Monroe City, Missouri climate: Normal weather by month, frost dates and records
Monroe City's normal year runs from 18°F January nights to 86°F July afternoons, with 41.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.6°C, January lows of −8°C, July highs of 30°C, 1,059 mm of precipitation a year.
- NOAA stationMonroe City
- Station IDUSC00235708
- Location39.63°N 91.72°W
- Elevation741 ft (226 m)
- From the center1 miles
- Population2,706
On October 23, the normal high in Monroe City is 63°F and the normal low 41°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Monroe City.
- Jan 36° 18°
- Feb 40° 21°
- Mar 52° 32°
- Apr 64° 42°
- May 73° 54°
- Jun 83° 63°
- Jul 86° 66°
- Aug 85° 64°
- Sep 79° 55°
- Oct 67° 44°
- Nov 53° 32°
- Dec 41° 23°
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 Monroe City each month?
July is the warmest month, with normal highs of 86°F; January the coldest, with normal lows of 18°F. The most precipitation falls in June (5.36 in), the least in January (1.82 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 18°F | 26.8°F | 1.82 | – | <1 | 28 | 9 h 40 min |
| February | 40°F | 21°F | 30.6°F | 2.01 | – | <1 | 25 | 10 h 40 min |
| March | 52°F | 32°F | 41.8°F | 2.92 | – | <1 | 17 | 11 h 50 min |
| April | 64°F | 42°F | 52.9°F | 4.28 | – | <1 | 5 | 13 h 10 min |
| May | 73°F | 54°F | 63.4°F | 5.04 | – | 1 | <1 | 14 h 20 min |
| June | 83°F | 63°F | 72.7°F | 5.36 | – | 6 | <1 | 15 h |
| July | 86°F | 66°F | 76.2°F | 4.58 | – | 12 | <1 | 14 h 40 min |
| August | 85°F | 64°F | 74.3°F | 3.77 | – | 6 | <1 | 13 h 50 min |
| September | 79°F | 55°F | 66.9°F | 3.92 | – | 5 | <1 | 12 h 30 min |
| October | 67°F | 44°F | 55.4°F | 3.30 | – | <1 | 5 | 11 h 10 min |
| November | 53°F | 32°F | 42.5°F | 2.65 | – | <1 | 17 | 10 h |
| December | 41°F | 23°F | 32.0°F | 2.04 | – | <1 | 24 | 9 h 20 min |
| Year (annual) | 63°F | 43°F | 52.9°F | 41.69 | – | 30 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −8°C | −2.9°C | 46 mm |
| February | 4°C | −6°C | −0.8°C | 51 mm |
| March | 11°C | 0°C | 5.4°C | 74 mm |
| April | 18°C | 5°C | 11.6°C | 109 mm |
| May | 23°C | 12°C | 17.4°C | 128 mm |
| June | 28°C | 17°C | 22.6°C | 136 mm |
| July | 30°C | 19°C | 24.6°C | 116 mm |
| August | 29°C | 18°C | 23.5°C | 96 mm |
| September | 26°C | 13°C | 19.4°C | 100 mm |
| October | 19°C | 7°C | 13.0°C | 84 mm |
| November | 12°C | 0°C | 5.8°C | 67 mm |
| December | 5°C | −5°C | 0.0°C | 52 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Shelbina (18 miles away), gets 16 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00235708; 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 Monroe City?
Normal highs sit between 65°F and 85°F in May, June, August, 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 USC00235708.
When is the last frost in Monroe City?
In Monroe City, the last spring frost (32°F) comes after April 12 in half of years and after April 28 in one year in ten; the first autumn frost comes before October 22 in half of years and before October 7 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 28; 9 in 10 after March 31
- First autumn frost, half of years before
- October 221 year in 10 before October 7; 9 in 10 before November 3
NOAA puts the median frost-free season at 190 days, and the season without a hard freeze (28°F) at 212 days.
A hard freeze (28°F) comes after April 2 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Monroe City in zone 6a in ZIP code 63456, 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 USC00235708; 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 Monroe City?
In a normal year in Monroe City, 30 days a year reach 90°F (2 of them 100°F or more) and 121 nights fall to 32°F or colder.
- Days at 90°F or more
- 30a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 121a normal year
- Days that stay below freezing
- 33high of 32°F or less
The highest temperature in this station's record (since 1901) is 108°F, on July 30, 1980; the lowest is −28°F, on February 13, 1905.
The wettest calendar year on that record is 1973, with 61.13 in; the snowiest season is 1977–78, with 49.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00235708; records: ACIS (NOAA Regional Climate Centers), station USC00235708. Records use complete months only; a month missing more than three days is left out.
How sunny is Monroe City?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Monroe City, 4.2 kWh per square metre a day. July is the sunniest month (82%) and December the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 66% | 2.0 |
| February | 68% | 2.9 |
| March | 68% | 3.8 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 79% | 6.4 |
| July | 82% | 6.4 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.3 |
| November | 72% | 2.3 |
| December | 65% | 1.8 |
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 Monroe City need?
A normal year in Monroe City brings 5,508 heating degree days, 3% more than the median U.S. place (5,373), and 1,145 cooling degree days, 26% 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 3,669 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,184 | 0 |
| February | 964 | 0 |
| March | 724 | 3 |
| April | 376 | 13 |
| May | 141 | 90 |
| June | 8 | 237 |
| July | 2 | 349 |
| August | 5 | 293 |
| September | 78 | 133 |
| October | 324 | 24 |
| November | 678 | 2 |
| December | 1,024 | 0 |
| Year (annual) | 5,508 | 1,145 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00235708. 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 Monroe City been warmer than normal lately?
2022 averaged 51.8°F, 1.1°F below the 1991-2020 normal of 52.9°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 51.8°F | −1.1°F | 35.49 |
Source: observed years: ACIS, station USC00235708. A year counts only with all twelve months complete.
How does Monroe City's climate compare?
Monroe City is warmer than 23 of the other 133 places with their own NOAA record in Missouri, and wetter than 40. Across the 7,247 U.S. stations with normals, its annual mean of 52.9°F is warmer than 53%.
In the Köppen classification computed from these normals, Monroe City 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 Monroe City share this climate record?
4 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.
- Center, MO539 people · 13 mi SE
- Hunnewell, MO135 people · 8 mi W
- Stoutsville, MO37 people · 9 mi SW
- Florida, MO0 people · 10 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 Monroe City's climate
What is the coldest month in Monroe City?
January, with a normal high of 36°F and a normal low of 18°F. The warmest is July (86°F by day, 66°F at night).
Does it snow in Monroe City?
Yes. NOAA publishes no 1991-2020 snowfall normal for Monroe City's NOAA station; the nearest record that keeps one, Shelbina (18 miles away), records 16 inches of snow in a normal year.
What is the rainiest month in Monroe City?
June, with 5.36 in of precipitation in a normal year; the driest is January with 1.82 in.
What plant hardiness zone is Monroe City in?
The USDA's 2023 map puts Monroe City in zone 6a in ZIP code 63456, the nearest ZIP area.
How late can frost come in Monroe City?
In half of years the last 32°F night comes after April 12; in one year in ten it comes after April 28. Waiting until April 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Missouri climateThe statewide normals and every place in the state
- Shelbina, MO17 miles from this station, 52.6°F a year
- Hannibal, MO19 miles from this station, 53.0°F a year
- Steffenville, MO25 miles from this station, 52.5°F a year
- Saverton, MO25 miles from this station, 55.0°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made