Climate Comfort Score
64/100
Good
NOAA 1991–2020 normals 47°F annual avg 2 stations
Anamosa, IA Climate
Average temperature, precipitation, and a comfort score, drawn from NOAA NCEI 1991–2020 normals →
- 47°F
- Avg annual temp
- 64/100
- Comfort score
- 40.1"
- Annual precip
- 156d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Anamosa
Anamosa, Iowa averages 47°F a year and scores 64/100 on the comfort index - good, milder than 51% of U.S. cities.
- 47°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, milder than 51% of U.S. cities
- 40.1"
- annual precipitation
- 156 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
47°F (8°C)
Avg High
58°F
Avg Low
36°F
Annual Precip
40.1"
Comfort Score
64/100
Good
Avg Annual Temperature
47°F
30-year mean (NOAA NCEI)
Annual Precipitation
40.1"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Anamosa) 64.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Anamosa area.
How Anamosa compares to every U.S. city
Anamosa'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
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 Anamosa
MethodologyThe chart below traces how the U.S. land temperature anomaly has moved against the global mean since 1900. For Anamosa, 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 | 27°F (-3°C) | 9°F (-13°C) | 18°F (-8°C) | 1.5" | 30.3 | 0.0 |
| February | 32°F (0°C) | 12°F (-11°C) | 22°F (-6°C) | 1.6" | 25.8 | 0.0 |
| March | 45°F (7°C) | 25°F (-4°C) | 35°F (2°C) | 1.8" | 23.8 | 0.0 |
| April | 59°F (15°C) | 36°F (2°C) | 48°F (9°C) | 4.0" | 9.8 | 0.0 |
| May | 70°F (21°C) | 47°F (8°C) | 59°F (15°C) | 4.8" | 1.8 | 0.5 |
| June | 80°F (27°C) | 58°F (14°C) | 69°F (21°C) | 5.8" | 0.0 | 2.8 |
| July | 83°F (28°C) | 62°F (17°C) | 72°F (22°C) | 5.2" | 0.0 | 4.8 |
| August | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 4.5" | 0.0 | 3.6 |
| September | 75°F (24°C) | 50°F (10°C) | 62°F (17°C) | 3.7" | 0.9 | 0.9 |
| October | 61°F (16°C) | 38°F (3°C) | 50°F (10°C) | 3.2" | 9.2 | 0.1 |
| November | 46°F (8°C) | 26°F (-3°C) | 36°F (2°C) | 2.3" | 21.3 | 0.0 |
| December | 33°F (1°C) | 16°F (-9°C) | 25°F (-4°C) | 1.8" | 28.9 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 1.5"
5.8 days with precipitation
February 1.6"
5.2 days with precipitation
March 1.8"
6.0 days with precipitation
April 4.0"
9.2 days with precipitation
May 4.8"
9.9 days with precipitation
June 5.8"
11.0 days with precipitation
July 5.2"
9.1 days with precipitation
August 4.5"
8.7 days with precipitation
September 3.7"
7.7 days with precipitation
October 3.2"
7.1 days with precipitation
November 2.3"
5.8 days with precipitation
December 1.8"
7.4 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
October 4
50% probability date
Last Spring Freeze
May 1
50% probability date
Growing Season
156 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,183
Higher = more heating needed
Cooling Degree Days
672
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Anamosa's climate means for you
Anamosa runs 47°F a year - peaking in July, coldest in January.
- Gardeners get about 156 frost-free days, with the last spring freeze near May 1 - plan the planting calendar around it, not the regional average.
- Energy bills track 7,183 heating and 672 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: Anamosa, IA
Anamosa, Iowa runs an annual average of 47°F, ranging from a mean daily high of 58°F to a mean daily low of 36°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from 2 weather stations, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Beyond temperature, Anamosa averages 40.1 inches of precipitation annually, predominantly as rainfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 156 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 4. Turning to energy use, 7,183 heating degree days and 672 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Anamosa 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 Anamosa, IA? ▼
The average annual temperature in Anamosa, Iowa is 47°F. The warmest month averages 83°F (28°C) and the coldest averages 9°F (-13°C).
How much rain does Anamosa get? ▼
Anamosa receives 40.1 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Anamosa? ▼
Anamosa 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 Anamosa? ▼
Anamosa has approximately 156 frost-free days per year, with the last spring freeze around May 1 and the first fall freeze around October 4.
How much energy does heating and cooling require in Anamosa? ▼
Anamosa has 7,183 heating degree days and 672 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 Anamosa climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Anamosa.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00130213. 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.