Weather on September 20
Shawnee Mission, KS
55 Years of Data
About This Date
September 20th in Shawnee Mission, KS typically brings pleasant fall weather, with average highs around 78°F and lows near 58°F. Over 56 years of records, the warmest September 20th was in 1980 (85°F average), while the coldest was 1991 (50°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 23% of September 20th dates historically, with the wettest September 20th recording 0.77" of rain. The last decade has been 10.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 10.0°F warmer on this date compared to 20-30 years ago.
Planning for September 20th in Shawnee Mission, KS? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 76° | 68° | 72° | — | — |
| 2025 | 80° | 63° | 71° | — | — |
| 2024 | 93° | 68° | 81° | — | — |
| 2023 | 84° | 63° | 73° | — | — |
| 2022 | 97° | 71° | 84° | — | — |
| 2021 | 87° | 63° | 75° | 0.33" | — |
| 2020 | 74° | 50° | 62° | — | — |
| 2019 | 82° | 69° | 76° | 0.01" | — |
| 2018 | 91° | 72° | 81° | — | — |
| 2017 | 86° | 72° | 79° | — | — |
| 2016 | 89° | 70° | 79° | — | — |
| 2015 | 73° | 52° | 62° | — | — |
| 2014 | 83° | 66° | 74° | — | — |
| 2013 | 70° | 55° | 62° | — | — |
| 2012 | 76° | 55° | 65° | — | — |
| 2011 | 81° | 54° | 67° | — | — |
| 2010 | 89° | 69° | 79° | 0.01" | — |
| 2009 | 77° | 63° | 70° | — | — |
| 2008 | 77° | 59° | 68° | — | — |
| 2007 | 87° | 68° | 78° | 0.09" | — |
| 2006 | 67° | 46° | 56° | — | — |
| 2005 | 89° | 67° | 78° | — | — |
| 2004 | 85° | 61° | 73° | — | — |
| 2003 | 66° | 44° | 55° | — | — |
| 2002 | 66° | 58° | 62° | 0.08" | — |
| 2001 | 82° | 59° | 71° | — | — |
| 2000 | 69° | 53° | 61° | — | — |
| 1999 | 67° | 52° | 59° | 0.05" | — |
| 1998 | 84° | 67° | 75° | — | — |
| 1997 | 81° | 53° | 67° | — | — |
| 1996 | 65° | 48° | 56° | 0.5" | — |
| 1995 | 59° | 51° | 55° | 0.77" | — |
| 1994 | 81° | 55° | 68° | — | — |
| 1993 | 75° | 59° | 67° | — | — |
| 1992 | 76° | 58° | 67° | 0.3" | — |
| 1991coldest | 63° | 38° | 50° | — | — |
| 1990 | 77° | 57° | 67° | — | — |
| 1989 | 78° | 54° | 66° | — | — |
| 1988 | 80° | 50° | 65° | 0.07" | — |
| 1987 | 76° | 51° | 63° | — | — |
| 1986 | 87° | 69° | 78° | — | — |
| 1985 | 76° | 57° | 66° | — | — |
| 1984 | 85° | 58° | 71° | — | — |
| 1983 | 77° | 42° | 60° | 0.76" | — |
| 1982 | 69° | 45° | 57° | — | — |
| 1981 | 82° | 54° | 68° | — | — |
| 1980warmest | 93° | 77° | 85° | — | — |
| 1979 | 78° | 57° | 68° | — | — |
| 1978 | 84° | 55° | 70° | — | — |
| 1977 | 71° | 52° | 61° | — | — |
| 1976 | 73° | 61° | 67° | 0.04" | — |
| 1975 | 68° | 46° | 57° | 0.05" | — |
| 1974 | 73° | 57° | 65° | — | — |
| 1973 | 70° | 61° | 65° | — | — |
| 1972 | 85° | 67° | 76° | — | — |
| 1971 | 71° | 41° | 56° | — | — |
Shawnee Mission, KS Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Shawnee Mission, KS Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Shawnee Mission, KS Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Shawnee Mission, KS
Most pleasant months in Shawnee Mission, KS: April, May, September, October.
What to expect on September 20th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 20th outlook →