Climate Comfort Score
39/100
Below Average
NOAA 1991–2020 normals 43°F annual avg Public-domain federal data
- 43°F
- Avg annual temp
- 39/100
- Comfort score
- 104d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Powell
Powell, Idaho averages 43°F a year and scores 39/100 on the comfort index - below average, milder than 4% of U.S. cities.
- 43°F
- yearly average temperature, NOAA normal
- 39/100
- comfort score, milder than 4% of U.S. cities
- 104 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
43°F (6°C)
Avg High
55°F
Avg Low
30°F
Annual Precip
N/A
Comfort Score
39/100
Below Average
Avg Annual Temperature
43°F
30-year mean (NOAA NCEI)
Annual Precipitation
N/A
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Powell) 39.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Below Average for the Powell area.
How Powell compares to every U.S. city
Powell's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
39 Top 96% higher than 4% 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 Powell
MethodologyZooming out from Powell's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
- 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 | 32°F (0°C) | 18°F (-8°C) | 25°F (-4°C) | N/A | 31.0 | 0.0 |
| February | 37°F (3°C) | 18°F (-8°C) | 28°F (-2°C) | N/A | 27.9 | 0.0 |
| March | 46°F (8°C) | 24°F (-5°C) | 35°F (1°C) | N/A | 30.2 | 0.0 |
| April | 53°F (12°C) | 29°F (-2°C) | 41°F (5°C) | N/A | 24.6 | 0.0 |
| May | 64°F (18°C) | 35°F (2°C) | 50°F (10°C) | N/A | 12.1 | 0.3 |
| June | 71°F (22°C) | 42°F (6°C) | 57°F (14°C) | N/A | 1.9 | 1.2 |
| July | 83°F (28°C) | 46°F (8°C) | 64°F (18°C) | N/A | 0.1 | 7.4 |
| August | 82°F (28°C) | 44°F (6°C) | 63°F (17°C) | N/A | 1.0 | 7.7 |
| September | 71°F (21°C) | 37°F (3°C) | 54°F (12°C) | N/A | 10.0 | 1.0 |
| October | 54°F (12°C) | 30°F (-1°C) | 42°F (5°C) | N/A | 21.5 | 0.0 |
| November | 38°F (3°C) | 24°F (-4°C) | 31°F (-1°C) | N/A | 27.5 | 0.0 |
| December | 30°F (-1°C) | 18°F (-8°C) | 24°F (-5°C) | N/A | 30.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January N/A
February N/A
March N/A
April N/A
May N/A
June N/A
July N/A
August N/A
September N/A
October N/A
November N/A
December N/A
Frost Dates & Growing Season
First Fall Freeze
September 12
50% probability date
Last Spring Freeze
May 31
50% probability date
Growing Season
104 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,242
Higher = more heating needed
Cooling Degree Days
124
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Powell's climate means for you
Powell runs 43°F a year - peaking in July, coldest in December.
- Gardeners get about 104 frost-free days, with the last spring freeze near May 31 - plan the planting calendar around it, not the regional average.
- Energy bills track 8,242 heating and 124 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: Powell, ID
In Powell, Idaho, the NOAA 1991–2020 climate normals put the annual average temperature at 43°F, ranging from a mean daily high of 55°F to a mean daily low of 30°F. July is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00107320, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Powell averages an uncharted amount of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 104 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 31 and the first fall freeze near September 12. As for energy demand, 8,242 heating degree days and 124 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Powell scores 39/100 (Below Average), 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 Powell, ID? ▼
The average annual temperature in Powell, Idaho is 43°F. The warmest month averages 83°F (28°C) and the coldest averages 18°F (-8°C).
How much rain does Powell get? ▼
Powell receives an unknown amount of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Powell? ▼
Powell has a climate comfort score of 39/100 (Below Average), milder than 4% of U.S. cities in the PlainClimate database.
When is the growing season in Powell? ▼
Powell has approximately 104 frost-free days per year, with the last spring freeze around May 31 and the first fall freeze around September 12.
How much energy does heating and cooling require in Powell? ▼
Powell has 8,242 heating degree days and 124 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 Powell climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00107320 near Powell.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00107320. 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.