Guttenberg, Iowa climate: Normal weather by month, frost dates and records
Guttenberg's normal year runs from 10°F January nights to 84°F July afternoons, with 37.3 inches of precipitation and 34 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 9.2°C, January lows of −12°C, July highs of 29°C, 947 mm of precipitation a year.
- NOAA stationGuttenberg Lock and Dam 10
- Station IDUSC00133517
- Location42.79°N 91.10°W
- Elevation618 ft (188 m)
- Population1,804
On October 14, the normal high in Guttenberg is 63°F and the normal low 42°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Guttenberg.
- Jan 28° 10°
- Feb 33° 14°
- Mar 45° 27°
- Apr 59° 39°
- May 71° 50°
- Jun 80° 60°
- Jul 84° 64°
- Aug 82° 62°
- Sep 75° 54°
- Oct 61° 42°
- Nov 46° 29°
- Dec 33° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Guttenberg each month?
July is the warmest month, with normal highs of 84°F; January the coldest, with normal lows of 10°F. The most precipitation falls in June (5.70 in), the least in February (1.23 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 28°F | 10°F | 19.1°F | 1.33 | 10.0 | 9 | <1 | 30 | 9 h 20 min |
| February | 33°F | 14°F | 23.4°F | 1.23 | 9.3 | 8 | <1 | 26 | 10 h 30 min |
| March | 45°F | 27°F | 36.0°F | 1.98 | 3.7 | 9 | <1 | 21 | 11 h 50 min |
| April | 59°F | 39°F | 49.0°F | 3.65 | 0.7 | 11 | <1 | 6 | 13 h 20 min |
| May | 71°F | 50°F | 60.5°F | 4.58 | 0.0 | 12 | 1 | <1 | 14 h 40 min |
| June | 80°F | 60°F | 70.3°F | 5.70 | 0.0 | 11 | 3 | <1 | 15 h 20 min |
| July | 84°F | 64°F | 73.9°F | 4.85 | 0.0 | 9 | 5 | <1 | 15 h |
| August | 82°F | 62°F | 71.7°F | 3.61 | 0.0 | 9 | 3 | <1 | 14 h |
| September | 75°F | 54°F | 64.2°F | 3.75 | 0.0 | 9 | 1 | <1 | 12 h 30 min |
| October | 61°F | 42°F | 51.5°F | 2.81 | 0.3 | 9 | <1 | 4 | 11 h 10 min |
| November | 46°F | 29°F | 37.5°F | 2.13 | 1.2 | 8 | <1 | 18 | 9 h 50 min |
| December | 33°F | 18°F | 25.3°F | 1.66 | 9.2 | 9 | <1 | 28 | 9 h |
| Year (annual) | 58°F | 39°F | 48.5°F | 37.28 | 34.4 | 112 | 13 | 133 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −2°C | −12°C | −7.2°C | 34 mm | 25 cm |
| February | 0°C | −10°C | −4.8°C | 31 mm | 24 cm |
| March | 7°C | −3°C | 2.2°C | 50 mm | 9 cm |
| April | 15°C | 4°C | 9.4°C | 93 mm | 2 cm |
| May | 22°C | 10°C | 15.8°C | 116 mm | 0 cm |
| June | 27°C | 16°C | 21.3°C | 145 mm | 0 cm |
| July | 29°C | 18°C | 23.3°C | 123 mm | 0 cm |
| August | 28°C | 17°C | 22.1°C | 92 mm | 0 cm |
| September | 24°C | 12°C | 17.9°C | 95 mm | 0 cm |
| October | 16°C | 5°C | 10.8°C | 71 mm | 1 cm |
| November | 8°C | −2°C | 3.1°C | 54 mm | 3 cm |
| December | 1°C | −8°C | −3.7°C | 42 mm | 23 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00133517; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Guttenberg?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, August has the fewest days with rain (9).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00133517.
When is the last frost in Guttenberg?
In Guttenberg, the last spring frost (32°F) comes after April 21 in half of years and after May 6 in one year in ten; the first autumn frost comes before October 18 in half of years and before October 4 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 211 year in 10 after May 6; 9 in 10 after April 7
- First autumn frost, half of years before
- October 181 year in 10 before October 4; 9 in 10 before October 30
NOAA puts the median frost-free season at 178 days, and the season without a hard freeze (28°F) at 199 days.
A hard freeze (28°F) comes after April 9 in half of springs and before October 27 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Guttenberg in zone 5a in ZIP code 52052, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Guttenberg's NOAA station is in zone 5a: the coldest night of a typical year reaches −18°F (29 complete years).
Frost dates for every NOAA station in Iowa · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00133517; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Guttenberg?
In a normal year in Guttenberg, 13 days a year reach 90°F, 133 nights fall to 32°F or colder and 112 days bring measurable precipitation.
- Days at 90°F or more
- 13a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 133a normal year
- Days that stay below freezing
- 54high of 32°F or less
- Days with 0.01 inch of precipitation
- 112a normal year
- Days with 1 inch of snow or more
- 12a normal year
The highest temperature in this station's record (since 1937) is 103°F, on July 25, 2012; the lowest is −38°F, on February 3, 1996.
The wettest calendar year on that record is 2018, with 56.39 in; the snowiest season is 1950–51, with 69.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00133517; records: ACIS (NOAA Regional Climate Centers), station USC00133517. Records use complete months only; a month missing more than three days is left out.
How sunny is Guttenberg?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Guttenberg, 4.0 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (63%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 1.8 |
| February | 72% | 2.9 |
| March | 70% | 3.8 |
| April | 68% | 4.7 |
| May | 71% | 5.6 |
| June | 75% | 6.2 |
| July | 80% | 6.3 |
| August | 80% | 5.5 |
| September | 79% | 4.4 |
| October | 70% | 2.9 |
| November | 69% | 2.0 |
| December | 63% | 1.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Guttenberg need?
A normal year in Guttenberg brings 6,796 heating degree days, 26% more than the median U.S. place (5,373), and 832 cooling degree days, 8% fewer than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,064 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,423 | 0 |
| February | 1,165 | 0 |
| March | 902 | 1 |
| April | 485 | 5 |
| May | 191 | 51 |
| June | 25 | 183 |
| July | 3 | 281 |
| August | 9 | 217 |
| September | 110 | 85 |
| October | 430 | 10 |
| November | 824 | 0 |
| December | 1,231 | 0 |
| Year (annual) | 6,796 | 832 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00133517. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Guttenberg been warmer than normal lately?
2025 averaged 49.3°F, 0.8°F above the 1991-2020 normal of 48.5°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 49.7°F | +1.2°F | 27.37 | 39.8 |
| 2022 | 46.8°F | −1.7°F | 30.14 | 25.0 |
| 2023 | 50.7°F | +2.2°F | 23.92 | 26.4 |
| 2024 | 51.5°F | +3.0°F | 40.20 | 22.9 |
| 2025 | 49.3°F | +0.8°F | 35.40 | 25.6 |
Over 60 complete years from 1940 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00133517; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Guttenberg's climate compare?
Guttenberg is warmer than 76 of the other 131 places with their own NOAA record in Iowa, and wetter than 77. Across the 7,247 U.S. stations with normals, its annual mean of 48.5°F is warmer than 34%.
In the Köppen classification computed from these normals, Guttenberg is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Guttenberg share this climate record?
9 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Cassville, WI763 people · 7 mi SE
- Bloomington, WI752 people · 11 mi NE
- Colesburg, IA379 people · 11 mi SW
- Bagley, WI353 people · 8 mi N
- Mount Hope, WI210 people · 17 mi NE
- Patch Grove, WI196 people · 12 mi NE
- Garber, IA76 people · 9 mi W
- Glen Haven, WI64 people · 4 mi NE
- Osterdock, IA45 people · 5 mi SW
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Guttenberg's climate
What is the coldest month in Guttenberg?
January, with a normal high of 28°F and a normal low of 10°F. The warmest is July (84°F by day, 64°F at night).
Does it snow in Guttenberg?
Yes: 34 inches in a normal year, falling on 18 days with 0.1 inch or more, the most in January (10.0 inches).
What is the rainiest month in Guttenberg?
June, with 5.70 in of precipitation in a normal year; the driest is February with 1.23 in.
What plant hardiness zone is Guttenberg in?
The USDA's 2023 map puts Guttenberg in zone 5a in ZIP code 52052, the nearest ZIP area. By the same method at Guttenberg's NOAA station, the coldest night of a typical year reaches −18°F (29 years, 1991-2020): zone 5a.
How late can frost come in Guttenberg?
In half of years the last 32°F night comes after April 21; in one year in ten it comes after May 6. Waiting until May 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Iowa climateThe statewide normals and every place in the state
- Lancaster, WI16 miles from this station, 46.3°F a year
- Elkader, IA18 miles from this station, 45.9°F a year
- Prairie du Chien, WI19 miles from this station, 47.7°F a year
- Steuben, WI27 miles from this station, 46.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made