Boonville, Missouri climate: Normal weather by month, frost dates and records
Boonville's normal year runs from 20°F January nights to 88°F July afternoons, with 42.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.6°C, January lows of −7°C, July highs of 31°C, 1,081 mm of precipitation a year.
- NOAA stationBoonville
- Station IDUSC00230824
- Location38.96°N 92.74°W
- Elevation752 ft (229 m)
- Population7,863
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Boonville.
- Jan 38° 20°
- Feb 43° 23°
- Mar 55° 33°
- Apr 65° 43°
- May 75° 55°
- Jun 84° 64°
- Jul 88° 68°
- Aug 87° 66°
- Sep 80° 57°
- Oct 68° 46°
- Nov 54° 34°
- Dec 43° 25°
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 Boonville each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 20°F. The most precipitation falls in May (5.16 in), the least in December (2.00 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 38°F | 20°F | 28.8°F | 2.11 | – | <1 | 27 | 9 h 40 min |
| February | 43°F | 23°F | 32.8°F | 2.26 | – | <1 | 23 | 10 h 40 min |
| March | 55°F | 33°F | 44.0°F | 2.92 | – | <1 | 13 | 11 h 50 min |
| April | 65°F | 43°F | 53.9°F | 4.21 | – | <1 | 4 | 13 h 10 min |
| May | 75°F | 55°F | 64.8°F | 5.16 | – | 1 | <1 | 14 h 20 min |
| June | 84°F | 64°F | 73.9°F | 4.95 | – | 9 | <1 | 14 h 50 min |
| July | 88°F | 68°F | 78.0°F | 4.49 | – | 14 | <1 | 14 h 40 min |
| August | 87°F | 66°F | 76.6°F | 4.05 | – | 10 | <1 | 13 h 40 min |
| September | 80°F | 57°F | 68.2°F | 3.94 | – | 5 | <1 | 12 h 30 min |
| October | 68°F | 46°F | 56.7°F | 3.63 | – | <1 | 3 | 11 h 20 min |
| November | 54°F | 34°F | 43.8°F | 2.85 | – | <1 | 14 | 10 h 10 min |
| December | 43°F | 25°F | 34.1°F | 2.00 | – | <1 | 23 | 9 h 30 min |
| Year (annual) | 65°F | 45°F | 54.6°F | 42.57 | – | 39 | 107 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 3°C | −7°C | −1.8°C | 54 mm |
| February | 6°C | −5°C | 0.4°C | 57 mm |
| March | 13°C | 1°C | 6.7°C | 74 mm |
| April | 18°C | 6°C | 12.2°C | 107 mm |
| May | 24°C | 13°C | 18.2°C | 131 mm |
| June | 29°C | 18°C | 23.3°C | 126 mm |
| July | 31°C | 20°C | 25.6°C | 114 mm |
| August | 31°C | 19°C | 24.8°C | 103 mm |
| September | 26°C | 14°C | 20.1°C | 100 mm |
| October | 20°C | 8°C | 13.7°C | 92 mm |
| November | 12°C | 1°C | 6.6°C | 72 mm |
| December | 6°C | −4°C | 1.2°C | 51 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Boonville's own co-op station Boonville station does: 13 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USC00230824; 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 Boonville?
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 USC00230824.
When is the last frost in Boonville?
In Boonville, the last spring frost (32°F) comes after April 12 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 25 in half of years and before October 12 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 121 year in 10 after April 27; 9 in 10 after March 29
- First autumn frost, half of years before
- October 251 year in 10 before October 12; 9 in 10 before November 5
NOAA puts the median frost-free season at 195 days, and the season without a hard freeze (28°F) at 216 days.
A hard freeze (28°F) comes after April 1 in half of springs and before November 4 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Boonville in zone 6b in ZIP code 65233, the nearest ZIP area.
Frost dates for every NOAA station in Missouri · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00230824; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Boonville?
In a normal year in Boonville, 39 days a year reach 90°F (2 of them 100°F or more) and 107 nights fall to 32°F or colder.
- Days at 90°F or more
- 39a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 107a normal year
- Days that stay below freezing
- 27high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00230824.
How sunny is Boonville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Boonville, 4.2 kWh per square metre a day. July is the sunniest month (83%) and February the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 2.2 |
| February | 67% | 2.9 |
| March | 68% | 3.8 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 81% | 6.5 |
| July | 83% | 6.5 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.5 |
| November | 72% | 2.4 |
| December | 68% | 1.9 |
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 Boonville need?
A normal year in Boonville brings 5,095 heating degree days, 5% fewer than the median U.S. place (5,373), and 1,344 cooling degree days, 48% more than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,983 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,123 | 0 |
| February | 903 | 0 |
| March | 654 | 3 |
| April | 345 | 12 |
| May | 116 | 109 |
| June | 5 | 270 |
| July | 1 | 402 |
| August | 1 | 359 |
| September | 59 | 154 |
| October | 291 | 32 |
| November | 640 | 2 |
| December | 959 | 0 |
| Year (annual) | 5,095 | 1,344 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00230824. 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 Boonville been warmer than normal lately?
2025 averaged 56.3°F, 1.7°F above the 1991-2020 normal of 54.6°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 56.2°F | +1.6°F | 49.15 |
| 2023 | 60.7°F | +6.1°F | 27.43 |
| 2024 | 57.8°F | +3.2°F | 46.44 |
| 2025 | 56.3°F | +1.7°F | 34.21 |
Source: observed years: ACIS, station USC00230824. A year counts only with all twelve months complete.
How does Boonville's climate compare?
Boonville is warmer than 51 of the other 133 places with their own NOAA record in Missouri, and wetter than 51. Across the 7,247 U.S. stations with normals, its annual mean of 54.6°F is warmer than 59%.
In the Köppen classification computed from these normals, Boonville 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 Boonville share this climate record?
7 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.
- Pilot Grove, MO690 people · 11 mi SW
- Windsor Place, MO361 people · 3 mi SE
- Bunceton, MO338 people · 12 mi S
- Prairie Home, MO266 people · 13 mi SE
- Rocheport, MO215 people · 10 mi E
- Wooldridge, MO31 people · 12 mi E
- Huntsdale, MO30 people · 14 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Boonville's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Boonville. This page uses Boonville; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Boonville station USC00230817 | 1 mi NW | 744 ft | 55.7°F | 21°F | 89°F | 41.0 | 13 | April 5 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Boonville's climate
What is the coldest month in Boonville?
January, with a normal high of 38°F and a normal low of 20°F. The warmest is July (88°F by day, 68°F at night).
Does it snow in Boonville?
Yes. NOAA publishes no 1991-2020 snowfall normal for Boonville's NOAA station; Boonville's own co-op station Boonville station records 13 inches of snow in a normal year.
What is the rainiest month in Boonville?
May, with 5.16 in of precipitation in a normal year; the driest is December with 2.00 in.
What plant hardiness zone is Boonville in?
The USDA's 2023 map puts Boonville in zone 6b in ZIP code 65233, the nearest ZIP area.
How late can frost come in Boonville?
In half of years the last 32°F night comes after April 12; 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
- New Franklin, MO4 miles from this station, 54.0°F a year
- California, MO25 miles from this station, 54.9°F a year
- Marshall, MO29 miles from this station, 54.0°F a year
- Columbia, MO30 miles from this station, 56.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made