Vienna, Missouri climate: Normal weather by month, frost dates and records
Vienna's normal year runs from 24°F January nights to 91°F July afternoons, with 44.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.2°C, January lows of −4°C, July highs of 33°C, 1,141 mm of precipitation a year.
- NOAA stationVienna (2 mi WNW)
- Station IDUSC00238620
- Location38.20°N 91.98°W
- Elevation770 ft (235 m)
- From the center2 miles
- Population579
On October 23, the normal high in Vienna is 69°F and the normal low 44°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Vienna.
- Jan 44° 24°
- Feb 49° 28°
- Mar 59° 36°
- Apr 70° 46°
- May 78° 55°
- Jun 86° 65°
- Jul 91° 69°
- Aug 90° 66°
- Sep 82° 58°
- Oct 71° 46°
- Nov 58° 37°
- Dec 48° 28°
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 Vienna each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 24°F. The most precipitation falls in June (5.17 in), the least in February (2.24 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 44°F | 24°F | 33.9°F | 2.47 | 7 | <1 | 27 | 9 h 50 min |
| February | 49°F | 28°F | 38.5°F | 2.24 | 7 | <1 | 22 | 10 h 50 min |
| March | 59°F | 36°F | 47.5°F | 3.57 | 9 | <1 | 16 | 11 h 50 min |
| April | 70°F | 46°F | 57.8°F | 4.67 | 10 | <1 | 6 | 13 h 10 min |
| May | 78°F | 55°F | 66.8°F | 4.87 | 11 | <1 | 1 | 14 h 10 min |
| June | 86°F | 65°F | 75.3°F | 5.17 | 9 | 4 | <1 | 14 h 50 min |
| July | 91°F | 69°F | 79.6°F | 4.61 | 8 | 13 | <1 | 14 h 40 min |
| August | 90°F | 66°F | 78.1°F | 3.81 | 7 | 13 | <1 | 13 h 40 min |
| September | 82°F | 58°F | 69.8°F | 4.01 | 7 | 2 | <1 | 12 h 30 min |
| October | 71°F | 46°F | 58.6°F | 2.92 | 8 | <1 | 5 | 11 h 20 min |
| November | 58°F | 37°F | 47.4°F | 3.57 | 8 | <1 | 15 | 10 h 10 min |
| December | 48°F | 28°F | 37.7°F | 3.02 | 8 | <1 | 24 | 9 h 30 min |
| Year (annual) | 69°F | 46°F | 57.6°F | 44.93 | 99 | 33 | 115 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 6°C | −4°C | 1.1°C | 63 mm |
| February | 9°C | −2°C | 3.6°C | 57 mm |
| March | 15°C | 2°C | 8.6°C | 91 mm |
| April | 21°C | 8°C | 14.3°C | 119 mm |
| May | 26°C | 13°C | 19.3°C | 124 mm |
| June | 30°C | 18°C | 24.1°C | 131 mm |
| July | 33°C | 20°C | 26.4°C | 117 mm |
| August | 32°C | 19°C | 25.6°C | 97 mm |
| September | 28°C | 14°C | 21.0°C | 102 mm |
| October | 22°C | 8°C | 14.8°C | 74 mm |
| November | 15°C | 3°C | 8.6°C | 91 mm |
| December | 9°C | −2°C | 3.2°C | 77 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Iberia (19 miles away), gets 8 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238620; 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 Vienna?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (7).
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 USC00238620.
When is the last frost in Vienna?
In Vienna, the last spring frost (32°F) comes after April 8 in half of years and after April 27 in one year in ten; the first autumn frost comes before October 26 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 81 year in 10 after April 27; 9 in 10 after March 21
- First autumn frost, half of years before
- October 261 year in 10 before October 12; 9 in 10 before November 8
NOAA puts the median frost-free season at 200 days, and the season without a hard freeze (28°F) at 223 days.
A hard freeze (28°F) comes after March 28 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Vienna in zone 6b in ZIP code 65582, 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 USC00238620; 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 Vienna?
In a normal year in Vienna, 33 days a year reach 90°F (3 of them 100°F or more), 115 nights fall to 32°F or colder and 99 days bring measurable precipitation.
- Days at 90°F or more
- 33a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 115a normal year
- Days that stay below freezing
- 20high of 32°F or less
- Days with 0.01 inch of precipitation
- 99a normal year
The highest temperature in this station's record (since 1962) is 110°F, on July 31, 1980; the lowest is −27°F, on January 17, 1977.
The wettest calendar year on that record is 1993, with 63.06 in; the snowiest season is 1977–78, with 38.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00238620; records: ACIS (NOAA Regional Climate Centers), station USC00238620. Records use complete months only; a month missing more than three days is left out.
How sunny is Vienna?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Vienna, 4.2 kWh per square metre a day. July is the sunniest month (83%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 67% | 2.2 |
| February | 66% | 2.9 |
| March | 67% | 3.8 |
| April | 72% | 5.0 |
| May | 73% | 5.7 |
| June | 81% | 6.5 |
| July | 83% | 6.4 |
| August | 81% | 5.6 |
| September | 81% | 4.8 |
| October | 75% | 3.4 |
| November | 72% | 2.4 |
| December | 67% | 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 Vienna need?
A normal year in Vienna brings 4,272 heating degree days, 20% fewer than the median U.S. place (5,373), and 1,607 cooling degree days, 77% 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 4,507 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 964 | 1 |
| February | 743 | 1 |
| March | 558 | 14 |
| April | 258 | 43 |
| May | 78 | 134 |
| June | 9 | 317 |
| July | 0 | 454 |
| August | 1 | 409 |
| September | 43 | 189 |
| October | 238 | 39 |
| November | 535 | 5 |
| December | 845 | 0 |
| Year (annual) | 4,272 | 1,607 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238620. 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.
How does Vienna's climate compare?
Vienna is warmer than 119 of the other 133 places with their own NOAA record in Missouri, and wetter than 74. Across the 7,247 U.S. stations with normals, its annual mean of 57.6°F is warmer than 68%.
In the Köppen classification computed from these normals, Vienna is Cfa: temperate, 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 Vienna share this climate record?
3 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.
- Freeburg, MO411 people · 9 mi N
- Meta, MO179 people · 13 mi NW
- Argyle, MO144 people · 7 mi N
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 Vienna's climate
What is the coldest month in Vienna?
January, with a normal high of 44°F and a normal low of 24°F. The warmest is July (91°F by day, 69°F at night).
Does it snow in Vienna?
Yes. NOAA publishes no 1991-2020 snowfall normal for Vienna's NOAA station; the nearest record that keeps one, Iberia (19 miles away), records 8 inches of snow in a normal year.
What is the rainiest month in Vienna?
June, with 5.17 in of precipitation in a normal year; the driest is February with 2.24 in.
What plant hardiness zone is Vienna in?
The USDA's 2023 map puts Vienna in zone 6b in ZIP code 65582, the nearest ZIP area.
How late can frost come in Vienna?
In half of years the last 32°F night comes after April 8; 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
- Vichy Rolla National Airport, MO12 miles from this station, 55.5°F a year
- Iberia, MO19 miles from this station, 55.5°F a year
- Rolla, MO21 miles from this station, 56.3°F a year
- Freedom, MO23 miles from this station, 54.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made