Lenexa, Kansas climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Lenexa's center at January lows of 20°F and July highs of 89°F, a yearly mean of 55.3°F and 39.1 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Overland Park (6 miles SE, 1,055 ft), has January lows of 20°F and July highs of 88°F.
59,427 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 39° 20°
- Feb 45° 24°
- Mar 56° 35°
- Apr 66° 44°
- May 75° 55°
- Jun 85° 64°
- Jul 89° 68°
- Aug 88° 67°
- Sep 80° 58°
- Oct 68° 46°
- Nov 54° 34°
- Dec 43° 25°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Lenexa's center.
What is each month like in Lenexa?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Overland Park high | Overland Park low |
|---|---|---|---|---|---|---|
| January | 39°F | 20°F | 29.7°F | 1.14 | 39°F | 20°F |
| February | 45°F | 24°F | 34.6°F | 1.49 | 44°F | 24°F |
| March | 56°F | 35°F | 45.3°F | 2.38 | 55°F | 34°F |
| April | 66°F | 44°F | 55.1°F | 3.93 | 65°F | 44°F |
| May | 75°F | 55°F | 65.1°F | 5.35 | 75°F | 56°F |
| June | 85°F | 64°F | 74.4°F | 5.16 | 84°F | 65°F |
| July | 89°F | 68°F | 78.6°F | 4.47 | 88°F | 69°F |
| August | 88°F | 67°F | 77.1°F | 4.37 | 87°F | 67°F |
| September | 80°F | 58°F | 68.7°F | 3.88 | 79°F | 58°F |
| October | 68°F | 46°F | 56.7°F | 3.21 | 68°F | 47°F |
| November | 54°F | 34°F | 44.2°F | 2.13 | 54°F | 35°F |
| December | 43°F | 25°F | 33.7°F | 1.58 | 43°F | 25°F |
In metric: a yearly mean of 12.9°C, January lows of −7°C, July highs of 32°C and 993 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Lenexa say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Overland ParkOlathe (3 mi E) | 6 mi SE | 1,055 ft | 55.1°F | 20°F | 88°F | 40.7 | 14 | April 10 |
| Bonner Springs | 8 mi NW | 850 ft | 53.6°F | 18°F | 87°F | 40.5 | 17 | April 16 |
| OlatheOlathe Johnson County Exec Airport | 9 mi SE | 1,070 ft | 55.1°F | 21°F | 88°F | 37.7 | – | April 8 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Lenexa?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Overland Park (6 miles SE, 1,055 ft). It gets 14 inches of snow in a normal year. The last spring frost (32°F) comes after April 10 in half of years and the first autumn frost before October 29. Its record high is 114°F (1954) and its record low −29°F (1899) (kept since 1893).
The USDA's 2023 Plant Hardiness Zone Map puts Lenexa in zone 6b across its 6 ZIP code areas.
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (4.3 kWh per square metre a day, NASA POWER 2001-2020); July is the sunniest month (83%) and March the cloudiest (69%).
Overland Park's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Lenexa; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USC00145972; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Lenexa, ZIP code by ZIP code?
6 ZIP code areas lie wholly or partly in Lenexa. On NOAA's grid 66220 is the warmest (55.3°F a year) and 66219 the coolest (55.1°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 66214 | 6b | 55.1°F | 21°F | 88°F | 39.8 | Overland Park (6 mi) | April 10 | October 29 |
| 66215 | 6b | 55.1°F | 20°F | 88°F | 39.7 | Overland Park (5 mi) | April 10 | October 29 |
| 66216 | 6b | 55.2°F | 21°F | 88°F | 39.7 | Overland Park (9 mi) | April 10 | October 29 |
| 66219 | 6b | 55.1°F | 20°F | 89°F | 39.5 | Overland Park (5 mi) | April 10 | October 29 |
| 66220 | 6b | 55.3°F | 20°F | 89°F | 39.1 | Overland Park (6 mi) | April 10 | October 29 |
| 66227 | 6b | 55.2°F | 20°F | 89°F | 39.3 | Bonner Springs (6 mi) | April 16 | October 22 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.