Brookfield, Missouri climate: Normal weather by month, frost dates and records
Brookfield's normal year runs from 18°F January nights to 87°F July afternoons, with 42.2 inches of precipitation and 19 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.0°C, January lows of −8°C, July highs of 31°C, 1,072 mm of precipitation a year.
- NOAA stationBrookfield
- Station IDUSC00230980
- Location39.77°N 93.06°W
- Elevation767 ft (234 m)
- From the center2 miles
- Population4,110
On October 23, the normal high in Brookfield is 64°F and the normal low 42°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Brookfield.
- Jan 36° 18°
- Feb 42° 22°
- Mar 54° 32°
- Apr 65° 42°
- May 74° 54°
- Jun 83° 63°
- Jul 87° 67°
- Aug 86° 65°
- Sep 79° 56°
- Oct 67° 45°
- Nov 53° 33°
- 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 Brookfield each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 18°F. The most precipitation falls in May (5.53 in), the least in January (1.50 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 18°F | 26.9°F | 1.50 | 4.8 | 7 | <1 | 29 | 9 h 40 min |
| February | 42°F | 22°F | 31.5°F | 1.82 | 5.9 | 8 | <1 | 24 | 10 h 40 min |
| March | 54°F | 32°F | 42.8°F | 2.90 | 2.5 | 10 | <1 | 17 | 11 h 50 min |
| April | 65°F | 42°F | 53.6°F | 3.95 | 0.2 | 12 | <1 | 5 | 13 h 10 min |
| May | 74°F | 54°F | 63.9°F | 5.53 | 0.0 | 13 | <1 | <1 | 14 h 20 min |
| June | 83°F | 63°F | 73.3°F | 5.49 | 0.0 | 11 | 5 | <1 | 15 h |
| July | 87°F | 67°F | 77.4°F | 4.92 | 0.0 | 10 | 10 | <1 | 14 h 40 min |
| August | 86°F | 65°F | 75.5°F | 4.37 | 0.0 | 9 | 9 | <1 | 13 h 50 min |
| September | 79°F | 56°F | 67.6°F | 3.99 | 0.0 | 8 | 3 | <1 | 12 h 30 min |
| October | 67°F | 45°F | 55.9°F | 3.43 | 0.1 | 9 | <1 | 4 | 11 h 10 min |
| November | 53°F | 33°F | 42.7°F | 2.52 | 1.2 | 8 | <1 | 16 | 10 h |
| December | 41°F | 23°F | 31.8°F | 1.80 | 4.2 | 7 | <1 | 26 | 9 h 20 min |
| Year (annual) | 64°F | 43°F | 53.6°F | 42.22 | 18.9 | 110 | 28 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −8°C | −2.8°C | 38 mm | 12 cm |
| February | 5°C | −6°C | −0.3°C | 46 mm | 15 cm |
| March | 12°C | 0°C | 6.0°C | 74 mm | 6 cm |
| April | 18°C | 6°C | 12.0°C | 100 mm | 1 cm |
| May | 24°C | 12°C | 17.7°C | 140 mm | 0 cm |
| June | 29°C | 17°C | 22.9°C | 139 mm | 0 cm |
| July | 31°C | 20°C | 25.2°C | 125 mm | 0 cm |
| August | 30°C | 18°C | 24.2°C | 111 mm | 0 cm |
| September | 26°C | 13°C | 19.8°C | 101 mm | 0 cm |
| October | 20°C | 7°C | 13.3°C | 87 mm | 0 cm |
| November | 12°C | 0°C | 5.9°C | 64 mm | 3 cm |
| December | 5°C | −5°C | −0.1°C | 46 mm | 11 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00230980; 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 Brookfield?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, September has the fewest days with rain (8).
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 USC00230980.
When is the last frost in Brookfield?
In Brookfield, the last spring frost (32°F) comes after April 14 in half of years and after April 28 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 9 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 141 year in 10 after April 28; 9 in 10 after March 31
- First autumn frost, half of years before
- October 231 year in 10 before October 9; 9 in 10 before November 3
NOAA puts the median frost-free season at 192 days, and the season without a hard freeze (28°F) at 211 days.
A hard freeze (28°F) comes after April 3 in half of springs and before November 1 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Brookfield in zone 6a in ZIP code 64628, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Brookfield's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (25 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 USC00230980; 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 Brookfield?
In a normal year in Brookfield, 28 days a year reach 90°F (1 of them 100°F or more), 121 nights fall to 32°F or colder and 110 days bring measurable precipitation.
- Days at 90°F or more
- 28a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 121a normal year
- Days that stay below freezing
- 32high of 32°F or less
- Days with 0.01 inch of precipitation
- 110a normal year
- Days with 1 inch of snow or more
- 8a normal year
The highest temperature in this station's record (since 1941) is 116°F, on July 14, 1954; the lowest is −24°F, on December 23, 1989.
The wettest calendar year on that record is 2008, with 61.82 in; the snowiest season is 2010–11, with 51.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00230980; records: ACIS (NOAA Regional Climate Centers), station USC00230980. Records use complete months only; a month missing more than three days is left out.
How sunny is Brookfield?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Brookfield, 4.2 kWh per square metre a day. July is the sunniest month (83%) and January the cloudiest (68%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 68% | 2.1 |
| February | 70% | 2.9 |
| March | 68% | 3.8 |
| April | 71% | 5.0 |
| May | 73% | 5.7 |
| June | 80% | 6.4 |
| July | 83% | 6.5 |
| August | 81% | 5.6 |
| September | 82% | 4.8 |
| October | 75% | 3.3 |
| November | 73% | 2.4 |
| December | 68% | 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 Brookfield need?
A normal year in Brookfield brings 5,373 heating degree days, 0% more than the median U.S. place (5,373), and 1,247 cooling degree days, 37% 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 3,843 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,181 | 0 |
| February | 937 | 0 |
| March | 693 | 3 |
| April | 358 | 14 |
| May | 120 | 88 |
| June | 10 | 260 |
| July | 1 | 383 |
| August | 2 | 327 |
| September | 65 | 143 |
| October | 310 | 28 |
| November | 669 | 1 |
| December | 1,029 | 0 |
| Year (annual) | 5,373 | 1,247 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00230980. 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 Brookfield been warmer than normal lately?
Over 63 complete years from 1942 to 2017, the station's annual mean temperature rose at a fitted 1.4°F per century (+0.07°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Brookfield's climate compare?
Brookfield is warmer than 31 of the other 133 places with their own NOAA record in Missouri, and wetter than 47. Across the 7,247 U.S. stations with normals, its annual mean of 53.6°F is warmer than 55%.
In the Köppen classification computed from these normals, Brookfield 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 Brookfield share this climate record?
5 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.
- Marceline, MO2,130 people · 7 mi SE
- Bucklin, MO412 people · 9 mi E
- Sumner, MO81 people · 12 mi SW
- Rothville, MO65 people · 8 mi S
- St. Catharine, MO1 people · 4 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 Brookfield's climate
What is the coldest month in Brookfield?
January, with a normal high of 36°F and a normal low of 18°F. The warmest is July (87°F by day, 67°F at night).
Does it snow in Brookfield?
Yes: 19 inches in a normal year, falling on 11 days with 0.1 inch or more, the most in February (5.9 inches).
What is the rainiest month in Brookfield?
May, with 5.53 in of precipitation in a normal year; the driest is January with 1.50 in.
What plant hardiness zone is Brookfield in?
The USDA's 2023 map puts Brookfield in zone 6a in ZIP code 64628, the nearest ZIP area. By the same method at Brookfield's NOAA station, the coldest night of a typical year reaches −8°F (25 years, 1991-2020): zone 6a.
How late can frost come in Brookfield?
In half of years the last 32°F night comes after April 14; 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
- Linneus, MO8 miles from this station, 52.1°F a year
- Brunswick, MO24 miles from this station, 54.1°F a year
- Salisbury, MO27 miles from this station, 54.0°F a year
- Chillicothe, MO28 miles from this station, 53.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made