Photo: Rowen Hansen · CC BY-SA 4.0Summers, winters and rain in Gunn City all run close to those of most U.S. towns
Nights in January average 21°. By July afternoons alone, it runs hotter than 71% of U.S. towns. Decade by decade the climate has edged up, 1.1° above 1901–2000. Garden planting can start around April 8; autumn frost returns near October 29.
A year in Gunn City at a glance
Each month’s typical high and low, and what it brings.
What stands out about Gunn City’s climate
Compared with towns across the U.S., with Gunn City’s place in Missouri beside it.
What a year in Gunn City feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 204 frost-free days a year
In half of years the last 32° night comes by April 8 and the first by October 29. Frost and day counts come from NOAA’s station at Pleasant Hill Wfo, MO, 11 miles from the town’s center, 140 ft higher.
The 2023 USDA map puts Gunn City’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −4°. 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 15 inches of snow a winter
Snow, measured at Kingsville, MO, falls mostly in February. Precipitation (rain plus melted snow) adds up to 42 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 71 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Gunn City
78% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Pleasant Hill Wfo, MO.
Living with Gunn City’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
204 frost-free days in zone 6b. The last frost comes by Apr 8 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 29.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October.
Parks & trails →Of the yearly building losses FEMA expects in Gunn City from natural hazards, river flooding is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 25%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Gunn City and similar climates
TownRatings has no climate map of the towns around Gunn City yet.
Climates most like Gunn City’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 |
|---|---|---|---|---|
| Gunn City, MO | 21° | 89° | 42" | 15" |
| East St. Louis, IL | 24° | 89° | 42" | 14" |
| Terre Haute, IN | 21° | 87° | 43" | 15" |
| Lake of the Woods, VA | 25° | 88° | 44" | 11" |
| Reading, OH | 23° | 87° | 44" | 16" |
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 Gunn City averaged 1.1° warmer than the 1900s. The biggest change is in March (+2.4°).
A smaller shift than in 73% 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 Gunn City compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Gunn City’s place among Missouri’s.
Gunn City weather by month
Highs, lows and precipitation from NOAA’s grid at Gunn City’s center; snow, wet days and snow on the ground from Kingsville, MO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 39° | 21° | 1.4" | 4.1" | 4 | 6 | 23° – 41° |
| February | 45° | 25° | 1.8" | 4.6" | 5 | 4 | 26° – 46° |
| March | 56° | 34° | 2.8" | 1.4" | 6 | 1 | 39° – 58° |
| April | 66° | 44° | 4.4" | 0.1" | 8 | 0 | 48° – 60° |
| May | 75° | 54° | 5.7" | 0.1" | 9 | 0 | 60° – 74° |
| June | 84° | 64° | 5.3" | 0.0" | 7 | 0 | 70° – 78° |
| July | 89° | 68° | 4.8" | 0.0" | 6 | 0 | 73° – 85° |
| August | 87° | 66° | 3.8" | 0.0" | 5 | 0 | 70° – 82° |
| September | 80° | 57° | 4.1" | 0.0" | 6 | 0 | 63° – 75° |
| October | 68° | 45° | 3.4" | 0.2" | 6 | 0 | 50° – 62° |
| November | 55° | 34° | 2.6" | 1.2" | 5 | 1 | 37° – 53° |
| December | 44° | 25° | 2.0" | 2.9" | 4 | 3 | 21° – 41° |
| Year | 66° | 45° | 42.0" | 14.6" | 71 | 16 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 21° to 41°. June is the most reliable, staying within 8°.
Where Gunn City’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 Gunn City’s center.
- Snow: Kingsville, MO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Pleasant Hill Wfo, MO, 11 miles from the town’s center, 140 ft higher; 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 Gunn City’s climate
What is the weather like in Gunn City?
A typical July afternoon reaches 89°, a January night drops to 21°, and about 15 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; hotter July afternoons than 71% of U.S. towns.
How cold does it get in Gunn City in winter?
January nights average 21°. About 106 nights a year reach 32° or below and 3 reach 0° or below. In the coldest January of the last 30 years the month averaged 23°.
How much snow does Gunn City get?
About 15 inches in a normal winter at Kingsville, MO, most of it in February, with snow on the ground about 16 days a year.
How hot does it get in Gunn City?
July, with a typical high of 89° and a low of 68°. About 37 days a year reach 90° and 3 reach 100° (Pleasant Hill Wfo, MO).
When is the first and last frost in Gunn City?
In half of years the last spring frost (32°) comes by April 8 and the first fall frost by October 29, about 204 frost-free days, at Pleasant Hill Wfo, MO.
What growing zone is Gunn City in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −4°.
What is the best time of year to visit Gunn City?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Gunn City getting warmer?
Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 73% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Gunn City.
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.