Climate Comfort Score
54/100
Moderate
NOAA 1991–2020 normals 40°F annual avg Public-domain federal data
Errol, NH Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 40°F
- Avg annual temp
- 54/100
- Comfort score
- 44.6"
- Annual precip
- 124d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Errol
Errol, New Hampshire averages 40°F a year and scores 54/100 on the comfort index - moderate, milder than 27% of U.S. cities.
- 40°F
- yearly average temperature, NOAA normal
- 54/100
- comfort score, milder than 27% of U.S. cities
- 44.6"
- precipitation, annual total
- 124 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
40°F (4°C)
Avg High
51°F
Avg Low
28°F
Annual Precip
44.6"
Comfort Score
54/100
Moderate
Avg Annual Temperature
40°F
30-year mean (NOAA NCEI)
Annual Precipitation
44.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Errol) 54.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Errol area.
How Errol compares to every U.S. city
Errol's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
54 Top 73% higher than 27% 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 Errol
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Errol, the NOAA 1991-2020 normal captures average conditions across that spread - notably, the most recent decade runs warmer than the 30-year mean itself.
- 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 | 23°F (-5°C) | 1°F (-17°C) | 12°F (-11°C) | 3.0" | 31.0 | 0.0 |
| February | 26°F (-3°C) | -1°F (-18°C) | 13°F (-11°C) | 2.6" | 28.0 | 0.0 |
| March | 36°F (2°C) | 11°F (-11°C) | 23°F (-5°C) | 2.8" | 30.3 | 0.0 |
| April | 49°F (9°C) | 26°F (-3°C) | 37°F (3°C) | 3.5" | 23.0 | 0.0 |
| May | 63°F (17°C) | 39°F (4°C) | 51°F (10°C) | 3.6" | 7.7 | 0.0 |
| June | 72°F (22°C) | 48°F (9°C) | 60°F (16°C) | 4.8" | 1.0 | 0.0 |
| July | 77°F (25°C) | 52°F (11°C) | 65°F (18°C) | 4.1" | 0.0 | 1.0 |
| August | 75°F (24°C) | 50°F (10°C) | 63°F (17°C) | 4.2" | 0.0 | 0.0 |
| September | 68°F (20°C) | 43°F (6°C) | 56°F (13°C) | 3.6" | 4.0 | 0.0 |
| October | 55°F (13°C) | 32°F (0°C) | 44°F (6°C) | 5.1" | 14.8 | 0.0 |
| November | 41°F (5°C) | 23°F (-5°C) | 32°F (0°C) | 3.5" | 26.7 | 0.0 |
| December | 29°F (-1°C) | 10°F (-12°C) | 20°F (-7°C) | 3.8" | 30.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 3.0"
February 2.6"
March 2.8"
April 3.5"
May 3.6"
June 4.8"
July 4.1"
August 4.2"
September 3.6"
October 5.1"
November 3.5"
December 3.8"
Frost Dates & Growing Season
First Fall Freeze
September 22
50% probability date
Last Spring Freeze
May 21
50% probability date
Growing Season
124 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,364
Higher = more heating needed
Cooling Degree Days
123
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Errol's climate means for you
Errol runs 40°F a year - peaking in July, coldest in January.
- Gardeners get about 124 frost-free days, with the last spring freeze near May 21 - plan the planting calendar around it, not the regional average.
- Energy bills track 9,364 heating and 123 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: Errol, NH
An annual average temperature of 40°F, ranging from a mean daily high of 51°F to a mean daily low of 28°F is what the NOAA 1991–2020 climate normals report for Errol, New Hampshire. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00272846 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Errol averages 44.6 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 124 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 21 and the first fall freeze near September 22. As for energy demand, 9,364 heating degree days and 123 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Errol scores 54/100 (Moderate), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Errol, NH? ▼
The average annual temperature in Errol, New Hampshire is 40°F. The warmest month averages 77°F (25°C) and the coldest averages -1°F (-18°C).
How much rain does Errol get? ▼
Errol receives 44.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Errol? ▼
Errol has a climate comfort score of 54/100 (Moderate), milder than 27% of U.S. cities in the PlainClimate database.
When is the growing season in Errol? ▼
Errol has approximately 124 frost-free days per year, with the last spring freeze around May 21 and the first fall freeze around September 22.
How much energy does heating and cooling require in Errol? ▼
Errol has 9,364 heating degree days and 123 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 Errol climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00272846 near Errol.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00272846. 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.