Climate Comfort Score
53/100
Moderate
NOAA 1991–2020 normals 50°F annual avg Public-domain federal data
- 50°F
- Avg annual temp
- 53/100
- Comfort score
- 12.0"
- Annual precip
- 188d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Chelan
Chelan, Washington averages 50°F a year and scores 53/100 on the comfort index - moderate, milder than 26% of U.S. cities.
- 50°F
- annual average temperature (NOAA normal)
- 53/100
- comfort score, milder than 26% of U.S. cities
- 12.0"
- annual precipitation · 21" snow
- 188 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
50°F (10°C)
Avg High
61°F
Avg Low
39°F
Annual Precip
12.0"
Annual Snow
20.5"
Comfort Score
53/100
Moderate
Avg Annual Temperature
50°F
30-year mean (NOAA NCEI)
Annual Precipitation
12.0"
Plus 20.5" of snow
Comfort score vs national 100-point ceiling (Chelan) 53.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Chelan area.
How Chelan compares to every U.S. city
Chelan's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
53 Top 74% higher than 26% 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 Chelan
MethodologyChelan's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running 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 | 34°F (1°C) | 22°F (-6°C) | 28°F (-2°C) | 1.5" | 7.7" | 27.6 | 0.0 |
| February | 42°F (5°C) | 24°F (-4°C) | 33°F (1°C) | 1.2" | 2.0" | 22.2 | 0.0 |
| March | 52°F (11°C) | 30°F (-1°C) | 41°F (5°C) | 1.1" | 0.7" | 13.4 | 0.0 |
| April | 62°F (17°C) | 38°F (3°C) | 50°F (10°C) | 0.8" | 0.0" | 1.8 | 0.0 |
| May | 72°F (22°C) | 46°F (8°C) | 59°F (15°C) | 1.1" | 0.0" | 0.1 | 0.4 |
| June | 78°F (26°C) | 53°F (12°C) | 65°F (19°C) | 0.9" | 0.0" | 0.0 | 2.7 |
| July | 87°F (30°C) | 59°F (15°C) | 73°F (23°C) | 0.4" | 0.0" | 0.0 | 10.0 |
| August | 87°F (31°C) | 58°F (15°C) | 73°F (23°C) | 0.3" | 0.0" | 0.0 | 10.9 |
| September | 77°F (25°C) | 49°F (10°C) | 63°F (17°C) | 0.3" | 0.0" | 0.0 | 1.4 |
| October | 62°F (17°C) | 39°F (4°C) | 51°F (10°C) | 1.0" | 0.0" | 1.9 | 0.0 |
| November | 46°F (8°C) | 30°F (-1°C) | 38°F (3°C) | 1.5" | 1.4" | 15.0 | 0.0 |
| December | 35°F (2°C) | 23°F (-5°C) | 29°F (-2°C) | 1.8" | 8.7" | 27.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 1.5"
Snow: 7.7"
9.3 days with precipitation
February 1.2"
Snow: 2.0"
7.2 days with precipitation
March 1.1"
Snow: 0.7"
7.1 days with precipitation
April 0.8"
5.1 days with precipitation
May 1.1"
6.2 days with precipitation
June 0.9"
4.6 days with precipitation
July 0.4"
2.7 days with precipitation
August 0.3"
2.0 days with precipitation
September 0.3"
2.4 days with precipitation
October 1.0"
6.3 days with precipitation
November 1.5"
Snow: 1.4"
8.5 days with precipitation
December 1.8"
Snow: 8.7"
9.5 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 22
50% probability date
Last Spring Freeze
April 17
50% probability date
Growing Season
188 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
6,037
Higher = more heating needed
Cooling Degree Days
652
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Chelan's climate means for you
Chelan runs 50°F a year - peaking in July, coldest in January.
- Gardeners get about 188 frost-free days, with the last spring freeze near April 17 - plan the planting calendar around it, not the regional average.
- Energy bills track 6,037 heating and 652 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: Chelan, WA
In Chelan, Washington, the NOAA 1991–2020 climate normals put the annual average temperature at 50°F, ranging from a mean daily high of 61°F to a mean daily low of 39°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00451350, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Anyone planning to live, garden, or travel in Chelan should weigh precipitation alongside temperature: the annual average runs 12.0 inches, with 20.5 inches typically falling as snow. The frost-free season averages 188 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 17 and the first fall freeze near October 22. And on the energy front, 6,037 heating degree days and 652 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Chelan scores 53/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Chelan, WA? ▼
The average annual temperature in Chelan, Washington is 50°F. The warmest month averages 87°F (31°C) and the coldest averages 22°F (-6°C).
How much rain does Chelan get? ▼
Chelan receives 12.0 inches of precipitation annually, including 20.5 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Chelan? ▼
Chelan has a climate comfort score of 53/100 (Moderate), milder than 26% of U.S. cities in the PlainClimate database.
When is the growing season in Chelan? ▼
Chelan has approximately 188 frost-free days per year, with the last spring freeze around April 17 and the first fall freeze around October 22.
How much energy does heating and cooling require in Chelan? ▼
Chelan has 6,037 heating degree days and 652 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 Chelan climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00451350 near Chelan.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00451350. 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.