Audubon, IA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Audubon's primary NOAA station, AUDUBON.
The climate verdict for Audubon
Audubon, Iowa has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 47°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 47°F
- yearly average temperature, NOAA normal
- 64/100
- comfort score, above 49% of station-mapped location scores
- 35.0"
- precipitation, annual total
- 154 days
- frost-free growing season
Audubon: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00130385 · Audubon, IA 47°F mean · 35.0" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-MID · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 47°F
- RANK-COOL #1,852
- PHOTO-FINISH ≈ Fond Du Lac
- PRCP-MID 35.0"
- SWING-WIDE 54°F
- COMF-MID 64/100
- LOAD-HEAT 7,171 HDD
- STN-1 USC00130385
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Fond Du Lac, WI (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every IA station list.
- Audubon (this station) 47°F
- Cold Hereford, SD 47°F
- Hot Lodi, WI 47°F
- Near Fond Du Lac, WI 47°F
- Near Steuben, WI 47°F
Climate Living Index · Audubon
Audubon: 45/100 · grade D
Audubon publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Audubon, not an official NOAA rating. Rankings still use Comfort Score 64/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 35.0 in · 0.0 from 35 in | 96/100 · A |
| Normal heat + freeze calendar | 162 calendar days | 38/100 · F |
| Frost-free season | 154 days/year | 28/100 · F |
| Annual temperature balance | 47.0°F · 20.5° from 67.5°F | 27/100 · F |
Audubon · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Audubon is a continental Köppen climate: Dfa
Coldest-month mean 18.4°F and warmest-month mean 72.1°F place this station in continental, no dry season, hot summer climates (Dfa). Class Dfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, hot summer.
- Köppen code
- Dfa
- Group
- Continental
- Warmest month
- 72.1°F
- Coldest month
- 18.4°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Audubon sits across the climate record
Three NOAA fields for Audubon's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 73%
- Among 6,861 stations, Audubon sits in the cooler third of annual means.
- Annual precipitation
- 48th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 90%
- Warmest-to-coldest month gap for Audubon is large versus 6,861 complete station-years.
How Audubon compares across U.S. station-mapped locations
Audubon's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Audubon's measured station temperature trend
MethodologyAcross 94 complete annual observations from 1895 to 2024, AUDUBON warmed at a fitted rate of 0.09°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Audubon primary station fitted change +0.09 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 28°F (-2°C) | 9°F (-13°C) | 18°F (-8°C) | 0.9" | 30.6 | 0.0 |
| February | 33°F (0°C) | 13°F (-11°C) | 23°F (-5°C) | 1.1" | 26.8 | 0.0 |
| March | 46°F (8°C) | 24°F (-4°C) | 35°F (2°C) | 1.7" | 24.4 | 0.0 |
| April | 60°F (15°C) | 35°F (2°C) | 47°F (9°C) | 3.6" | 12.2 | 0.0 |
| May | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 5.2" | 1.3 | 0.6 |
| June | 80°F (26°C) | 58°F (15°C) | 69°F (21°C) | 5.1" | 0.0 | 2.4 |
| July | 83°F (28°C) | 62°F (16°C) | 72°F (22°C) | 3.8" | 0.0 | 4.7 |
| August | 81°F (27°C) | 59°F (15°C) | 70°F (21°C) | 4.5" | 0.0 | 2.8 |
| September | 75°F (24°C) | 50°F (10°C) | 62°F (17°C) | 3.5" | 1.2 | 0.9 |
| October | 62°F (17°C) | 37°F (3°C) | 50°F (10°C) | 2.8" | 11.0 | 0.0 |
| November | 46°F (8°C) | 25°F (-4°C) | 36°F (2°C) | 1.5" | 23.0 | 0.0 |
| December | 33°F (1°C) | 14°F (-10°C) | 24°F (-5°C) | 1.2" | 29.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 83°F around July 12, short of 90°F on every date, while 162 dates carry a normal low at or below freezing, the coldest 8°F near January 20.
The freezing stretch
The normal low stays at or below 32°F into April 7, then returns to freezing around October 29, covering 162 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is May 8, when 39% of years recorded at least a hundredth of an inch. The driest is January 28 at 17%. Summed across the calendar, that is about 94 wet dates a year.
The widest day
October 2 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Audubon.
Monthly Precipitation
Average monthly rainfall
5.2 days with precipitation
5.2 days with precipitation
6.7 days with precipitation
10.0 days with precipitation
12.1 days with precipitation
10.2 days with precipitation
9.2 days with precipitation
8.8 days with precipitation
7.6 days with precipitation
7.5 days with precipitation
5.2 days with precipitation
5.5 days with precipitation
Audubon runs a summer-peaked wet season
38% of Audubon's yearly precipitation falls in June, July and August alone, against the 25% an evenly spread year would give those three months. The wettest month is May at 5.2", on a wide 53.7°F gap between its warmest and coldest month. Warm-season convection and, across the Southwest, the North American monsoon produce this shape: rain arrives in short heavy bursts during the hottest part of the year rather than as long cool-season soaking.
- Wettest three months: May, June, August, taking 42% of the annual total between them.
- Driest month: January at 0.9".
- Winter share: 9% falls in December, January and February.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A summer-peaked label means the June-August share reaches 35%; it describes timing across an average year, not any single season, and says nothing about how heavy an individual storm can be.
When it rains in Audubon, it arrives in quantity
35.0" of precipitation falls across only about 93 wet days here, averaging 0.38 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 93 a year, 26% of all days
- Average depth per wet day
- 0.38 inches
- Most wet days
- May, about 12
- Fewest wet days
- January, about 5
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Frost Dates & Growing Season
First Fall Freeze
October 3
50% probability date
Last Spring Freeze
May 2
50% probability date
Growing Season
154 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,171
Higher = more heating needed
Cooling Degree Days
668
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside IA closest to Audubon on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (47°F here).
- Alma, MI 47°F · 0.0°F off
- Big Timber, MT 47°F · 0.0°F off
- Bly, OR 47°F · 0.0°F off
- Chazy, NY 47°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (35.0" here), excluding temperature-peer places.
- Dearborn, MI 35.0" · 0.0" off
- Benton Harbor, MI 35.0" · 0.0" off
- Cashton, WI 35.0" · 0.0" off
- Stillwater, MN 35.1" · 0.0" off
Data-derived climate profile
How Audubon's climate pattern fits together
heating led · moderate · mid swing
Audubon's energy balance leans toward cold weather: 7,171 annual heating degree days against 668 for cooling. Its 53.7°F seasonal range still makes the monthly rows more useful than the annual average alone.
Audubon's frost-free season lasts about 154 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Audubon's middle-range seasonal profile. The measured spread is 53.7°F. The annual average is 47°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Audubon's 35.0 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Audubon's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Audubon, not an official NOAA class or a year-ahead forecast.
Questions about Audubon's climate
How much rain does Audubon get? ▼
How cold does Audubon get in winter? ▼
How much energy does heating and cooling require in Audubon? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Audubon's primary station: AUDUBON (USC00130385). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 1903655). Match rule for Audubon: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Audubon comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.