PlainClimate
NOAA 1991–2020 normals 48°F annual avg Public-domain federal data

Fitchburg, MA Climate

Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →

48°F
Avg annual temp
64/100
Comfort score
49.6"
Annual precip
161d
Growing season

30-year climate normals from 1 weather station (1991-2020).

The climate verdict for Fitchburg

Fitchburg, Massachusetts averages 48°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.

48°F
yearly average temperature, NOAA normal
64/100
comfort score, milder than 51% of U.S. cities
49.6"
yearly precipitation total
161 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

48°F (9°C)

Avg High

58°F

Avg Low

38°F

Annual Precip

49.6"

Comfort Score

64/100

Good

Climate Comfort Score

64/100

Good

Avg Annual Temperature

48°F

30-year mean (NOAA NCEI)

Annual Precipitation

49.6"

Liquid-equivalent total

Comfort score vs national 100-point ceiling (Fitchburg) 64.0%
National median (63)

PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Fitchburg area.

How Fitchburg compares to every U.S. city

Fitchburg's comfort score vs. all U.S. cities

PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals

64 Top 49% higher than 51% of 6,915 US cities

0–10: 0 US cities (0%). Below this entry. 10–20: 0 US cities (0%). Below this entry. 20–30: 58 US cities (1%). Below this entry. 30–40: 439 US cities (6%). Below this entry. 40–50: 1,302 US cities (19%). Below this entry. 50–60: 1,433 US cities (21%). Below this entry. 60–70: 1,357 US cities (20%). This entry sits in this band. 70–80: 1,102 US cities (16%). Above this entry. 80–90: 778 US cities (11%). Above this entry. 90–100: 420 US cities (6%). Above this entry. This city 0 100 every U.S. city, bucketed by value

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 Fitchburg

Methodology

How the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Fitchburg captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.

Warming context, U.S. vs global, with Paris reference lines Anomaly chart from 1900 to 2024. Local series shows warming of 0.11 °C per decade versus a global rate of 0.11 °C per decade (ratio 1.00). Paris Agreement thresholds at 1.5 and 2.0 °C are dashed. -1.0°C -0.5°C +0.0°C +0.5°C +1.0°C +1.5°C +2.0°C +2.5°C Paris 1.5°C Paris 2.0°C 1900192019401960198020002020
  • 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
Sources: NOAA NCEI, NASA GISTEMP. Paris thresholds per IPCC AR6 WG1.

Monthly Temperatures

Average daily high and low temperatures by month

Month Avg High Avg Low Mean
January 34°F (1°C) 15°F (-10°C) 24°F (-4°C)
February 35°F (2°C) 14°F (-10°C) 25°F (-4°C)
March 44°F (7°C) 23°F (-5°C) 34°F (1°C)
April 57°F (14°C) 35°F (1°C) 46°F (8°C)
May 67°F (19°C) 46°F (8°C) 57°F (14°C)
June 76°F (24°C) 55°F (13°C) 66°F (19°C)
July 81°F (27°C) 61°F (16°C) 71°F (22°C)
August 79°F (26°C) 59°F (15°C) 69°F (21°C)
September 73°F (23°C) 51°F (11°C) 62°F (17°C)
October 60°F (16°C) 39°F (4°C) 49°F (10°C)
November 48°F (9°C) 31°F (-1°C) 39°F (4°C)
December 37°F (3°C) 22°F (-6°C) 30°F (-1°C)

Monthly Precipitation

Average monthly rainfall

January 3.5"
February 3.3"
March 4.3"
April 4.2"
May 3.7"
June 4.3"
July 3.7"
August 4.3"
September 4.3"
October 5.3"
November 3.9"
December 4.9"

Frost Dates & Growing Season

First Fall Freeze

October 9

50% probability date

Last Spring Freeze

May 1

50% probability date

Growing Season

161 days

Heating & Cooling Degree Days

Annual totals indicate energy demand for heating and cooling

Heating Degree Days

6,760

Higher = more heating needed

Cooling Degree Days

427

Higher = more cooling needed

Warmest Month

July

Coldest Month

January

What Fitchburg's climate means for you

Fitchburg runs 48°F a year - peaking in July, coldest in January.

  • Gardeners get about 161 frost-free days, with the last spring freeze near May 1 - plan the planting calendar around it, not the regional average.
  • Energy bills track 6,760 heating and 427 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: Fitchburg, MA

Fitchburg, Massachusetts runs an annual average of 48°F, ranging from a mean daily high of 58°F to a mean daily low of 38°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00192807, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.

Fitchburg averages 49.6 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 161 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 1 and the first fall freeze near October 9. As for energy demand, 6,760 heating degree days and 427 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Fitchburg scores 64/100 (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 Fitchburg, MA?
The average annual temperature in Fitchburg, Massachusetts is 48°F. The warmest month averages 81°F (27°C) and the coldest averages 14°F (-10°C).
How much rain does Fitchburg get?
Fitchburg receives 49.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Fitchburg?
Fitchburg has a climate comfort score of 64/100 (Good), milder than 51% of U.S. cities in the PlainClimate database.
When is the growing season in Fitchburg?
Fitchburg has approximately 161 frost-free days per year, with the last spring freeze around May 1 and the first fall freeze around October 9.
How much energy does heating and cooling require in Fitchburg?
Fitchburg has 6,760 heating degree days and 427 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 Fitchburg climate data come from?
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00192807 near Fitchburg.

Data Sources

Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00192807. For informational purposes only.

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.