Photo: Paul Sableman · CC BY 2.0Weather without surprises: Rocheport keeps close to the norm for U.S. towns
January mornings start at about 21°. The year swings widely: the coldest month’s nights and the warmest month’s afternoons are 68° apart. By July afternoons alone, it runs hotter than 69% of U.S. towns. Radiators earn their keep from November to March, the months that average under 50°.
A year in Rocheport at a glance
Each month’s typical high and low, and what it brings.
What stands out about Rocheport’s climate
Compared with towns across the U.S., with Rocheport’s place in Missouri beside it.
What a year in Rocheport feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 191 frost-free days a year
In half of years the last 32° night comes by April 13 and the first by October 22. Frost and day counts come from NOAA’s station at New Franklin 1w, MO, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Rocheport’s center in zone 6b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −3°. 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 13 inches of snow a winter
Snow, measured at Boonville, MO, falls mostly in January. Precipitation (rain plus melted snow) adds up to 41 inches a year; May is the wettest month and January the driest. Rain or snow falls on about 109 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Rocheport
81% 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 New Franklin 1w, MO.
Living with Rocheport’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
191 frost-free days in zone 6b. The last frost comes by Apr 13 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 22.
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 Rocheport from natural hazards, river flooding is the largest share (61%); heat waves, cold waves, winter storms and ice storms together are 16%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Rocheport and similar climates
TownRatings has no climate map of the towns around Rocheport yet.
Climates most like Rocheport’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 |
|---|---|---|---|---|
| Rocheport, MO | 21° | 88° | 41" | 13" |
| Greenville, IL | 22° | 87° | 43" | 12" |
| Terre Haute, IN | 21° | 87° | 43" | 15" |
| Chanute, KS | 23° | 90° | 42" | 9.7" |
| Hamilton, OH | 22° | 87° | 43" | 9.7" |
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 Rocheport averaged 0.9° warmer than the 1900s. The biggest change is in December (+2.1°).
A smaller shift than in 86% 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 Rocheport compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Rocheport’s place among Missouri’s.
Rocheport weather by month
Highs, lows and precipitation from NOAA’s grid at Rocheport’s center; snow, wet days and snow on the ground from Boonville, MO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | 30-yr range |
|---|---|---|---|---|---|---|
| January | 39° | 21° | 1.8" | 6.2" | 8 | 24° – 40° |
| February | 44° | 25° | 2.0" | 2.7" | 7 | 24° – 45° |
| March | 56° | 34° | 2.9" | 1.1" | 9 | 38° – 59° |
| April | 67° | 44° | 4.6" | 0.0" | 11 | 49° – 61° |
| May | 76° | 54° | 4.9" | 0.0" | 13 | 60° – 74° |
| June | 84° | 64° | 4.6" | 0.0" | 10 | 70° – 78° |
| July | 88° | 68° | 4.5" | 0.0" | 9 | 74° – 85° |
| August | 87° | 65° | 3.7" | 0.0" | 8 | 70° – 82° |
| September | 80° | 57° | 3.9" | 0.0" | 8 | 63° – 75° |
| October | 68° | 45° | 3.5" | 0.0" | 9 | 51° – 62° |
| November | 55° | 34° | 2.7" | 0.5" | 9 | 37° – 53° |
| December | 43° | 25° | 2.0" | 2.8" | 7 | 20° – 42° |
| Year | 66° | 45° | 41.2" | 13.3" | 109 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 20° to 42°. June is the most reliable, staying within 9°.
Where Rocheport’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 Rocheport’s center.
- Snow: Boonville, MO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: New Franklin 1w, MO, 11 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 Rocheport’s climate
What is the weather like in Rocheport?
A typical July afternoon reaches 88°, a January night drops to 21°, and about 13 inches of snow falls in a normal winter. Colder January nights than 55% of U.S. towns; hotter July afternoons than 69% of U.S. towns.
How cold does it get in Rocheport in winter?
January nights average 21°. About 113 nights a year reach 32° or below and 4 reach 0° or below. In the coldest January of the last 30 years the month averaged 24°.
How much snow does Rocheport get?
About 13 inches in a normal winter at Boonville, MO, most of it in January.
How hot does it get in Rocheport?
July, with a typical high of 88° and a low of 68°. About 31 days a year reach 90° and 2 reach 100° (New Franklin 1w, MO).
When is the first and last frost in Rocheport?
In half of years the last spring frost (32°) comes by April 13 and the first fall frost by October 22, about 191 frost-free days, at New Franklin 1w, MO.
What growing zone is Rocheport in?
Zone 6b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −3°.
What is the best time of year to visit Rocheport?
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 Rocheport getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 86% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Rocheport.
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.