Climate Analysis Hub — Trenton, MO

🌡️ Temperature 🌧️ Rainfall

Temperature patterns, bucket probabilities, and historical milestones.
1896–2025 · 114 complete years. Incomplete years (including 2026) are listed but not averaged.

📅 Daily Temperature Profile · September 23

Daily High Range

71° – 80°F

Typical 50% Spread · Mean 76.2°F

Daily Low Range

47° – 60°F

Typical 50% Spread · Mean 53°F

Most Likely High Decade

70s

59 of 116 years (51%)

Most Likely Low Decade

50s

44 of 116 years (38%)

Day Temperature Decade	-10s	0s	10s	20s	30s	40s	50s	60s	70s	80s	90s	100s	110s	Years
Daily HighsHistorical maximums on September 23	—	—	—	—	—	—	—	21	59	30	6	—	—	116
Daily LowsHistorical minimums on September 23	—	—	—	1	4	38	44	29	—	—	—	—	—	116

🔥 Historical Temperature Trend · September 23 (1893–Present) Departure from Normal (Mean 64.6°F) · Shaded Area: High/Low Band

🔥 Warmest Highs on Record

#1 2017 94.0°F
#2 1939 94.0°F
#3 1938 92.0°F

❄️ Coldest Lows on Record

#1 1983 29.0°F
#2 2012 35.0°F
#3 1895 38.0°F

⚡ Largest Swing & Thresholds

Largest Swing: 44°F (1938)

Low 48°F → High 92°F

Low ≤ 32°F: 1% (1/116)

High ≥ 90°F: 5% (6/116)

Low ≤ 0°F: 0% (0/116)

High ≥ 100°F: 0% (0/116)

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

🌡️ Monthly Temperature Profile · December

Historical temperature patterns for December across complete years (1896–2025 · 114 complete years).

Warmest December

40.2°F

Recorded in 1965 · Mean Temp

All-Time Peak Monthly Mean

Coldest December

12.0°F

Recorded in 1983 · Mean Temp

All-Time Coldest Monthly Mean

Normal December Temp

30.1°F

Avg High: 38.9°F

Avg Low: 21.3°F

Avg Warmest Day of December

4th

Mean High: 60.0°F
Typical date of month's highest temperature

2026 Warmest High So Far:

56.0°F (Dec 23)

Avg Coldest Day of December

23rd

Mean Low: -0.3°F
Typical date of month's lowest temperature

2026 Coldest Low So Far:

3.0°F (Dec 14)

All-Time Monthly Extremes

Hottest December High:
74.0°F

Set in 2021

Coldest December Low:

-24.0°F

Set in 1983

Day of Week Temp Climatology

Warmest Day of Week:
Saturday

Mean: 31.1°F

Coldest Day of Week:

Wednesday

Mean: 29.9°F

🔥 Historical Temperature Trend · Month of December (1893–Present) Departure from Normal (Mean 30.1°F) · Line: 30-Year Centered Average

Period	-10s	0s	10s	20s	30s	40s	50s	60s	70s	80s	90s	100s	110s	Days
Month to date (Highs)December · Dec 1 – Dec 31	0	0	1	5	8	5	10	0	0	0	0	0	0	29
Monthly average (Highs)typical through Dec 31	0	0	1	4	10	9	5	1	0	0	0	0	0	30
Record highmost days in bin through Dec 31	31983	51917	102000	121945	211944	201912	121979	91939	12021	02025	02025	02025	02025	—
Record lowfewest days in bin through Dec 31	02025	02025	02024	02023	01955	01983	01985	02025	02025	02025	02025	02025	02025	—

🌡️ Annual Temperature Milestones & Frequencies (All-Time Normal)

Average date of first calendar-year arrival and typical annual occurrences across 114 complete years (1896–2025 · 114 complete years).

First High ≥ 90°F

June 3

Earliest: Apr 3
Latest: Aug 3

Annual Avg Days:

36.9 days/yr

Record: 90 days (1936)

First High ≥ 100°F

July 17

Earliest: May 30
Latest: Aug 31 (hit in 49/114 yrs)

Annual Avg Days:

3.5 days/yr

Record: 53 days (1936)

Average Warmest Day

July 26

Mean High: 99.6°F
Earliest: May 13 · Latest: Sep 28

2026 Warmest High So Far:

100.0°F (Jul 26)

First Low ≤ 32°F

January 1

Earliest: Jan 1
Latest: Jan 3

Annual Avg Days:

120.9 days/yr

Record: 151 days (1976)

First Low ≤ 0°F

January 15

Earliest: Dec 12
Latest: Mar 12 (hit in 109/114 yrs)

Annual Avg Days:

8.6 days/yr

Record: 30 days (1979)

Average Coldest Day

January 18

Mean Low: -11.1°F
Earliest: Nov 30 · Latest: Mar 12

2026 Coldest Low So Far:

-5.0°F (Jan 23)

All-Time Day of Week Temperature Climatology

Warmest Day: Sunday (avg mean 53.4°F)

Coldest Day: Friday (avg mean 53.1°F)

🔥 Annual Mean Temperature Climate Stripe (1893–Present) Departure from Normal (Mean 53.1°F) · Line: 30-Year Centered Average

Temperature decades (daily high)

Days whose daily maximum fell in each 10°F range through this same calendar date. 1896–2025 · 114 complete years.

Period	-10s	0s	10s	20s	30s	40s	50s	60s	70s	80s	90s	100s	110s	Days
Season to datemeteorological winter	0	0	1	5	8	5	10	0	0	0	0	0	0	29
Season averagetypical winter through Dec 31	0	0	1	4	10	9	5	1	0	0	0	0	0	30
Record highmost days in bin through Dec 31	31983	51917	102000	121945	211944	201912	121979	91939	12021	02025	02025	02025	02025	—
Record lowfewest days in bin through Dec 31	02025	02025	02024	02023	01955	01983	01985	02025	02025	02025	02025	02025	02025	—

Year to date2025-01-01 – 2025-12-31	0	3	8	17	32	27	49	44	68	82	29	0	0	359
Yearly averagetypical through Dec 31	0	1	6	15	37	43	44	46	59	72	33	3	0	360
Record highmost days in bin through Dec 31	31983	111936	181979	341978	631915	671923	661953	681946	961915	1051962	692018	421936	111936	—
Record lowfewest days in bin through Dec 31	02025	02023	02024	21946	141961	272025	231960	271950	312018	441936	21915	02025	02025	—

Temperature decades (daily low)

Days whose daily minimum fell in each 10°F range through this same calendar date. 1896–2025 · 114 complete years.

Period	-10s	0s	10s	20s	30s	40s	50s	60s	70s	80s	90s	100s	110s	Days
Season to datemeteorological winter	0	3	14	5	3	4	0	0	0	0	0	0	0	29
Season averagetypical winter through Dec 31	2	3	7	11	7	1	0	0	0	0	0	0	0	30
Record highmost days in bin through Dec 31	121983	101976	162010	201947	171923	61965	31913	02025	02025	02025	02025	02025	02025	—
Record lowfewest days in bin through Dec 31	02025	02024	01955	01955	02010	02022	02025	02025	02025	02025	02025	02025	02025	—

Year to date2025-01-01 – 2025-12-31	11	17	29	36	49	58	62	72	25	0	0	0	0	359
Yearly averagetypical through Dec 31	8	13	26	53	61	50	59	69	22	0	0	0	0	360
Record highmost days in bin through Dec 31	31983	111936	181979	341978	631915	671923	661953	681946	961915	1051962	692018	421936	111936	—
Record lowfewest days in bin through Dec 31	02025	02023	02024	21946	141961	272025	231960	271950	312018	441936	21915	02025	02025	—

2026 so far — hottest: Jul 26 · 100.0°F | coldest: Jan 23 · -5.0°F (not used in the averages yet)

Year by year

Year	Warmest day	High	Coldest day	Low
2026	Jul 26, 2026	100.0°	Jan 23, 2026	-5.0°	excluded
2025	Sep 14, 2025	96.0°	Jan 21, 2025	-10.0°
2024	Jun 25, 2024	98.0°	Jan 14, 2024	-16.0°
2023	Jul 29, 2023	99.0°	Jan 31, 2023	3.0°
2022	Sep 21, 2022	97.0°	Dec 23, 2022	-9.0°
2021	Jul 30, 2021	96.0°	Feb 16, 2021	-11.0°
2020	Jul 9, 2020	94.0°	Feb 15, 2020	-9.0°
2019	Jul 20, 2019	97.0°	Jan 30, 2019	-15.0°
2018	Jul 13, 2018	103.0°	Jan 1, 2018	-15.0°
2017	Jul 22, 2017	99.0°	Dec 27, 2017	-9.0°
2016	Jun 16, 2016	100.0°	Dec 18, 2016	-11.0°
2015	Jul 14, 2015	100.0°	Feb 6, 2015	-9.0°
2014	Jul 23, 2014	97.0°	Jan 6, 2014	-11.0°
2013	Aug 31, 2013	104.0°	Dec 24, 2013	-16.0°
2012	Jul 8, 2012	108.0°	Feb 11, 2012	6.0°
2011	Jul 24, 2011	104.0°	Feb 3, 2011	-10.0°
2010	Aug 4, 2010	99.0°	Jan 3, 2010	-10.0°
2009	Jun 24, 2009	100.0°	Jan 15, 2009	-9.0°
2008	Aug 5, 2008	99.0°	Jan 24, 2008	-8.0°
2007	Aug 15, 2007	102.0°	Feb 17, 2007	-4.0°
2006	Jul 30, 2006	104.0°	Feb 18, 2006	-1.0°
2005	Jul 24, 2005	105.0°	Dec 9, 2005	-3.0°
2004	Jul 20, 2004	96.0°	Jan 28, 2004	-6.0°
2003	Aug 26, 2003	106.0°	Jan 22, 2003	-7.0°
2002	Jul 27, 2002	101.0°	Mar 4, 2002	-1.0°
2001	Jul 23, 2001	101.0°	Jan 3, 2001	-12.0°
2000	Aug 28, 2000	102.0°	Dec 22, 2000	-7.0°
1999	Jul 29, 1999	105.0°	Jan 4, 1999	-11.0°
1998	Jul 20, 1998	102.0°	Mar 12, 1998	-6.0°
1997	Dec 19, 1997	51.0°	Dec 13, 1997	14.0°	excluded
1987	Jun 14, 1987	101.0°	Mar 10, 1987	18.0°	excluded
1986	Jul 28, 1986	99.0°	Jan 7, 1986	-5.0°	excluded
1985	Jul 9, 1985	97.0°	Jan 20, 1985	-19.0°
1984	Aug 29, 1984	107.0°	Jan 21, 1984	-15.0°
1983	Aug 17, 1983	108.0°	Dec 19, 1983	-24.0°
1982	Aug 3, 1982	97.0°	Jan 10, 1982	-23.0°
1981	Jul 12, 1981	97.0°	Dec 19, 1981	-19.0°
1980	Jul 14, 1980	105.0°	Feb 1, 1980	-16.0°
1979	Jul 13, 1979	97.0°	Jan 15, 1979	-25.0°
1978	Jul 5, 1978	98.0°	Feb 6, 1978	-18.0°
1977	Jul 18, 1977	99.0°	Jan 17, 1977	-24.0°
1976	Aug 10, 1976	102.0°	Dec 31, 1976	-18.0°
1975	Aug 12, 1975	102.0°	Jan 20, 1975	-9.0°
1974	Jul 21, 1974	103.0°	Jan 12, 1974	-24.0°
1973	Aug 26, 1973	97.0°	Jan 9, 1973	-8.0°
1972	Jul 14, 1972	98.0°	Jan 28, 1972	-15.0°
1971	Jun 24, 1971	99.0°	Jan 7, 1971	-15.0°	excluded
1970	Jul 31, 1970	104.0°	Jan 21, 1970	-16.0°
1969	Jul 16, 1969	97.0°	Jan 4, 1969	-10.0°
1968	Jul 12, 1968	95.0°	Dec 31, 1968	-13.0°
1967	Jul 23, 1967	96.0°	Jan 18, 1967	-4.0°
1966	Jul 17, 1966	98.0°	Jan 29, 1966	-16.0°
1965	Jul 13, 1965	93.0°	Jan 30, 1965	-15.0°
1964	Jul 22, 1964	98.0°	Nov 30, 1964	-6.0°
1963	Aug 2, 1963	96.0°	Jan 23, 1963	-17.0°
1962	Aug 19, 1962	94.0°	Jan 11, 1962	-14.0°
1961	Jul 1, 1961	93.0°	Jan 27, 1961	-10.0°
1960	Jul 22, 1960	97.0°	Mar 5, 1960	-14.0°
1959	Aug 28, 1959	98.0°	Jan 4, 1959	-13.0°
1958	Aug 29, 1958	98.0°	Feb 17, 1958	-17.0°
1957	Jul 13, 1957	103.0°	Jan 14, 1957	-9.0°
1956	Jul 27, 1956	103.0°	Dec 13, 1956	-2.0°	excluded
1955	Jul 30, 1955	102.0°	Jan 26, 1955	-11.0°
1954	Jul 14, 1954	110.0°	Jan 20, 1954	-4.0°
1953	Sep 28, 1953	102.0°	Jan 16, 1953	-1.0°
1952	Jun 29, 1952	99.0°	Jan 29, 1952	-1.0°
1951	Aug 6, 1951	97.0°	Feb 1, 1951	-11.0°
1950	Jun 25, 1950	95.0°	Dec 27, 1950	-5.0°
1949	Jul 1, 1949	96.0°	Jan 30, 1949	-19.0°
1948	Aug 23, 1948	102.0°	Jan 28, 1948	-14.0°
1947	Aug 30, 1947	106.0°	Jan 4, 1947	-17.0°
1946	Jul 18, 1946	99.0°	Dec 30, 1946	-1.0°
1945	Jul 24, 1945	100.0°	Dec 19, 1945	-8.0°
1944	Jun 25, 1944	96.0°	Feb 12, 1944	-14.0°
1943	Jul 28, 1943	98.0°	Jan 19, 1943	-16.0°
1942	Aug 1, 1942	100.0°	Jan 4, 1942	-12.0°
1941	Jul 24, 1941	105.0°	Jan 18, 1941	4.0°
1940	Jul 25, 1940	107.0°	Jan 18, 1940	-15.0°
1939	Sep 7, 1939	106.0°	Feb 10, 1939	-4.0°
1938	Jul 11, 1938	108.0°	Jan 31, 1938	-3.0°
1937	Jun 25, 1937	102.0°	Jan 9, 1937	-2.0°
1936	Jul 15, 1936	114.0°	Feb 5, 1936	-20.0°
1935	Aug 9, 1935	103.0°	Jan 21, 1935	-8.0°
1934	Jul 20, 1934	113.0°	Feb 27, 1934	-19.0°
1933	Jun 11, 1933	102.0°	Feb 8, 1933	-15.0°
1932	Jul 15, 1932	100.0°	Dec 16, 1932	-17.0°
1931	Jul 28, 1931	105.0°	Jan 14, 1931	3.0°
1930	Aug 3, 1930	110.0°	Jan 22, 1930	-26.0°
1929	Aug 21, 1929	102.0°	Feb 10, 1929	-18.0°
1928	Jul 6, 1928	95.0°	Jan 1, 1928	-9.0°
1927	Sep 17, 1927	97.0°	Jan 15, 1927	-14.0°
1926	Aug 9, 1926	97.0°	Jan 22, 1926	-8.0°
1925	Sep 5, 1925	95.0°	Dec 27, 1925	-6.0°
1924	Aug 5, 1924	92.0°	Jan 5, 1924	-19.0°
1923	Jun 25, 1923	95.0°	Feb 3, 1923	-3.0°
1922	Jun 14, 1922	94.0°	Feb 13, 1922	0.0°
1921	Jul 17, 1921	94.0°	Dec 25, 1921	2.0°
1920	Jul 23, 1920	96.0°	Dec 28, 1920	-4.0°
1919	Jul 31, 1919	97.0°	Jan 3, 1919	-17.0°
1918	Aug 4, 1918	104.0°	Jan 12, 1918	-20.0°
1917	Jul 30, 1917	99.0°	Feb 2, 1917	-17.0°
1916	Jul 30, 1916	98.0°	Jan 13, 1916	-18.0°
1915	May 13, 1915	90.0°	Jan 28, 1915	-16.0°
1914	Jul 16, 1914	100.0°	Dec 26, 1914	-9.0°
1913	Aug 7, 1913	102.0°	Mar 2, 1913	-7.0°
1912	Jul 23, 1912	97.0°	Jan 12, 1912	-25.0°
1911	Jul 5, 1911	104.0°	Jan 3, 1911	-10.0°
1910	Jul 27, 1910	98.0°	Jan 6, 1910	-16.0°
1909	Aug 17, 1909	98.0°	Dec 29, 1909	-9.0°
1908	Aug 3, 1908	94.0°	Jan 29, 1908	-1.0°
1907	Jul 8, 1907	95.0°	Feb 4, 1907	-12.0°
1906	Jun 17, 1906	94.0°	Jan 8, 1906	-1.0°
1905	Aug 5, 1905	94.0°	Feb 13, 1905	-25.0°
1904	Jul 30, 1904	92.0°	Jan 3, 1904	-16.0°
1903	Jul 10, 1903	96.0°	Feb 17, 1903	-12.0°
1902	Jun 14, 1902	92.0°	Jan 27, 1902	-14.0°
1901	Jul 22, 1901	105.0°	Dec 20, 1901	-14.0°
1900	Aug 21, 1900	96.0°	Jan 31, 1900	-4.0°
1899	Sep 5, 1899	95.0°	Dec 30, 1899	-1.0°	excluded
1898	Jul 19, 1898	95.0°	Feb 1, 1898	-3.0°	excluded
1897	Aug 1, 1897	99.0°	Jan 25, 1897	-9.0°
1896	Aug 8, 1896	99.0°	Jan 4, 1896	0.0°
1895	Sep 17, 1895	97.0°	Dec 5, 1895	5.0°	excluded

Warmest day = year’s highest daily maximum. Coldest day = year’s lowest daily minimum. Decade bins: 90s = 90.0–99.9°F. Record high / low are the most and fewest days ever observed in that bin through this same date. Year is shown under the count; ties keep the most recent year.