Steelville, Missouri climate: Normal weather by month, frost dates and records
Steelville's normal year runs from 19°F January nights to 88°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.9°C, January lows of −7°C, July highs of 31°C.
- NOAA stationSteelville (2 mi N)
- Station IDUSC00238043
- Location38.01°N 91.37°W
- Elevation700 ft (213 m)
- Population1,445
On October 23, the normal high in Steelville is 67°F and the normal low 36°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Steelville.
- Jan 42° 19°
- Feb 48° 21°
- Mar 57° 29°
- Apr 69° 39°
- May 77° 50°
- Jun 84° 58°
- Jul 88° 63°
- Aug 87° 60°
- Sep 79° 51°
- Oct 70° 39°
- Nov 56° 29°
- Dec 46° 22°
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 Steelville each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 19°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 42°F | 19°F | 30.2°F | – | <1 | 27 | 9 h 50 min |
| February | 48°F | 21°F | 34.5°F | – | <1 | 24 | 10 h 50 min |
| March | 57°F | 29°F | 43.3°F | – | <1 | 21 | 11 h 50 min |
| April | 69°F | 39°F | 53.9°F | – | <1 | 10 | 13 h 10 min |
| May | 77°F | 50°F | 63.2°F | – | 1 | 2 | 14 h 10 min |
| June | 84°F | 58°F | 71.2°F | – | 5 | <1 | 14 h 50 min |
| July | 88°F | 63°F | 75.4°F | – | 14 | <1 | 14 h 30 min |
| August | 87°F | 60°F | 73.3°F | – | 12 | <1 | 13 h 40 min |
| September | 79°F | 51°F | 65.3°F | – | 3 | 1 | 12 h 30 min |
| October | 70°F | 39°F | 54.2°F | – | <1 | 10 | 11 h 20 min |
| November | 56°F | 29°F | 42.7°F | – | <1 | 20 | 10 h 10 min |
| December | 46°F | 22°F | 33.9°F | – | <1 | 26 | 9 h 30 min |
| Year (annual) | 67°F | 40°F | 53.4°F | – | 36 | 141 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 5°C | −7°C | −1.0°C |
| February | 9°C | −6°C | 1.4°C |
| March | 14°C | −2°C | 6.3°C |
| April | 20°C | 4°C | 12.2°C |
| May | 25°C | 10°C | 17.3°C |
| June | 29°C | 15°C | 21.8°C |
| July | 31°C | 17°C | 24.1°C |
| August | 30°C | 16°C | 22.9°C |
| September | 26°C | 11°C | 18.5°C |
| October | 21°C | 4°C | 12.3°C |
| November | 14°C | −2°C | 5.9°C |
| December | 8°C | −5°C | 1.1°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Rolla (22 miles away), gets 17 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238043; 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 Steelville?
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 USC00238043.
When is the last frost in Steelville?
In Steelville, the last spring frost (32°F) comes after April 26 in half of years and after May 12 in one year in ten; the first autumn frost comes before October 8 in half of years and before September 25 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 261 year in 10 after May 12; 9 in 10 after April 9
- First autumn frost, half of years before
- October 81 year in 10 before September 25; 9 in 10 before October 23
NOAA puts the median frost-free season at 164 days, and the season without a hard freeze (28°F) at 184 days.
A hard freeze (28°F) comes after April 14 in half of springs and before October 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Steelville in zone 6a in ZIP code 65565, 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 USC00238043; 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 Steelville?
In a normal year in Steelville, 36 days a year reach 90°F (1 of them 100°F or more) and 141 nights fall to 32°F or colder.
- Days at 90°F or more
- 36a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 141a normal year
- Days that stay below freezing
- 19high of 32°F or less
The highest temperature in this station's record (since 1893) is 111°F, on July 31, 1980; the lowest is −31°F, on January 17, 1977.
The wettest calendar year on that record is 1993, with 66.08 in; the snowiest season is 1959–60, with 35.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00238043; records: ACIS (NOAA Regional Climate Centers), station USC00238043. Records use complete months only; a month missing more than three days is left out.
How sunny is Steelville?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Steelville, 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 Steelville need?
A normal year in Steelville brings 5,193 heating degree days, 3% fewer than the median U.S. place (5,373), and 1,008 cooling degree days, 11% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,539 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,077 | 0 |
| February | 854 | 0 |
| March | 675 | 2 |
| April | 353 | 19 |
| May | 133 | 75 |
| June | 21 | 207 |
| July | 2 | 324 |
| August | 8 | 266 |
| September | 91 | 101 |
| October | 347 | 12 |
| November | 669 | 1 |
| December | 964 | 0 |
| Year (annual) | 5,193 | 1,008 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00238043. 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 Steelville's climate compare?
Steelville is warmer than 29 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 53.4°F is warmer than 55%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Steelville share this climate record?
6 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.
- Cuba, MO3,230 people · 5 mi NW
- Bourbon, MO1,533 people · 12 mi NE
- Indian Lake, MO1,075 people · 8 mi NW
- Leasburg, MO318 people · 7 mi NE
- West Sullivan, MO281 people · 16 mi NE
- St. Cloud, MO41 people · 14 mi NE
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 Steelville's climate
What is the coldest month in Steelville?
January, with a normal high of 42°F and a normal low of 19°F. The warmest is July (88°F by day, 63°F at night).
Does it snow in Steelville?
Yes. NOAA publishes no 1991-2020 snowfall normal for Steelville's NOAA station; the nearest record that keeps one, Rolla (22 miles away), records 17 inches of snow in a normal year.
What plant hardiness zone is Steelville in?
The USDA's 2023 map puts Steelville in zone 6a in ZIP code 65565, the nearest ZIP area.
How late can frost come in Steelville?
In half of years the last 32°F night comes after April 26; in one year in ten it comes after May 12. Waiting until May 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Rolla, MO22 miles from this station, 56.3°F a year
- Vichy Rolla National Airport, MO24 miles from this station, 55.5°F a year
- Salem, MO27 miles from this station, 55.3°F a year
- Potosi, MO30 miles from this station, 54.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made