Liberty Hall · Photo: Jim Roberts · CC BY-SA 4.0Midwinter lows in Lamoni sink below those of 85% of U.S. towns
The warmest part of a July day comes in at 86° on average. The seasons are far apart: from a winter night to a summer afternoon the average spans 71°. It is a dry place: less rain and snow fall here than on 67% of U.S. towns. Homes need heating from November to March, the months averaging under 50°.
A year in Lamoni at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lamoni’s climate
Compared with towns across the U.S., with Lamoni’s place in Iowa beside it.
What a year in Lamoni feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 184 frost-free days a year
In half of years the last 32° night comes by April 17 and the first by October 21. Frost and day counts come from NOAA’s station at Lamoni, IA, 0.3 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lamoni’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −11°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 27 inches of snow a winter
Snow, measured at Lamoni, IA, falls mostly in January. Precipitation (rain plus melted snow) adds up to 38 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 110 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lamoni
84% of the work is heating. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Lamoni, IA.
Living with Lamoni’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
184 frost-free days in zone 5b. The last frost comes by Apr 17 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 21.
Months with highs of 62–84° and lows of 40° or more: April, May, June, August, September and October. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Lamoni from natural hazards, drought is the largest share (25%); heat waves, cold waves, winter storms and ice storms together are 25%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lamoni and similar climates
TownRatings has no climate map of the towns around Lamoni yet.
Climates most like Lamoni’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Lamoni, IA | 15° | 86° | 38" | 27" |
| Peoria, IL | 17° | 85° | 38" | 26" |
| Schererville, IN | 17° | 84° | 39" | 27" |
| Defiance, OH | 19° | 85° | 37" | 24" |
| Claverack, NY | 16° | 84° | 42" | 31" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Lamoni averaged 0.8° warmer than the 1900s. The biggest change is in December (+2.4°).
A smaller shift than in 89% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Lamoni compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lamoni’s place among Iowa’s.
Lamoni weather by month
Highs, lows and precipitation from NOAA’s grid at Lamoni’s center; snow, wet days and snow on the ground from Lamoni, IA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 33° | 15° | 1.0" | 7.3" | 7 | 16 | 17° – 35° |
| February | 38° | 19° | 1.4" | 6.3" | 7 | 13 | 19° – 40° |
| March | 51° | 30° | 2.3" | 4.7" | 9 | 5 | 33° – 55° |
| April | 62° | 40° | 4.0" | 1.3" | 12 | 0 | 44° – 57° |
| May | 72° | 51° | 5.3" | 0.0" | 14 | 0 | 56° – 71° |
| June | 82° | 61° | 5.1" | 0.0" | 12 | 0 | 68° – 75° |
| July | 86° | 65° | 4.6" | 0.0" | 10 | 0 | 70° – 82° |
| August | 84° | 63° | 4.1" | 0.0" | 10 | 0 | 67° – 78° |
| September | 77° | 54° | 3.7" | 0.0" | 8 | 0 | 59° – 72° |
| October | 65° | 42° | 3.0" | 0.3" | 9 | 0 | 47° – 59° |
| November | 50° | 30° | 2.1" | 1.9" | 7 | 2 | 31° – 50° |
| December | 38° | 20° | 1.5" | 4.9" | 6 | 9 | 14° – 36° |
| Year | 61° | 41° | 38.1" | 26.7" | 110 | 45 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 14° to 36°. June is the most reliable, staying within 8°.
Where Lamoni’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Lamoni’s center.
- Snow: Lamoni, IA (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Lamoni, IA, 0.3 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Lamoni’s climate
What is the weather like in Lamoni?
A typical July afternoon reaches 86°, a January night drops to 15°, and about 27 inches of snow falls in a normal winter. Colder January nights than 85% of U.S. towns; hotter July afternoons than 52% of U.S. towns.
How cold does it get in Lamoni in winter?
January nights average 15°. About 132 nights a year reach 32° or below and 11 reach 0° or below. In the coldest January of the last 30 years the month averaged 17°.
How much snow does Lamoni get?
About 27 inches in a normal winter at Lamoni, IA, most of it in January, with snow on the ground about 45 days a year.
How hot does it get in Lamoni?
July, with a typical high of 86° and a low of 65°. About 27 days a year reach 90° and 1 reach 100° (Lamoni, IA).
When is the first and last frost in Lamoni?
In half of years the last spring frost (32°) comes by April 17 and the first fall frost by October 21, about 184 frost-free days, at Lamoni, IA.
What growing zone is Lamoni in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −11°.
What is the best time of year to visit Lamoni?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, June, August, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lamoni getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 89% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lamoni.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.