Kansas City, MO

Missouri · Records since 1888–2026

☀️ 79°F Feels like 87°
Currently in Kansas City
As of 1:00 PM CDT

Records for September 11

🔥 Record High

102°F

September 11, 2000

+21° from 81° normal

❄ Record Low

44°F

September 11, 1940

-15° from 59° normal
🌞 Normal high: 81°F 🌑 Normal low: 59°F 1991–2020 normals

All-Time Records — Kansas City

🔥
113°F
Hottest Day Ever
Aug 14, 1936
❄
-23°F
Coldest Day Ever
Dec 23, 1989
🌧
8.82"
Wettest Day Ever
Sep 12, 1977
☃
16.1"
Most Snow in One Day
Mar 23, 1912

First & Last Dates — Kansas City

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
246 days
Longest growing season
1946
157 days
Shortest growing season
1976
196 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 102°F September 11, 2000
2 101°F September 11, 1936
3 100°F September 11, 1956
4 95°F September 11, 2013
5 95°F September 11, 1953
6 95°F September 11, 1939
7 95°F September 11, 1933
8 94°F September 11, 1963
9 94°F September 11, 1938
10 94°F September 11, 1897

Top 5 Record Lows — September 11

# Temp Date
🥶 44°F September 11, 1940
2 47°F September 11, 1992
3 47°F September 11, 1968
4 48°F September 11, 2007
5 48°F September 11, 1917
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1888–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Kansas City

threshold: 96°F (90th percentile of historical Jun–Aug highs)
5.0
Avg heat wave length
days (historical)
102°
Avg peak temp
during heat waves
46
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

Days ≥ 90°F Per Year

1888–2026
41
2026 so far
40
Avg/year 1970–2025
39
Avg/year (last 10 complete)
90
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Kansas City

# Dates Days Peak Avg High Avg Overnight Low
🏆 Aug 8, 1936 – Aug 27, 1936 20 113°F (Aug 14) 106°F 79°F
2 Jul 8, 1934 – Jul 26, 1934 19 110°F (Jul 24) 105°F 79°F
3 Jul 8, 1901 – Jul 25, 1901 18 106°F (Jul 22) 102°F 78°F
4 Jul 3, 1936 – Jul 19, 1936 17 109°F (Jul 14) 104°F 77°F
5 Jul 4, 1980 – Jul 20, 1980 17 106°F (Jul 14) 102°F 77°F
6 Jul 31, 1934 – Aug 15, 1934 16 111°F (Aug 10) 105°F 78°F
7 Aug 1, 1947 – Aug 13, 1947 13 106°F (Aug 9) 100°F 77°F
8 Aug 4, 1913 – Aug 16, 1913 13 103°F (Aug 5) 100°F 79°F
9 Jul 14, 2012 – Jul 25, 2012 12 106°F (Jul 18) 101°F 72°F
10 Aug 16, 2003 – Aug 26, 2003 11 106°F (Aug 21) 102°F 73°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

54
2026 total
above-normal nights
47.7
Avg / summer
1970–2020
76
Most in a summer
1901

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1888–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1888, annual totals have trended +0.26" per decade, about +3.5" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How Kansas City is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

153 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

39.74"
2026 YTD
Normal: 29.87"
+9.87"
1.44"
September so far
September normal: 4.04"
-2.60"
13
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Kansas City is 9.87" ahead of the normal pace

Period Review — Aug 11 – Sep 10, 2026

Any window, evaluated against every other year on record — 31 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
79.8°F
Average temperature
18th-warmest of 139
+4.7°
vs. average
Normal: 75.1°F (1991–2020)
5.04"
Precipitation
41st-wettest of 138
+0.47"
vs. average
Normal: 4.57" · 110% of normal

Average Temperature by Year — Aug 11 – Sep 10

1888–2026 · 2026 highlighted

Precipitation by Year — Aug 11 – Sep 10

1888–2026 · 2026 highlighted · trend -0.01" per decade (drier since 1888)

Warmest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1936 87.2°F
2 1947 85.2°F
3 1913 84.5°F
4 1954 82.1°F
5 1983 82.1°F
6 1912 81.8°F
7 2000 81.5°F
8 1937 81.4°F
9 1959 81.2°F
10 1925 81.2°F

Coolest Aug 11 – Sep 10 on Record

# Year Avg Temp
1 1992 69.0°F
2 1974 69.7°F
3 1891 70.0°F
4 2008 70.5°F
5 1915 70.5°F
6 1950 70.5°F
7 1890 70.6°F
8 1981 70.8°F
9 1986 70.9°F
10 1920 71.1°F

Wettest Aug 11 – Sep 10 on Record

# Year Total
1 1989 15.21"
2 1914 12.53"
3 2016 10.51"
4 1903 10.40"
5 1969 9.91"
6 1951 9.44"
7 1982 9.24"
8 1975 8.50"
9 2009 8.39"
10 2005 8.38"

Driest Aug 11 – Sep 10 on Record

# Year Total
1 1967 0.20"
2 2000 0.47"
3 2025 0.69"
4 1976 0.81"
5 1956 0.93"
6 1968 0.97"
7 1983 1.04"
8 2013 1.08"
9 1986 1.11"
10 1939 1.13"
About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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