Lamar, Missouri climate: Normal weather by month, frost dates and records
Lamar's normal year runs from 22°F January nights to 88°F July afternoons, with 48.9 inches of precipitation and 7 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.3°C, January lows of −5°C, July highs of 31°C, 1,241 mm of precipitation a year.
- NOAA stationLamar (7 mi N)
- Station IDUSC00234705
- Location37.60°N 94.28°W
- Elevation963 ft (294 m)
- Population4,299
On October 23, the normal high in Lamar is 67°F and the normal low 43°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 Lamar.
- Jan 43° 22°
- Feb 48° 26°
- Mar 57° 34°
- Apr 67° 44°
- May 75° 54°
- Jun 84° 63°
- Jul 88° 67°
- Aug 88° 66°
- Sep 80° 57°
- Oct 70° 46°
- Nov 57° 35°
- Dec 46° 26°
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 Lamar each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 22°F. The most precipitation falls in May (7.10 in), the least in January (1.96 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 43°F | 22°F | 32.4°F | 1.96 | 3.2 | 6 | <1 | 26 | 9 h 50 min |
| February | 48°F | 26°F | 36.7°F | 2.25 | 1.8 | 6 | <1 | 21 | 10 h 50 min |
| March | 57°F | 34°F | 45.7°F | 3.31 | 1.4 | 8 | <1 | 13 | 11 h 50 min |
| April | 67°F | 44°F | 55.3°F | 5.10 | 0.0 | 9 | <1 | 3 | 13 h 10 min |
| May | 75°F | 54°F | 64.5°F | 7.10 | 0.0 | 11 | 1 | <1 | 14 h 10 min |
| June | 84°F | 63°F | 73.5°F | 6.25 | 0.0 | 10 | 6 | <1 | 14 h 40 min |
| July | 88°F | 67°F | 77.9°F | 4.62 | 0.0 | 8 | 15 | <1 | 14 h 30 min |
| August | 88°F | 66°F | 76.8°F | 3.78 | 0.0 | 7 | 15 | <1 | 13 h 40 min |
| September | 80°F | 57°F | 68.9°F | 4.78 | 0.0 | 7 | 5 | <1 | 12 h 30 min |
| October | 70°F | 46°F | 57.6°F | 3.75 | 0.0 | 8 | <1 | 2 | 11 h 20 min |
| November | 57°F | 35°F | 45.8°F | 3.53 | 0.2 | 7 | <1 | 12 | 10 h 10 min |
| December | 46°F | 26°F | 36.0°F | 2.43 | 0.7 | 6 | <1 | 23 | 9 h 40 min |
| Year (annual) | 67°F | 45°F | 55.9°F | 48.86 | 7.3 | 94 | 42 | 100 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 6°C | −5°C | 0.2°C | 50 mm | 8 cm |
| February | 9°C | −3°C | 2.6°C | 57 mm | 5 cm |
| March | 14°C | 1°C | 7.6°C | 84 mm | 4 cm |
| April | 19°C | 7°C | 12.9°C | 130 mm | 0 cm |
| May | 24°C | 12°C | 18.1°C | 180 mm | 0 cm |
| June | 29°C | 17°C | 23.1°C | 159 mm | 0 cm |
| July | 31°C | 20°C | 25.5°C | 117 mm | 0 cm |
| August | 31°C | 19°C | 24.9°C | 96 mm | 0 cm |
| September | 27°C | 14°C | 20.5°C | 121 mm | 0 cm |
| October | 21°C | 8°C | 14.2°C | 95 mm | 0 cm |
| November | 14°C | 2°C | 7.7°C | 90 mm | 1 cm |
| December | 8°C | −3°C | 2.2°C | 62 mm | 2 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00234705; 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 Lamar?
Normal highs sit between 65°F and 85°F in April, May, June, 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 USC00234705.
When is the last frost in Lamar?
In Lamar, the last spring frost (32°F) comes after April 9 in half of years and after April 28 in one year in ten; the first autumn frost comes before October 27 in half of years and before October 13 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 91 year in 10 after April 28; 9 in 10 after March 26
- First autumn frost, half of years before
- October 271 year in 10 before October 13; 9 in 10 before November 10
NOAA puts the median frost-free season at 199 days, and the season without a hard freeze (28°F) at 220 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Lamar in zone 7a in ZIP code 64759, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Lamar's NOAA station is in zone 7a: the coldest night of a typical year reaches 1°F (27 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 USC00234705; 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 Lamar?
In a normal year in Lamar, 42 days a year reach 90°F (3 of them 100°F or more), 100 nights fall to 32°F or colder and 94 days bring measurable precipitation.
- Days at 90°F or more
- 42a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 100a normal year
- Days that stay below freezing
- 16high of 32°F or less
- Days with 0.01 inch of precipitation
- 94a normal year
- Days with 1 inch of snow or more
- 2a normal year
The highest temperature in this station's record (since 1890) is 118°F, on July 18, 1936; the lowest is −28°F, on February 13, 1905.
The wettest calendar year on that record is 2019, with 68.32 in; the snowiest season is 1969–70, with 29.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00234705; records: ACIS (NOAA Regional Climate Centers), station USC00234705. Records use complete months only; a month missing more than three days is left out.
How sunny is Lamar?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Lamar, 4.4 kWh per square metre a day. July is the sunniest month (84%) and February the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 2.4 |
| February | 69% | 3.0 |
| March | 69% | 4.0 |
| April | 72% | 5.1 |
| May | 73% | 5.7 |
| June | 82% | 6.7 |
| July | 84% | 6.5 |
| August | 82% | 5.8 |
| September | 82% | 4.9 |
| October | 77% | 3.6 |
| November | 74% | 2.6 |
| December | 71% | 2.1 |
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 Lamar need?
A normal year in Lamar brings 4,620 heating degree days, 14% fewer than the median U.S. place (5,373), and 1,341 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 4,084 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,009 | 0 |
| February | 791 | 0 |
| March | 602 | 3 |
| April | 309 | 18 |
| May | 107 | 90 |
| June | 9 | 262 |
| July | 1 | 400 |
| August | 2 | 367 |
| September | 50 | 166 |
| October | 262 | 32 |
| November | 580 | 3 |
| December | 899 | 0 |
| Year (annual) | 4,620 | 1,341 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00234705. 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 Lamar been warmer than normal lately?
2025 averaged 56.6°F, 0.7°F above the 1991-2020 normal of 55.9°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 57.2°F | +1.3°F | 50.17 | 18.3 |
| 2022 | 56.0°F | +0.1°F | 33.01 | 20.9 |
| 2023 | 58.2°F | +2.3°F | 28.20 | 3.5 |
| 2024 | 58.6°F | +2.7°F | 42.40 | 1.3 |
| 2025 | 56.6°F | +0.7°F | 44.93 | 16.5 |
Over 102 complete years from 1895 to 2025, the station's annual mean temperature rose at a fitted 0.4°F per century (+0.02°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00234705; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Lamar's climate compare?
Lamar is warmer than 87 of the other 133 places with their own NOAA record in Missouri, and wetter than 114. Across the 7,247 U.S. stations with normals, its annual mean of 55.9°F is warmer than 63%.
In the Köppen classification computed from these normals, Lamar 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 Lamar 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.
- Sheldon, MO436 people · 4 mi N
- Mulberry, KS411 people · 19 mi W
- Arcadia, KS257 people · 19 mi W
- Lamar Heights, MO170 people · 7 mi S
- Iantha, MO64 people · 9 mi SW
- Irwin, MO37 people · 1 mi S
- Milford, MO27 people · 7 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.
Questions about Lamar's climate
What is the coldest month in Lamar?
January, with a normal high of 43°F and a normal low of 22°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Lamar?
Yes: 7 inches in a normal year, falling on 4 days with 0.1 inch or more, the most in January (3.2 inches).
What is the rainiest month in Lamar?
May, with 7.10 in of precipitation in a normal year; the driest is January with 1.96 in.
What plant hardiness zone is Lamar in?
The USDA's 2023 map puts Lamar in zone 7a in ZIP code 64759, the nearest ZIP area. By the same method at Lamar's NOAA station, the coldest night of a typical year reaches 1°F (27 years, 1991-2020): zone 7a.
How late can frost come in Lamar?
In half of years the last 32°F night comes after April 9; 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
- Nevada, MO17 miles from this station, 56.1°F a year
- Lockwood, MO23 miles from this station, 56.3°F a year
- Eldorado Springs, MO24 miles from this station, 56.2°F a year
- Pittsburg, KS27 miles from this station, 57.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made