Record envelope, standing records and threshold days for Monticello (USC00225987), Mississippi, United States, with 119 years of record.
Key Facts for Monticello
Monticello (USC00225987) is a weather station in Mississippi, United States at 31.55 latitude and -90.11 longitude, 58 m (191 ft) above sea level.
The station reports from 1907 to 2025, 119 years of record.
1,464 records set at Monticello still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Monticello set a daily record precipitation of 101.6 mm (4.0 in) on 7 May 2025.
About the Station
Location: Mississippi, United States, 31.55 latitude, -90.11 longitude.
Elevation: 58 m (191 ft).
Period of record: 1907 to 2025, 119 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record
Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Monticello. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Monticello, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.6 C (87.1 F)
-16.1 C (3.0 F)
n/a
n/a
Feb
30.6 C (87.1 F)
-13.3 C (8.1 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-10.0 C (14.0 F)
n/a
n/a
Apr
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
May
38.9 C (102.0 F)
1.7 C (35.1 F)
n/a
n/a
Jun
41.1 C (106.0 F)
7.2 C (45.0 F)
n/a
n/a
Jul
43.3 C (109.9 F)
11.7 C (53.1 F)
n/a
n/a
Aug
42.2 C (108.0 F)
10.0 C (50.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
2.2 C (36.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
33.3 C (91.9 F)
-11.7 C (10.9 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-15.0 C (5.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Monticello still stand. 2015 holds the most, with 39.
Standing records at Monticello by the year they were set
Year set
Standing records
1907
10
1908
15
1909
15
1910
16
1911
29
1912
15
1913
12
1914
14
1915
12
1916
6
1917
26
1918
21
1919
10
1920
10
1921
19
1922
10
1923
17
1924
28
1925
30
1926
8
1927
34
1928
4
1929
16
1930
17
1931
15
1932
19
1933
21
1934
8
1935
23
1936
13
1937
18
1938
6
1939
5
1940
24
1941
7
1942
7
1943
21
1944
9
1945
8
1946
9
1947
8
1948
11
1949
10
1950
15
1951
25
1952
6
1953
12
1954
7
1955
13
1956
11
1957
17
1958
15
1959
11
1960
16
1961
15
1962
14
1963
13
1964
11
1965
12
1966
10
1967
23
1968
13
1969
5
1970
11
1971
5
1972
11
1973
8
1974
18
1975
9
1976
11
1977
9
1978
13
1979
9
1980
13
1981
6
1982
15
1983
11
1984
13
1985
9
1986
2
1987
14
1988
7
1989
21
1990
6
1991
8
1992
2
1993
13
1994
4
1995
6
1996
14
1997
18
1998
16
1999
20
2000
18
2001
14
2002
6
2003
8
2004
19
2005
6
2006
3
2007
4
2008
10
2009
9
2010
24
2011
21
2012
9
2013
18
2014
22
2015
39
2016
10
2017
2
All-Time Record Progression
6 new records
6 all-time records were set at Monticello between 27 January 1940 and 22 July 1997. Each dot is a new record.
When Monticello set new all-time records
Date
Kind
Detail
1940-01-27
Record low minimum temperature
Record low minimum temperature -16.1 C (3.0 F)
1951-02-02
Record low maximum temperature
Record low maximum temperature -5.0 C (23.0 F)
1962-01-11
Record low maximum temperature
Record low maximum temperature -7.2 C (19.0 F)
1974-04-13
Record daily precipitation
Record daily precipitation 273.1 mm (10.8 in)
1989-12-23
Record low maximum temperature
Record low maximum temperature -8.3 C (17.1 F)
1997-07-22
Record high maximum temperature
Record high maximum temperature 43.3 C (109.9 F)
Wettest Day of Each Month
Apr: 273.1 mm (10.8 in)
The wettest day on record for each calendar month at Monticello. The most was 273.1 mm (10.8 in) on 13 April 1974.
Record daily precipitation for each month at Monticello
Month
Record daily precipitation (mm)
Date
Jan
158.8 mm (6.3 in)
28 January 1994
Feb
129.5 mm (5.1 in)
3 February 1956
Mar
136.7 mm (5.4 in)
15 March 1995
Apr
273.1 mm (10.8 in)
13 April 1974
May
200.7 mm (7.9 in)
13 May 1990
Jun
142.2 mm (5.6 in)
14 June 1956
Jul
107.2 mm (4.2 in)
5 July 2007
Aug
195.1 mm (7.7 in)
30 August 2012
Sep
116.8 mm (4.6 in)
30 September 1915
Oct
158.8 mm (6.3 in)
24 October 2020
Nov
165.9 mm (6.5 in)
1 November 1929
Dec
205.7 mm (8.1 in)
4 December 1982
Period of Record Coverage
1907 to 2017
Complete yearUnder 90 percent of days
111 years of record at Monticello, 1907 to 2017. 8 years have data for under 90 percent of days and are left out of rankings: 1907, 1911, 2000, 2002, 2004, 2005, 2016, 2017.
Cooler than the station meanWarmer than the station mean
One stripe for each of 93 complete years at Monticello, 1908 to 2014. Blue stripes are years cooler than the station's own mean of 18.5 C (65.4 F); red stripes are warmer. The coolest year was 1976, at 17.0 C (62.5 F), and the warmest was 1933, at 20.2 C (68.4 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Monticello as warming stripes, 1908 to 2014
Year
Annual mean temperature
Difference from the station mean
1908
19.1 C
+0.58 C
1909
18.9 C
+0.31 C
1913
18.8 C
+0.23 C
1914
18.5 C
-0.04 C
1915
18.7 C
+0.14 C
1916
18.9 C
+0.33 C
1917
17.8 C
-0.79 C
1918
18.4 C
-0.15 C
1920
17.7 C
-0.83 C
1921
19.3 C
+0.75 C
1922
19.4 C
+0.90 C
1923
18.9 C
+0.40 C
1924
18.8 C
+0.22 C
1925
19.4 C
+0.89 C
1927
20.1 C
+1.59 C
1928
18.7 C
+0.16 C
1929
19.0 C
+0.48 C
1930
18.9 C
+0.32 C
1931
19.0 C
+0.49 C
1932
18.9 C
+0.35 C
1933
20.2 C
+1.67 C
1934
19.5 C
+0.94 C
1935
19.6 C
+1.08 C
1936
18.9 C
+0.40 C
1937
18.9 C
+0.40 C
1938
19.2 C
+0.63 C
1939
19.1 C
+0.59 C
1940
17.7 C
-0.88 C
1941
19.0 C
+0.43 C
1942
18.5 C
-0.07 C
1943
19.0 C
+0.48 C
1944
19.3 C
+0.73 C
1945
19.2 C
+0.67 C
1946
19.2 C
+0.62 C
1947
18.5 C
-0.04 C
1949
19.4 C
+0.85 C
1950
19.3 C
+0.78 C
1951
19.5 C
+0.92 C
1952
19.1 C
+0.55 C
1953
19.6 C
+1.08 C
1954
19.8 C
+1.23 C
1956
19.3 C
+0.80 C
1957
19.1 C
+0.58 C
1958
17.2 C
-1.31 C
1959
17.5 C
-1.08 C
1960
17.1 C
-1.49 C
1961
17.2 C
-1.37 C
1962
17.9 C
-0.69 C
1963
17.4 C
-1.12 C
1964
17.3 C
-1.26 C
1965
18.0 C
-0.54 C
1966
17.2 C
-1.36 C
1967
17.7 C
-0.86 C
1968
17.3 C
-1.27 C
1969
17.8 C
-0.72 C
1970
17.7 C
-0.80 C
1971
18.4 C
-0.18 C
1972
18.5 C
+0.00 C
1973
18.4 C
-0.17 C
1974
18.1 C
-0.43 C
1975
18.2 C
-0.32 C
1976
17.0 C
-1.59 C
1977
17.9 C
-0.66 C
1978
17.3 C
-1.26 C
1979
17.0 C
-1.52 C
1980
17.9 C
-0.68 C
1981
17.7 C
-0.87 C
1982
18.4 C
-0.17 C
1983
17.1 C
-1.44 C
1984
18.0 C
-0.54 C
1985
18.0 C
-0.57 C
1986
18.4 C
-0.14 C
1987
17.6 C
-0.90 C
1988
17.6 C
-0.98 C
1989
17.6 C
-0.92 C
1990
19.0 C
+0.44 C
1991
19.0 C
+0.43 C
1992
18.2 C
-0.38 C
1993
18.1 C
-0.49 C
1994
18.7 C
+0.19 C
1995
18.7 C
+0.17 C
1996
17.7 C
-0.83 C
1997
17.7 C
-0.88 C
2003
18.3 C
-0.20 C
2006
19.1 C
+0.51 C
2007
19.1 C
+0.55 C
2008
18.9 C
+0.39 C
2009
19.2 C
+0.62 C
2010
18.7 C
+0.20 C
2011
19.5 C
+0.92 C
2012
20.1 C
+1.59 C
2013
20.1 C
+1.54 C
2014
20.0 C
+1.44 C
The fitted trend in annual mean temperature here over 1908 to 2014 is -0.05 C (-0.11 to 0.00) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.10 F (-0.20 to 0.01) per decade. The slope is a straight line fitted to 93 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Monticello
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.05 C (-0.11 to 0.00) per decade
-0.10 F (-0.20 to 0.01) per decade
1908 to 2014
93
Not clearly different from zero
Mean daily maximum
-0.07 C (-0.14 to -0.01) per decade
-0.13 F (-0.25 to -0.02) per decade
1908 to 2014
93
Fall
Mean daily minimum
-0.04 C (-0.10 to 0.03) per decade
-0.1 F (-0.2 to 0.1) per decade
1908 to 2014
93
Not clearly different from zero
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1907 to 2025
Yearly extremes at Monticello: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
1997
37.8 C (100.0 F)
111
Coldest night (TNn)
-16.1 C (3.0 F)
1940
-8.3 C (17.1 F)
111
Wettest day (Rx1day)
273.1 mm (10.8 in)
1974
92.7 mm (3.6 in)
119
Wettest five days (Rx5day)
369.7 mm (14.6 in)
1974
149.1 mm (5.9 in)
117
Longest dry spell (CDD)
62 days
1924
22 days
119
Hottest day (TXx)
The hottest day of the year at Monticello, 1907 to 2025. The record is 43.3 C (109.9 F) in 1997, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Monticello by year
Year
Hottest day (TXx)
1907
38.3 C (100.9 F)
1908
37.8 C (100.0 F)
1909
40.6 C (105.1 F)
1910
37.2 C (99.0 F)
1911
37.8 C (100.0 F)
1912
36.7 C (98.1 F)
1913
37.2 C (99.0 F)
1914
41.1 C (106.0 F)
1915
38.3 C (100.9 F)
1916
36.7 C (98.1 F)
1917
37.8 C (100.0 F)
1918
37.8 C (100.0 F)
1919
38.3 C (100.9 F)
1920
36.7 C (98.1 F)
1921
38.3 C (100.9 F)
1922
36.7 C (98.1 F)
1923
35.6 C (96.1 F)
1924
42.2 C (108.0 F)
1925
41.7 C (107.1 F)
1926
40.0 C (104.0 F)
1927
39.4 C (102.9 F)
1928
38.9 C (102.0 F)
1929
37.2 C (99.0 F)
1930
40.6 C (105.1 F)
1931
38.3 C (100.9 F)
1932
38.9 C (102.0 F)
1933
40.0 C (104.0 F)
1934
40.0 C (104.0 F)
1935
41.7 C (107.1 F)
1936
41.1 C (106.0 F)
1937
38.3 C (100.9 F)
1938
38.3 C (100.9 F)
1939
37.2 C (99.0 F)
1940
36.7 C (98.1 F)
1941
37.8 C (100.0 F)
1942
37.8 C (100.0 F)
1943
40.6 C (105.1 F)
1944
38.3 C (100.9 F)
1945
36.1 C (97.0 F)
1946
34.4 C (93.9 F)
1947
39.4 C (102.9 F)
1948
38.9 C (102.0 F)
1949
35.6 C (96.1 F)
1950
36.1 C (97.0 F)
1951
40.6 C (105.1 F)
1952
38.9 C (102.0 F)
1953
40.0 C (104.0 F)
1954
40.6 C (105.1 F)
1955
38.3 C (100.9 F)
1956
37.2 C (99.0 F)
1957
37.8 C (100.0 F)
1958
37.8 C (100.0 F)
1959
35.0 C (95.0 F)
1960
38.3 C (100.9 F)
1961
34.4 C (93.9 F)
1962
37.2 C (99.0 F)
1963
39.4 C (102.9 F)
1964
35.6 C (96.1 F)
1965
36.7 C (98.1 F)
1966
36.1 C (97.0 F)
1967
36.7 C (98.1 F)
1968
36.7 C (98.1 F)
1969
38.9 C (102.0 F)
1970
38.9 C (102.0 F)
1971
37.8 C (100.0 F)
1972
37.8 C (100.0 F)
1973
36.7 C (98.1 F)
1974
37.2 C (99.0 F)
1975
35.6 C (96.1 F)
1976
37.8 C (100.0 F)
1977
38.9 C (102.0 F)
1978
36.7 C (98.1 F)
1979
37.2 C (99.0 F)
1980
39.4 C (102.9 F)
1981
37.8 C (100.0 F)
1982
36.1 C (97.0 F)
1983
35.0 C (95.0 F)
1984
35.6 C (96.1 F)
1985
36.7 C (98.1 F)
1986
38.9 C (102.0 F)
1987
37.2 C (99.0 F)
1988
38.3 C (100.9 F)
1989
36.1 C (97.0 F)
1990
38.3 C (100.9 F)
1991
36.7 C (98.1 F)
1992
37.2 C (99.0 F)
1993
37.2 C (99.0 F)
1994
36.7 C (98.1 F)
1995
40.0 C (104.0 F)
1996
37.8 C (100.0 F)
1997
43.3 C (109.9 F)
1998
40.0 C (104.0 F)
1999
37.8 C (100.0 F)
2000
41.7 C (107.1 F)
2001
36.7 C (98.1 F)
2002
36.7 C (98.1 F)
2003
35.6 C (96.1 F)
2004
36.7 C (98.1 F)
2005
36.7 C (98.1 F)
2006
38.9 C (102.0 F)
2007
38.3 C (100.9 F)
2008
39.4 C (102.9 F)
2009
41.1 C (106.0 F)
2010
40.6 C (105.1 F)
2011
41.1 C (106.0 F)
2012
40.6 C (105.1 F)
2013
38.9 C (102.0 F)
2014
38.9 C (102.0 F)
2015
42.2 C (108.0 F)
2016
38.9 C (102.0 F)
2017
29.4 C (84.9 F)
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
n/a
2023
n/a
2024
n/a
2025
n/a
Coldest night (TNn)
The coldest night of the year at Monticello, 1907 to 2025. The record is -16.1 C (3.0 F) in 1940, marked on the chart; the median year is -8.3 C (17.1 F).
Coldest night (TNn) at Monticello by year
Year
Coldest night (TNn)
1907
-6.7 C (19.9 F)
1908
-7.2 C (19.0 F)
1909
-10.0 C (14.0 F)
1910
-8.9 C (16.0 F)
1911
-10.0 C (14.0 F)
1912
-8.3 C (17.1 F)
1913
-4.4 C (24.1 F)
1914
-8.9 C (16.0 F)
1915
-5.6 C (21.9 F)
1916
-8.9 C (16.0 F)
1917
-11.7 C (10.9 F)
1918
-13.3 C (8.1 F)
1919
-12.8 C (9.0 F)
1920
-7.2 C (19.0 F)
1921
-4.4 C (24.1 F)
1922
-6.7 C (19.9 F)
1923
-6.7 C (19.9 F)
1924
-11.7 C (10.9 F)
1925
-9.4 C (15.1 F)
1926
-6.7 C (19.9 F)
1927
-11.1 C (12.0 F)
1928
-9.4 C (15.1 F)
1929
-13.9 C (7.0 F)
1930
-8.9 C (16.0 F)
1931
-5.6 C (21.9 F)
1932
-7.2 C (19.0 F)
1933
-10.0 C (14.0 F)
1934
-8.9 C (16.0 F)
1935
-8.9 C (16.0 F)
1936
-8.3 C (17.1 F)
1937
-8.3 C (17.1 F)
1938
-8.9 C (16.0 F)
1939
-5.0 C (23.0 F)
1940
-16.1 C (3.0 F)
1941
-5.6 C (21.9 F)
1942
-9.4 C (15.1 F)
1943
-8.3 C (17.1 F)
1944
-7.8 C (18.0 F)
1945
-8.9 C (16.0 F)
1946
-8.3 C (17.1 F)
1947
-8.3 C (17.1 F)
1948
-13.9 C (7.0 F)
1949
-5.6 C (21.9 F)
1950
-7.8 C (18.0 F)
1951
-13.3 C (8.1 F)
1952
-6.1 C (21.0 F)
1953
-6.1 C (21.0 F)
1954
-6.1 C (21.0 F)
1955
-7.8 C (18.0 F)
1956
-6.7 C (19.9 F)
1957
-10.0 C (14.0 F)
1958
-10.0 C (14.0 F)
1959
-8.9 C (16.0 F)
1960
-11.7 C (10.9 F)
1961
-9.4 C (15.1 F)
1962
-15.0 C (5.0 F)
1963
-13.9 C (7.0 F)
1964
-11.1 C (12.0 F)
1965
-8.3 C (17.1 F)
1966
-12.8 C (9.0 F)
1967
-6.7 C (19.9 F)
1968
-7.8 C (18.0 F)
1969
-10.0 C (14.0 F)
1970
-11.7 C (10.9 F)
1971
-9.4 C (15.1 F)
1972
-8.3 C (17.1 F)
1973
-8.3 C (17.1 F)
1974
-7.2 C (19.0 F)
1975
-8.9 C (16.0 F)
1976
-9.4 C (15.1 F)
1977
-11.7 C (10.9 F)
1978
-8.9 C (16.0 F)
1979
-10.6 C (12.9 F)
1980
-10.0 C (14.0 F)
1981
-10.0 C (14.0 F)
1982
-15.0 C (5.0 F)
1983
-12.8 C (9.0 F)
1984
-11.1 C (12.0 F)
1985
-15.0 C (5.0 F)
1986
-7.2 C (19.0 F)
1987
-5.6 C (21.9 F)
1988
-8.3 C (17.1 F)
1989
-14.4 C (6.1 F)
1990
-5.6 C (21.9 F)
1991
-6.7 C (19.9 F)
1992
-5.6 C (21.9 F)
1993
-6.1 C (21.0 F)
1994
-7.2 C (19.0 F)
1995
-7.8 C (18.0 F)
1996
-12.2 C (10.0 F)
1997
-11.7 C (10.9 F)
1998
-7.2 C (19.0 F)
1999
-10.6 C (12.9 F)
2000
-8.3 C (17.1 F)
2001
-10.6 C (12.9 F)
2002
-7.8 C (18.0 F)
2003
-11.7 C (10.9 F)
2004
-6.1 C (21.0 F)
2005
-3.3 C (26.1 F)
2006
-6.7 C (19.9 F)
2007
-6.7 C (19.9 F)
2008
-7.2 C (19.0 F)
2009
-6.7 C (19.9 F)
2010
-10.6 C (12.9 F)
2011
-7.8 C (18.0 F)
2012
-5.0 C (23.0 F)
2013
-2.8 C (27.0 F)
2014
-5.0 C (23.0 F)
2015
-7.2 C (19.0 F)
2016
-3.9 C (25.0 F)
2017
-7.2 C (19.0 F)
2018
n/a
2019
n/a
2020
n/a
2021
n/a
2022
n/a
2023
n/a
2024
n/a
2025
n/a
Wettest day (Rx1day)
The wettest day of the year at Monticello, 1907 to 2025. The record is 273.1 mm (10.8 in) in 1974, marked on the chart; the median year is 92.7 mm (3.6 in).
Wettest day (Rx1day) at Monticello by year
Year
Wettest day (Rx1day)
1907
76.5 mm (3.0 in)
1908
86.9 mm (3.4 in)
1909
88.9 mm (3.5 in)
1910
135.9 mm (5.4 in)
1911
62.2 mm (2.4 in)
1912
108.0 mm (4.3 in)
1913
92.5 mm (3.6 in)
1914
77.0 mm (3.0 in)
1915
116.8 mm (4.6 in)
1916
106.7 mm (4.2 in)
1917
66.8 mm (2.6 in)
1918
63.5 mm (2.5 in)
1919
92.7 mm (3.6 in)
1920
176.5 mm (6.9 in)
1921
77.2 mm (3.0 in)
1922
75.7 mm (3.0 in)
1923
152.4 mm (6.0 in)
1924
50.3 mm (2.0 in)
1925
118.9 mm (4.7 in)
1926
117.3 mm (4.6 in)
1927
85.1 mm (3.4 in)
1928
154.9 mm (6.1 in)
1929
165.9 mm (6.5 in)
1930
117.6 mm (4.6 in)
1931
56.4 mm (2.2 in)
1932
108.0 mm (4.3 in)
1933
104.1 mm (4.1 in)
1934
85.6 mm (3.4 in)
1935
87.6 mm (3.4 in)
1936
65.3 mm (2.6 in)
1937
132.1 mm (5.2 in)
1938
88.4 mm (3.5 in)
1939
92.7 mm (3.6 in)
1940
101.6 mm (4.0 in)
1941
146.1 mm (5.8 in)
1942
77.7 mm (3.1 in)
1943
118.6 mm (4.7 in)
1944
71.1 mm (2.8 in)
1945
85.1 mm (3.4 in)
1946
104.1 mm (4.1 in)
1947
95.3 mm (3.8 in)
1948
93.5 mm (3.7 in)
1949
100.3 mm (3.9 in)
1950
134.6 mm (5.3 in)
1951
84.6 mm (3.3 in)
1952
61.0 mm (2.4 in)
1953
92.7 mm (3.6 in)
1954
56.9 mm (2.2 in)
1955
115.6 mm (4.6 in)
1956
142.2 mm (5.6 in)
1957
109.2 mm (4.3 in)
1958
90.2 mm (3.6 in)
1959
58.7 mm (2.3 in)
1960
64.0 mm (2.5 in)
1961
147.3 mm (5.8 in)
1962
90.7 mm (3.6 in)
1963
78.7 mm (3.1 in)
1964
127.5 mm (5.0 in)
1965
68.8 mm (2.7 in)
1966
81.3 mm (3.2 in)
1967
118.4 mm (4.7 in)
1968
64.0 mm (2.5 in)
1969
70.1 mm (2.8 in)
1970
85.1 mm (3.4 in)
1971
95.8 mm (3.8 in)
1972
133.4 mm (5.3 in)
1973
132.1 mm (5.2 in)
1974
273.1 mm (10.8 in)
1975
104.4 mm (4.1 in)
1976
105.4 mm (4.1 in)
1977
88.1 mm (3.5 in)
1978
97.8 mm (3.9 in)
1979
106.7 mm (4.2 in)
1980
135.6 mm (5.3 in)
1981
85.6 mm (3.4 in)
1982
205.7 mm (8.1 in)
1983
204.2 mm (8.0 in)
1984
64.8 mm (2.6 in)
1985
85.1 mm (3.4 in)
1986
95.8 mm (3.8 in)
1987
106.7 mm (4.2 in)
1988
82.3 mm (3.2 in)
1989
117.6 mm (4.6 in)
1990
200.7 mm (7.9 in)
1991
85.1 mm (3.4 in)
1992
157.0 mm (6.2 in)
1993
133.6 mm (5.3 in)
1994
158.8 mm (6.3 in)
1995
136.7 mm (5.4 in)
1996
58.2 mm (2.3 in)
1997
85.9 mm (3.4 in)
1998
90.4 mm (3.6 in)
1999
118.6 mm (4.7 in)
2000
61.5 mm (2.4 in)
2001
75.9 mm (3.0 in)
2002
86.9 mm (3.4 in)
2003
106.7 mm (4.2 in)
2004
108.2 mm (4.3 in)
2005
82.6 mm (3.3 in)
2006
137.2 mm (5.4 in)
2007
107.2 mm (4.2 in)
2008
71.1 mm (2.8 in)
2009
142.2 mm (5.6 in)
2010
54.6 mm (2.1 in)
2011
121.9 mm (4.8 in)
2012
195.1 mm (7.7 in)
2013
95.3 mm (3.8 in)
2014
63.5 mm (2.5 in)
2015
77.7 mm (3.1 in)
2016
58.4 mm (2.3 in)
2017
90.4 mm (3.6 in)
2018
99.1 mm (3.9 in)
2019
48.3 mm (1.9 in)
2020
158.8 mm (6.3 in)
2021
83.8 mm (3.3 in)
2022
72.4 mm (2.9 in)
2023
89.2 mm (3.5 in)
2024
55.9 mm (2.2 in)
2025
101.6 mm (4.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Monticello, 1907 to 2025. The record is 369.7 mm (14.6 in) in 1974, marked on the chart; the median year is 149.1 mm (5.9 in).
Wettest five days (Rx5day) at Monticello by year
Year
Wettest five days (Rx5day)
1907
99.6 mm (3.9 in)
1908
154.5 mm (6.1 in)
1909
119.2 mm (4.7 in)
1910
191.4 mm (7.5 in)
1911
95.0 mm (3.7 in)
1912
194.7 mm (7.7 in)
1913
161.9 mm (6.4 in)
1914
103.6 mm (4.1 in)
1915
164.6 mm (6.5 in)
1916
156.7 mm (6.2 in)
1917
95.0 mm (3.7 in)
1918
92.3 mm (3.6 in)
1919
255.0 mm (10.0 in)
1920
222.2 mm (8.7 in)
1921
148.3 mm (5.8 in)
1922
117.7 mm (4.6 in)
1923
165.6 mm (6.5 in)
1924
70.1 mm (2.8 in)
1925
271.5 mm (10.7 in)
1926
149.1 mm (5.9 in)
1927
165.1 mm (6.5 in)
1928
136.6 mm (5.4 in)
1929
335.0 mm (13.2 in)
1930
151.5 mm (6.0 in)
1931
85.4 mm (3.4 in)
1932
121.5 mm (4.8 in)
1933
141.4 mm (5.6 in)
1934
127.8 mm (5.0 in)
1935
178.5 mm (7.0 in)
1936
110.6 mm (4.4 in)
1937
192.8 mm (7.6 in)
1938
195.4 mm (7.7 in)
1939
153.2 mm (6.0 in)
1940
227.3 mm (8.9 in)
1941
158.3 mm (6.2 in)
1942
137.0 mm (5.4 in)
1943
230.3 mm (9.1 in)
1944
119.2 mm (4.7 in)
1945
125.2 mm (4.9 in)
1946
148.1 mm (5.8 in)
1947
124.2 mm (4.9 in)
1948
177.3 mm (7.0 in)
1949
150.1 mm (5.9 in)
1950
175.2 mm (6.9 in)
1951
149.9 mm (5.9 in)
1952
123.2 mm (4.9 in)
1953
177.8 mm (7.0 in)
1954
86.6 mm (3.4 in)
1955
192.5 mm (7.6 in)
1956
206.4 mm (8.1 in)
1957
109.2 mm (4.3 in)
1958
176.5 mm (6.9 in)
1959
123.2 mm (4.9 in)
1960
110.7 mm (4.4 in)
1961
274.9 mm (10.8 in)
1962
101.4 mm (4.0 in)
1963
95.0 mm (3.7 in)
1964
184.2 mm (7.3 in)
1965
111.2 mm (4.4 in)
1966
132.1 mm (5.2 in)
1967
153.0 mm (6.0 in)
1968
86.4 mm (3.4 in)
1969
122.6 mm (4.8 in)
1970
93.8 mm (3.7 in)
1971
201.5 mm (7.9 in)
1972
150.6 mm (5.9 in)
1973
148.6 mm (5.9 in)
1974
369.7 mm (14.6 in)
1975
202.2 mm (8.0 in)
1976
149.3 mm (5.9 in)
1977
148.1 mm (5.8 in)
1978
136.9 mm (5.4 in)
1979
145.3 mm (5.7 in)
1980
206.7 mm (8.1 in)
1981
118.1 mm (4.6 in)
1982
233.4 mm (9.2 in)
1983
312.2 mm (12.3 in)
1984
116.2 mm (4.6 in)
1985
115.2 mm (4.5 in)
1986
97.8 mm (3.9 in)
1987
178.0 mm (7.0 in)
1988
136.4 mm (5.4 in)
1989
176.7 mm (7.0 in)
1990
239.6 mm (9.4 in)
1991
178.3 mm (7.0 in)
1992
198.4 mm (7.8 in)
1993
191.7 mm (7.5 in)
1994
186.0 mm (7.3 in)
1995
170.4 mm (6.7 in)
1996
87.1 mm (3.4 in)
1997
157.1 mm (6.2 in)
1998
139.8 mm (5.5 in)
1999
123.4 mm (4.9 in)
2000
105.7 mm (4.2 in)
2001
160.2 mm (6.3 in)
2002
192.6 mm (7.6 in)
2003
183.9 mm (7.2 in)
2004
172.8 mm (6.8 in)
2005
102.1 mm (4.0 in)
2006
181.4 mm (7.1 in)
2007
131.8 mm (5.2 in)
2008
125.8 mm (5.0 in)
2009
196.8 mm (7.7 in)
2010
78.0 mm (3.1 in)
2011
167.4 mm (6.6 in)
2012
271.3 mm (10.7 in)
2013
159.3 mm (6.3 in)
2014
134.6 mm (5.3 in)
2015
80.3 mm (3.2 in)
2016
99.0 mm (3.9 in)
2017
131.1 mm (5.2 in)
2018
99.1 mm (3.9 in)
2019
51.1 mm (2.0 in)
2020
158.8 mm (6.3 in)
2021
n/a
2022
137.8 mm (5.4 in)
2023
66.0 mm (2.6 in)
2024
39.6 mm (1.6 in)
2025
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Monticello, 1907 to 2025. The record is 62 days in 1924, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Monticello by year
Year
Longest dry spell (CDD)
1907
29 days
1908
27 days
1909
22 days
1910
21 days
1911
27 days
1912
13 days
1913
35 days
1914
25 days
1915
26 days
1916
34 days
1917
29 days
1918
28 days
1919
14 days
1920
28 days
1921
24 days
1922
16 days
1923
32 days
1924
62 days
1925
27 days
1926
14 days
1927
24 days
1928
16 days
1929
14 days
1930
24 days
1931
21 days
1932
18 days
1933
19 days
1934
22 days
1935
31 days
1936
30 days
1937
24 days
1938
20 days
1939
23 days
1940
23 days
1941
22 days
1942
26 days
1943
25 days
1944
33 days
1945
11 days
1946
26 days
1947
27 days
1948
20 days
1949
26 days
1950
21 days
1951
40 days
1952
32 days
1953
38 days
1954
19 days
1955
36 days
1956
20 days
1957
21 days
1958
25 days
1959
10 days
1960
13 days
1961
25 days
1962
28 days
1963
34 days
1964
22 days
1965
29 days
1966
20 days
1967
28 days
1968
27 days
1969
23 days
1970
20 days
1971
19 days
1972
33 days
1973
15 days
1974
17 days
1975
14 days
1976
29 days
1977
13 days
1978
33 days
1979
17 days
1980
27 days
1981
22 days
1982
20 days
1983
18 days
1984
25 days
1985
15 days
1986
25 days
1987
24 days
1988
32 days
1989
20 days
1990
19 days
1991
28 days
1992
21 days
1993
16 days
1994
15 days
1995
21 days
1996
18 days
1997
18 days
1998
22 days
1999
21 days
2000
27 days
2001
41 days
2002
24 days
2003
33 days
2004
23 days
2005
48 days
2006
21 days
2007
24 days
2008
14 days
2009
30 days
2010
37 days
2011
22 days
2012
21 days
2013
13 days
2014
22 days
2015
17 days
2016
41 days
2017
20 days
2018
14 days
2019
5 days
2020
12 days
2021
1 day
2022
9 days
2023
10 days
2024
17 days
2025
1 day
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
93 years with a frost
Across 93 years with a frost, the median last spring frost at Monticello falls on 22 March and the median first autumn frost on 4 November, which leaves a median of 228 days between them.
In 1978 to 2014 the median growing season was 240 days. That is 20 days more than in 1908 to 1942.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
Frost dates and growing season at Monticello
Measure
Median, all years
Earliest period (1908 to 1942)
Recent period (1978 to 2014)
Recent against earliest
Fitted trend
Last spring frost
22 March
21 March
20 March
1 day earlier
-0.4 days per decade
First autumn frost
4 November
30 October
13 November
14 days later
+1.2 days per decade
Growing days
228 days
220 days
240 days
20 days more
+1.5 days per decade
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
100 years, 1908 to 2015
A day with at least 96.9 mm (3.8 in) of rain is expected about once in 2 years. A day with at least 230.6 mm (9.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Monticello: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
96.9 mm (3.8 in)
5 years
128.7 mm (5.1 in)
10 years
151.3 mm (6.0 in)
25 years
181.6 mm (7.1 in)
50 years
205.6 mm (8.1 in)
100 years
230.6 mm (9.1 in)
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 100 years of values from 1908 to 2015.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 273.1 mm (10.8 in) in 1974; 205.7 mm (8.1 in) in 1982; 204.2 mm (8.0 in) in 1983.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Monticello, at 1958. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1958 ran 0.4 C (0.7 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Monticello, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1958
-0.4
-0.7
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Monticello standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Monticello threshold days by year: CSV or JSON. Field meanings are on the data page.
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-16 (16 October 2026). Records are computed by this site and are not official.