Summersville, Missouri climate: Normal weather by month, frost dates and records
Summersville's normal year runs from 23°F January nights to 88°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.3°C, January lows of −5°C, July highs of 31°C.
- NOAA stationSummersville (3 mi SE)
- Station IDUSC00238184
- Location37.14°N 91.63°W
- Elevation1,236 ft (377 m)
- From the center3 miles
- Population470
On October 23, the normal high in Summersville is 67°F and the normal low 43°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Summersville.
- Jan 43° 23°
- Feb 48° 27°
- Mar 57° 35°
- Apr 68° 45°
- May 76° 55°
- Jun 83° 63°
- Jul 88° 67°
- Aug 87° 65°
- Sep 80° 57°
- Oct 69° 46°
- Nov 57° 35°
- Dec 46° 27°
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 Summersville each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 23°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 43°F | 23°F | 33.1°F | – | <1 | 26 | 9 h 50 min |
| February | 48°F | 27°F | 37.3°F | – | <1 | 21 | 10 h 50 min |
| March | 57°F | 35°F | 46.0°F | – | <1 | 14 | 11 h 50 min |
| April | 68°F | 45°F | 56.2°F | – | <1 | 4 | 13 h 10 min |
| May | 76°F | 55°F | 65.1°F | – | <1 | <1 | 14 h 10 min |
| June | 83°F | 63°F | 73.1°F | – | 3 | <1 | 14 h 40 min |
| July | 88°F | 67°F | 77.5°F | – | 12 | <1 | 14 h 30 min |
| August | 87°F | 65°F | 76.1°F | – | 11 | <1 | 13 h 40 min |
| September | 80°F | 57°F | 68.2°F | – | 3 | <1 | 12 h 30 min |
| October | 69°F | 46°F | 57.4°F | – | <1 | 3 | 11 h 20 min |
| November | 57°F | 35°F | 46.0°F | – | <1 | 13 | 10 h 10 min |
| December | 46°F | 27°F | 36.5°F | – | <1 | 23 | 9 h 40 min |
| Year (annual) | 67°F | 45°F | 56.0°F | – | 29 | 103 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 6°C | −5°C | 0.6°C |
| February | 9°C | −3°C | 2.9°C |
| March | 14°C | 2°C | 7.8°C |
| April | 20°C | 7°C | 13.4°C |
| May | 24°C | 13°C | 18.4°C |
| June | 28°C | 17°C | 22.8°C |
| July | 31°C | 19°C | 25.3°C |
| August | 30°C | 19°C | 24.5°C |
| September | 27°C | 14°C | 20.1°C |
| October | 21°C | 8°C | 14.1°C |
| November | 14°C | 2°C | 7.8°C |
| December | 8°C | −3°C | 2.5°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Round Spring (2 mi SW) (14 miles away), gets 6 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238184; 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 Summersville?
Normal highs sit between 65°F and 85°F in April, May, June, September and October.
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 USC00238184.
When is the last frost in Summersville?
In Summersville, the last spring frost (32°F) comes after April 7 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 27 in half of years and before October 13 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 71 year in 10 after April 27; 9 in 10 after March 22
- First autumn frost, half of years before
- October 271 year in 10 before October 13; 9 in 10 before November 10
NOAA puts the median frost-free season at 201 days, and the season without a hard freeze (28°F) at 224 days.
A hard freeze (28°F) comes after March 28 in half of springs and before November 6 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Summersville in zone 7a in ZIP code 65571, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Summersville's NOAA station is in zone 7a: the coldest night of a typical year reaches 0°F (19 complete years).
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00238184; 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 Summersville?
In a normal year in Summersville, 29 days a year reach 90°F (1 of them 100°F or more) and 103 nights fall to 32°F or colder.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 103a normal year
- Days that stay below freezing
- 15high of 32°F or less
The highest temperature in this station's record (since 1963) is 107°F, on July 19, 1980; the lowest is −19°F, on January 20, 1985.
The wettest calendar year on that record is 1973, with 65.12 in; the snowiest season is 1979–80, with 27.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00238184; records: ACIS (NOAA Regional Climate Centers), station USC00238184. Records use complete months only; a month missing more than three days is left out.
How sunny is Summersville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Summersville, 4.3 kWh per square metre a day. July is the sunniest month (82%) and February the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 69% | 2.3 |
| February | 67% | 3.0 |
| March | 68% | 4.0 |
| April | 72% | 5.1 |
| May | 73% | 5.7 |
| June | 81% | 6.6 |
| July | 82% | 6.4 |
| August | 80% | 5.6 |
| September | 81% | 4.8 |
| October | 76% | 3.6 |
| November | 73% | 2.5 |
| December | 67% | 2.0 |
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 Summersville need?
A normal year in Summersville brings 4,512 heating degree days, 16% fewer than the median U.S. place (5,373), and 1,279 cooling degree days, 41% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,043 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 989 | 0 |
| February | 776 | 0 |
| March | 592 | 3 |
| April | 285 | 21 |
| May | 92 | 93 |
| June | 8 | 250 |
| July | 1 | 388 |
| August | 3 | 345 |
| September | 52 | 148 |
| October | 263 | 29 |
| November | 570 | 2 |
| December | 882 | 0 |
| Year (annual) | 4,512 | 1,279 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238184. 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 Summersville been warmer than normal lately?
2025 averaged 57.4°F, 1.4°F above the 1991-2020 normal of 56.0°F. 3 of the 4 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal |
|---|---|---|
| 2022 | 55.6°F | −0.4°F |
| 2023 | 58.0°F | +2.0°F |
| 2024 | 58.1°F | +2.1°F |
| 2025 | 57.4°F | +1.4°F |
Over 34 complete years from 1965 to 2025, the station's annual mean temperature rose at a fitted 6.1°F per century (+0.34°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00238184; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Summersville's climate compare?
Summersville is warmer than 89 of the other 133 places with their own NOAA record in Missouri. Across the 7,247 U.S. stations with normals, its annual mean of 56.0°F is warmer than 64%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Summersville share this climate record?
Mountain View has no NOAA station with 1991-2020 normals of its 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.
- Mountain View, MO2,668 people · 11 mi S
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 Summersville's climate
What is the coldest month in Summersville?
January, with a normal high of 43°F and a normal low of 23°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Summersville?
Yes. NOAA publishes no 1991-2020 snowfall normal for Summersville's NOAA station; the nearest record that keeps one, Round Spring (2 mi SW) (14 miles away), records 6 inches of snow in a normal year.
What plant hardiness zone is Summersville in?
The USDA's 2023 map puts Summersville in zone 7a in ZIP code 65571, the nearest ZIP area. By the same method at Summersville's NOAA station, the coldest night of a typical year reaches 0°F (19 years, 1991-2020): zone 7a.
How late can frost come in Summersville?
In half of years the last 32°F night comes after April 7; in one year in ten it comes after April 27. Waiting until April 27 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Round Spring (2 mi SW), MO14 miles from this station, 55.3°F a year
- Eminence, MO15 miles from this station, 56.6°F a year
- Winona, MO17 miles from this station, 54.0°F a year
- Houston, MO22 miles from this station, 55.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made