Climate Comfort Score
53/100
Moderate
NOAA 1991–2020 normals 51°F annual avg Public-domain federal data
Danbury, CT Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 51°F
- Avg annual temp
- 53/100
- Comfort score
- 53.0"
- Annual precip
- 183d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Danbury
Danbury, Connecticut averages 51°F a year and scores 53/100 on the comfort index - moderate, milder than 26% of U.S. cities.
- 51°F
- yearly average temperature, NOAA normal
- 53/100
- comfort score, milder than 26% of U.S. cities
- 53.0"
- annual precipitation · 49" snow
- 183 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
51°F (11°C)
Avg High
61°F
Avg Low
42°F
Annual Precip
53.0"
Annual Snow
49.3"
Comfort Score
53/100
Moderate
Avg Annual Temperature
51°F
30-year mean (NOAA NCEI)
Annual Precipitation
53.0"
Plus 49.3" of snow
Comfort score vs national 100-point ceiling (Danbury) 53.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Danbury area.
How Danbury compares to every U.S. city
Danbury'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 Danbury
MethodologyDanbury'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 | 36°F (2°C) | 21°F (-6°C) | 28°F (-2°C) | 3.7" | 15.7" | 27.0 | 0.0 |
| February | 39°F (4°C) | 22°F (-6°C) | 30°F (-1°C) | 3.3" | 11.0" | 24.7 | 0.0 |
| March | 48°F (9°C) | 29°F (-2°C) | 38°F (4°C) | 4.4" | 10.4" | 21.8 | 0.0 |
| April | 61°F (16°C) | 39°F (4°C) | 50°F (10°C) | 4.2" | 1.7" | 7.2 | 0.4 |
| May | 72°F (22°C) | 49°F (10°C) | 60°F (16°C) | 4.2" | 0.0" | 0.4 | 1.7 |
| June | 80°F (27°C) | 59°F (15°C) | 69°F (21°C) | 4.8" | 0.0" | 0.0 | 4.1 |
| July | 85°F (29°C) | 64°F (18°C) | 75°F (24°C) | 5.0" | 0.0" | 0.0 | 8.6 |
| August | 82°F (28°C) | 63°F (17°C) | 72°F (22°C) | 4.9" | 0.0" | 0.0 | 4.7 |
| September | 75°F (24°C) | 55°F (13°C) | 65°F (18°C) | 4.9" | 0.0" | 0.0 | 0.7 |
| October | 63°F (17°C) | 43°F (6°C) | 53°F (12°C) | 5.0" | 0.0" | 4.3 | 0.0 |
| November | 50°F (10°C) | 34°F (1°C) | 42°F (6°C) | 4.0" | 1.9" | 15.2 | 0.0 |
| December | 40°F (5°C) | 26°F (-3°C) | 33°F (1°C) | 4.6" | 8.6" | 25.3 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 3.7"
Snow: 15.7"
12.0 days with precipitation
February 3.3"
Snow: 11.0"
10.8 days with precipitation
March 4.4"
Snow: 10.4"
12.3 days with precipitation
April 4.2"
Snow: 1.7"
12.1 days with precipitation
May 4.2"
13.1 days with precipitation
June 4.8"
12.0 days with precipitation
July 5.0"
10.7 days with precipitation
August 4.9"
9.6 days with precipitation
September 4.9"
9.6 days with precipitation
October 5.0"
10.2 days with precipitation
November 4.0"
Snow: 1.9"
9.9 days with precipitation
December 4.6"
Snow: 8.6"
12.0 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 20
50% probability date
Last Spring Freeze
April 20
50% probability date
Growing Season
183 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,777
Higher = more heating needed
Cooling Degree Days
839
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Danbury's climate means for you
Danbury runs 51°F a year - peaking in July, coldest in January.
- Gardeners get about 183 frost-free days, with the last spring freeze near April 20 - plan the planting calendar around it, not the regional average.
- Energy bills track 5,777 heating and 839 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: Danbury, CT
In Danbury, Connecticut, the NOAA 1991–2020 climate normals put the annual average temperature at 51°F, ranging from a mean daily high of 61°F to a mean daily low of 42°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USC00061762, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Danbury receives roughly 53.0 inches of precipitation each year, with 49.3 inches typically falling as snow. The frost-free season averages 183 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 20 and the first fall freeze near October 20. For energy use, 5,777 heating degree days and 839 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Danbury scores 53/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Shoulder seasons bring the mildest highs and lows in the monthly tables above, summer brings July-driven heat, and winter brings January-driven cold - use that rhythm for planning. These figures are thirty-year averages rather than forecasts, so a specific year may still run warmer, cooler, wetter, or drier than what's shown.
Frequently Asked Questions
What is the average temperature in Danbury, CT? ▼
The average annual temperature in Danbury, Connecticut is 51°F. The warmest month averages 85°F (29°C) and the coldest averages 21°F (-6°C).
How much rain does Danbury get? ▼
Danbury receives 53.0 inches of precipitation annually, including 49.3 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Danbury? ▼
Danbury 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 Danbury? ▼
Danbury has approximately 183 frost-free days per year, with the last spring freeze around April 20 and the first fall freeze around October 20.
How much energy does heating and cooling require in Danbury? ▼
Danbury has 5,777 heating degree days and 839 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 Danbury climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00061762 near Danbury.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00061762. 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.