | 48°F (9°C) | 30°F (-1°C) | 39°F (4°C) | 1.0" | 0.2" | 17.3 | 0.0 |
| March | 58°F (14°C) | 35°F (2°C) | 46°F (8°C) | 1.0" | 0.1" | 9.7 | 0.0 |
| April | 65°F (18°C) | 41°F (5°C) | 53°F (12°C) | 1.0" | 0.0" | 2.1 | 0.0 |
| May | 74°F (23°C) | 48°F (9°C) | 61°F (16°C) | 1.1" | 0.0" | 0.2 | 1.0 |
| June | 80°F (27°C) | 54°F (12°C) | 67°F (20°C) | 0.8" | 0.0" | 0.0 | 3.4 |
| July | 89°F (32°C) | 61°F (16°C) | 75°F (24°C) | 0.3" | 0.0" | 0.0 | 15.3 |
| August | 89°F (31°C) | 59°F (15°C) | 74°F (23°C) | 0.3" | 0.0" | 0.0 | 14.3 |
| September | 80°F (27°C) | 51°F (11°C) | 66°F (19°C) | 0.4" | 0.0" | 0.1 | 3.0 |
| October | 66°F (19°C) | 42°F (6°C) | 54°F (12°C) | 1.0" | 0.0" | 3.4 | 0.0 |
| November | 51°F (11°C) | 35°F (1°C) | 43°F (6°C) | 1.3" | 0.1" | 11.8 | 0.0 |
| December | 42°F (6°C) | 29°F (-2°C) | 36°F (2°C) | 1.4" | 1.4" | 20.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.4"
Snow: 0.2"
13.7 days with precipitation
February 1.0"
Snow: 0.2"
10.2 days with precipitation
March 1.0"
Snow: 0.1"
9.6 days with precipitation
April 1.0"
8.8 days with precipitation
May 1.1"
8.2 days with precipitation
June 0.8"
5.6 days with precipitation
July 0.3"
2.5 days with precipitation
August 0.3"
1.9 days with precipitation
September 0.4"
3.7 days with precipitation
October 1.0"
8.2 days with precipitation
November 1.3"
Snow: 0.1"
12.3 days with precipitation
December 1.4"
Snow: 1.4"
12.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 7
50% probability date
Growing Season
198 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,780
Higher = more heating needed
Cooling Degree Days
811
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Ice Harbor Dam's climate means for you
Ice Harbor Dam runs 54°F a year - peaking in July, coldest in January.
- Gardeners get about 198 frost-free days, with the last spring freeze near April 7 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,780 heating and 811 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: Ice Harbor Dam, WA
An annual average temperature of 54°F, ranging from a mean daily high of 65°F to a mean daily low of 43°F is what the NOAA 1991–2020 climate normals report for Ice Harbor Dam, Washington. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00453883 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Rainfall (and snow, where it falls) shapes day-to-day life here as much as temperature does. Ice Harbor Dam sees about 11.1 inches of precipitation a year, with 2.0 inches typically falling as snow. The frost-free season averages 198 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 7 and the first fall freeze near October 22. On the energy side, 4,780 heating degree days and 811 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Ice Harbor Dam scores 63/100 (Good), 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 January-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 Ice Harbor Dam, WA? ▼
The average annual temperature in Ice Harbor Dam, Washington is 54°F. The warmest month averages 89°F (32°C) and the coldest averages 29°F (-2°C).
How much rain does Ice Harbor Dam get? ▼
Ice Harbor Dam receives 11.1 inches of precipitation annually, including 2.0 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Ice Harbor Dam? ▼
Ice Harbor Dam has a climate comfort score of 63/100 (Good), milder than 47% of U.S. cities in the PlainClimate database.
When is the growing season in Ice Harbor Dam? ▼
Ice Harbor Dam has approximately 198 frost-free days per year, with the last spring freeze around April 7 and the first fall freeze around October 22.
How much energy does heating and cooling require in Ice Harbor Dam? ▼
Ice Harbor Dam has 4,780 heating degree days and 811 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 Ice Harbor Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00453883 near Ice Harbor Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00453883. 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.