Climate Comfort Score
68/100
Good
NOAA 1991–2020 normals 55°F annual avg Public-domain federal data
Brownlee Dam, ID Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 55°F
- Avg annual temp
- 68/100
- Comfort score
- 14.8"
- Annual precip
- 217d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Brownlee Dam
Brownlee Dam, Idaho averages 55°F a year and scores 68/100 on the comfort index - good, milder than 58% of U.S. cities.
- 55°F
- yearly average temperature, NOAA normal
- 68/100
- comfort score, milder than 58% of U.S. cities
- 14.8"
- precipitation, annual total
- 217 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
55°F (13°C)
Avg High
66°F
Avg Low
44°F
Annual Precip
14.8"
Comfort Score
68/100
Good
Avg Annual Temperature
55°F
30-year mean (NOAA NCEI)
Annual Precipitation
14.8"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Brownlee Dam) 68.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Brownlee Dam area.
How Brownlee Dam compares to every U.S. city
Brownlee Dam's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
68 Top 42% higher than 58% 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 Brownlee Dam
MethodologyZooming out from Brownlee Dam'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 | 39°F (4°C) | 28°F (-2°C) | 33°F (1°C) | 1.9" | 23.0 | 0.0 |
| February | 45°F (7°C) | 30°F (-1°C) | 37°F (3°C) | 1.3" | 17.4 | 0.0 |
| March | 55°F (13°C) | 35°F (2°C) | 45°F (7°C) | 1.5" | 5.9 | 0.0 |
| April | 64°F (18°C) | 42°F (5°C) | 53°F (12°C) | 1.4" | 1.3 | 0.0 |
| May | 74°F (23°C) | 50°F (10°C) | 62°F (17°C) | 1.8" | 0.0 | 3.0 |
| June | 83°F (28°C) | 56°F (13°C) | 69°F (21°C) | 1.2" | 0.0 | 7.6 |
| July | 95°F (35°C) | 64°F (18°C) | 80°F (26°C) | 0.4" | 0.0 | 24.6 |
| August | 94°F (35°C) | 63°F (17°C) | 79°F (26°C) | 0.2" | 0.0 | 23.7 |
| September | 83°F (28°C) | 55°F (13°C) | 69°F (21°C) | 0.5" | 0.0 | 9.3 |
| October | 66°F (19°C) | 45°F (7°C) | 56°F (13°C) | 1.1" | 0.4 | 0.2 |
| November | 50°F (10°C) | 35°F (2°C) | 42°F (6°C) | 1.4" | 8.7 | 0.0 |
| December | 40°F (4°C) | 29°F (-2°C) | 34°F (1°C) | 2.0" | 22.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.9"
13.3 days with precipitation
February 1.3"
9.4 days with precipitation
March 1.5"
10.8 days with precipitation
April 1.4"
10.6 days with precipitation
May 1.8"
9.5 days with precipitation
June 1.2"
7.9 days with precipitation
July 0.4"
2.9 days with precipitation
August 0.2"
2.3 days with precipitation
September 0.5"
3.0 days with precipitation
October 1.1"
6.8 days with precipitation
November 1.4"
10.4 days with precipitation
December 2.0"
12.6 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 5
50% probability date
Last Spring Freeze
April 2
50% probability date
Growing Season
217 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
4,922
Higher = more heating needed
Cooling Degree Days
1,299
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Brownlee Dam's climate means for you
Brownlee Dam runs 55°F a year - peaking in July, coldest in January.
- Gardeners get about 217 frost-free days, with the last spring freeze near April 2 - plan the planting calendar around it, not the regional average.
- Energy bills track 4,922 heating and 1,299 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: Brownlee Dam, ID
An annual average temperature of 55°F, ranging from a mean daily high of 66°F to a mean daily low of 44°F is what the NOAA 1991–2020 climate normals report for Brownlee Dam, Idaho. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00101180 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. Brownlee Dam sees about 14.8 inches of precipitation a year, predominantly as rainfall. The frost-free season averages 217 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 2 and the first fall freeze near November 5. On the energy side, 4,922 heating degree days and 1,299 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Brownlee Dam scores 68/100 (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 Brownlee Dam, ID? ▼
The average annual temperature in Brownlee Dam, Idaho is 55°F. The warmest month averages 95°F (35°C) and the coldest averages 28°F (-2°C).
How much rain does Brownlee Dam get? ▼
Brownlee Dam receives 14.8 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Brownlee Dam? ▼
Brownlee Dam has a climate comfort score of 68/100 (Good), milder than 58% of U.S. cities in the PlainClimate database.
When is the growing season in Brownlee Dam? ▼
Brownlee Dam has approximately 217 frost-free days per year, with the last spring freeze around April 2 and the first fall freeze around November 5.
How much energy does heating and cooling require in Brownlee Dam? ▼
Brownlee Dam has 4,922 heating degree days and 1,299 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 Brownlee Dam climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00101180 near Brownlee Dam.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00101180. 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.