Record envelope, standing records and threshold days for Monticello 2E (USC00425805), Utah, United States, with 110 years of record.
Key Facts for Monticello 2E
Monticello 2E (USC00425805) is a weather station in Utah, United States at 37.87 latitude and -109.31 longitude, 2,079 m (6,820 ft) above sea level.
The station reports from 1902 to 2011, 110 years of record.
1,464 records set at Monticello 2E still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Monticello 2E set a daily record high minimum temperature of 1.1 C (34.0 F) on 17 February 2011.
About the Station
Location: Utah, United States, 37.87 latitude, -109.31 longitude.
Elevation: 2,079 m (6,820 ft).
Period of record: 1902 to 2011, 110 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 2E. 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 2E, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
13.9 C (57.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-29.4 C (-20.9 F)
n/a
n/a
Mar
27.2 C (81.0 F)
-22.8 C (-9.0 F)
n/a
n/a
Apr
26.7 C (80.1 F)
-15.6 C (3.9 F)
n/a
n/a
May
32.8 C (91.0 F)
-12.2 C (10.0 F)
n/a
n/a
Jun
36.1 C (97.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
36.1 C (97.0 F)
0.6 C (33.1 F)
n/a
n/a
Aug
38.3 C (100.9 F)
-3.9 C (25.0 F)
n/a
n/a
Sep
32.8 C (91.0 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
30.0 C (86.0 F)
-15.0 C (5.0 F)
n/a
n/a
Nov
21.1 C (70.0 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
20.6 C (69.1 F)
-30.0 C (-22.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Monticello 2E still stand. 1903 holds the most, with 69.
Standing records at Monticello 2E by the year they were set
Year set
Standing records
1902
28
1903
69
1904
60
1911
15
1912
17
1913
19
1914
9
1915
13
1916
14
1917
24
1918
13
1919
15
1920
15
1921
12
1927
5
1928
12
1929
20
1930
14
1931
26
1932
13
1933
25
1934
37
1935
15
1936
21
1937
28
1938
15
1939
7
1940
12
1941
9
1942
10
1943
13
1944
6
1945
10
1946
11
1947
15
1948
19
1949
12
1950
20
1951
4
1952
7
1953
10
1954
15
1955
13
1956
17
1957
11
1958
4
1959
11
1960
7
1961
7
1962
9
1963
10
1964
5
1965
10
1966
10
1967
12
1968
16
1969
15
1970
16
1971
27
1972
9
1973
7
1974
14
1975
24
1976
10
1977
9
1978
13
1979
22
1980
14
1981
11
1982
14
1983
15
1984
18
1985
21
1986
21
1987
4
1988
5
1989
21
1990
30
1991
11
1992
10
1993
4
1994
9
1995
10
1996
26
1997
10
1998
11
1999
9
2000
22
2001
13
2002
7
2003
18
2004
15
2005
13
2006
12
2007
15
2008
6
2009
11
2010
12
2011
4
All-Time Record Progression
5 new records
5 all-time records were set at Monticello 2E between 7 August 1969 and 22 December 1990. Each dot is a new record.
When Monticello 2E set new all-time records
Date
Kind
Detail
1969-08-07
Record high maximum temperature
Record high maximum temperature 37.2 C (99.0 F)
1969-08-08
Record high maximum temperature
Record high maximum temperature 38.3 C (100.9 F)
1978-12-08
Record low maximum temperature
Record low maximum temperature -15.6 C (3.9 F)
1989-02-06
Record low maximum temperature
Record low maximum temperature -17.2 C (1.0 F)
1990-12-22
Record low minimum temperature
Record low minimum temperature -30.0 C (-22.0 F)
Wettest Day of Each Month
Oct: 104.1 mm (4.1 in)
The wettest day on record for each calendar month at Monticello 2E. The most was 104.1 mm (4.1 in) on 5 October 1911.
Record daily precipitation for each month at Monticello 2E
Month
Record daily precipitation (mm)
Date
Jan
61.0 mm (2.4 in)
13 January 1997
Feb
48.0 mm (1.9 in)
8 February 1994
Mar
76.2 mm (3.0 in)
12 March 1918
Apr
38.1 mm (1.5 in)
17 April 1917
May
63.5 mm (2.5 in)
23 May 1921
Jun
40.4 mm (1.6 in)
17 June 1995
Jul
53.1 mm (2.1 in)
31 July 1956
Aug
85.9 mm (3.4 in)
1 August 1968
Sep
50.8 mm (2.0 in)
9 September 1927
Oct
104.1 mm (4.1 in)
5 October 1911
Nov
45.7 mm (1.8 in)
11 November 1902
Dec
61.0 mm (2.4 in)
18 December 1978
Period of Record Coverage
1902 to 2011
Complete yearUnder 90 percent of days
99 years of record at Monticello 2E, 1902 to 2011. 15 years have data for under 90 percent of days and are left out of rankings: 1902, 1904, 1911, 1912, 1913, 1914, 1915, 1918 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 83 complete years at Monticello 2E, 1903 to 2010. Blue stripes are years cooler than the station's own mean of 7.9 C (46.3 F); red stripes are warmer. The coolest year was 1968, at 6.4 C (43.5 F), and the warmest was 1934, at 10.5 C (50.8 F). The strongest colour marks a difference of 2.6 C (4.7 F).
Annual mean temperature at Monticello 2E as warming stripes, 1903 to 2010
Year
Annual mean temperature
Difference from the station mean
1903
8.5 C
+0.57 C
1916
7.0 C
-0.98 C
1917
6.8 C
-1.18 C
1928
8.1 C
+0.12 C
1929
7.1 C
-0.80 C
1930
7.6 C
-0.30 C
1931
8.4 C
+0.48 C
1932
7.4 C
-0.52 C
1933
8.2 C
+0.28 C
1934
10.5 C
+2.53 C
1935
8.5 C
+0.60 C
1936
9.3 C
+1.36 C
1937
8.1 C
+0.20 C
1938
8.3 C
+0.39 C
1939
8.1 C
+0.13 C
1940
8.3 C
+0.36 C
1941
7.4 C
-0.50 C
1942
7.8 C
-0.10 C
1943
8.7 C
+0.79 C
1944
7.5 C
-0.46 C
1945
7.6 C
-0.29 C
1946
8.4 C
+0.51 C
1947
8.2 C
+0.30 C
1948
7.7 C
-0.28 C
1949
7.0 C
-0.95 C
1950
9.0 C
+1.07 C
1952
7.9 C
+0.00 C
1953
8.8 C
+0.89 C
1954
9.2 C
+1.25 C
1955
7.3 C
-0.65 C
1956
8.3 C
+0.34 C
1957
7.4 C
-0.57 C
1958
8.8 C
+0.82 C
1959
8.5 C
+0.55 C
1960
8.0 C
+0.02 C
1961
7.6 C
-0.30 C
1962
8.4 C
+0.46 C
1963
8.4 C
+0.43 C
1964
7.2 C
-0.71 C
1965
8.2 C
+0.25 C
1966
7.9 C
+0.01 C
1967
7.3 C
-0.59 C
1968
6.4 C
-1.54 C
1969
7.7 C
-0.25 C
1970
8.0 C
+0.08 C
1971
7.8 C
-0.10 C
1972
7.9 C
-0.01 C
1973
6.5 C
-1.39 C
1974
7.3 C
-0.59 C
1975
6.5 C
-1.48 C
1976
7.6 C
-0.37 C
1977
8.3 C
+0.35 C
1978
7.6 C
-0.29 C
1979
6.5 C
-1.44 C
1980
7.9 C
-0.03 C
1981
8.7 C
+0.74 C
1982
7.1 C
-0.85 C
1983
7.4 C
-0.58 C
1984
7.1 C
-0.81 C
1985
7.4 C
-0.52 C
1986
8.4 C
+0.50 C
1987
7.3 C
-0.67 C
1988
7.4 C
-0.57 C
1989
8.2 C
+0.29 C
1990
7.9 C
-0.08 C
1991
7.2 C
-0.78 C
1992
7.4 C
-0.56 C
1993
7.4 C
-0.53 C
1994
8.4 C
+0.44 C
1995
8.4 C
+0.49 C
1996
8.8 C
+0.88 C
1997
7.4 C
-0.50 C
1998
8.1 C
+0.12 C
1999
8.5 C
+0.56 C
2000
9.0 C
+1.09 C
2001
8.8 C
+0.83 C
2003
9.1 C
+1.12 C
2004
7.7 C
-0.23 C
2005
8.5 C
+0.60 C
2006
8.2 C
+0.30 C
2007
8.5 C
+0.57 C
2009
7.7 C
-0.21 C
2010
7.5 C
-0.44 C
The fitted trend in annual mean temperature here over 1903 to 2010 is -0.01 C (-0.07 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.13 to 0.09) per decade. The slope is a straight line fitted to 83 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Monticello 2E
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.01 C (-0.07 to 0.05) per decade
-0.02 F (-0.13 to 0.09) per decade
1903 to 2010
83
Not clearly different from zero
Mean daily maximum
0.05 C (-0.02 to 0.12) per decade
0.09 F (-0.04 to 0.22) per decade
1903 to 2010
83
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.1 to 0.0) per decade
-0.1 F (-0.3 to 0.0) per decade
1903 to 2010
83
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
1902 to 2011
Yearly extremes at Monticello 2E: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
38.3 C (100.9 F)
1969
33.3 C (91.9 F)
99
Coldest night (TNn)
-30.0 C (-22.0 F)
1990
-21.1 C (-6.0 F)
99
Wettest day (Rx1day)
104.1 mm (4.1 in)
1911
35.6 mm (1.4 in)
99
Wettest five days (Rx5day)
118.1 mm (4.6 in)
1918
51.6 mm (2.0 in)
99
Longest dry spell (CDD)
102 days
1972
36 days
99
Hottest day (TXx)
The hottest day of the year at Monticello 2E, 1902 to 2011. The record is 38.3 C (100.9 F) in 1969, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Monticello 2E by year
Year
Hottest day (TXx)
1902
36.7 C (98.1 F)
1903
32.2 C (90.0 F)
1904
36.1 C (97.0 F)
1911
28.9 C (84.0 F)
1912
35.0 C (95.0 F)
1913
30.6 C (87.1 F)
1914
30.0 C (86.0 F)
1915
30.6 C (87.1 F)
1916
28.9 C (84.0 F)
1917
30.6 C (87.1 F)
1918
32.2 C (90.0 F)
1919
32.2 C (90.0 F)
1920
29.4 C (84.9 F)
1921
31.7 C (89.1 F)
1927
28.9 C (84.0 F)
1928
31.1 C (88.0 F)
1929
31.7 C (89.1 F)
1930
32.8 C (91.0 F)
1931
35.6 C (96.1 F)
1932
32.2 C (90.0 F)
1933
32.8 C (91.0 F)
1934
34.4 C (93.9 F)
1935
32.8 C (91.0 F)
1936
34.4 C (93.9 F)
1937
33.9 C (93.0 F)
1938
34.4 C (93.9 F)
1939
33.9 C (93.0 F)
1940
33.9 C (93.0 F)
1941
31.1 C (88.0 F)
1942
32.8 C (91.0 F)
1943
33.3 C (91.9 F)
1944
31.1 C (88.0 F)
1945
32.2 C (90.0 F)
1946
32.8 C (91.0 F)
1947
34.4 C (93.9 F)
1948
32.8 C (91.0 F)
1949
32.8 C (91.0 F)
1950
36.1 C (97.0 F)
1951
20.0 C (68.0 F)
1952
31.1 C (88.0 F)
1953
32.2 C (90.0 F)
1954
33.9 C (93.0 F)
1955
33.3 C (91.9 F)
1956
32.8 C (91.0 F)
1957
31.7 C (89.1 F)
1958
32.8 C (91.0 F)
1959
33.3 C (91.9 F)
1960
32.8 C (91.0 F)
1961
33.3 C (91.9 F)
1962
33.3 C (91.9 F)
1963
33.9 C (93.0 F)
1964
32.2 C (90.0 F)
1965
31.7 C (89.1 F)
1966
32.2 C (90.0 F)
1967
32.2 C (90.0 F)
1968
32.8 C (91.0 F)
1969
38.3 C (100.9 F)
1970
33.9 C (93.0 F)
1971
34.4 C (93.9 F)
1972
35.0 C (95.0 F)
1973
33.3 C (91.9 F)
1974
33.9 C (93.0 F)
1975
32.8 C (91.0 F)
1976
33.3 C (91.9 F)
1977
32.2 C (90.0 F)
1978
34.4 C (93.9 F)
1979
33.9 C (93.0 F)
1980
33.9 C (93.0 F)
1981
33.9 C (93.0 F)
1982
33.9 C (93.0 F)
1983
31.7 C (89.1 F)
1984
32.8 C (91.0 F)
1985
33.9 C (93.0 F)
1986
32.2 C (90.0 F)
1987
32.2 C (90.0 F)
1988
33.3 C (91.9 F)
1989
35.6 C (96.1 F)
1990
34.4 C (93.9 F)
1991
31.7 C (89.1 F)
1992
31.1 C (88.0 F)
1993
31.7 C (89.1 F)
1994
34.4 C (93.9 F)
1995
33.9 C (93.0 F)
1996
33.9 C (93.0 F)
1997
33.3 C (91.9 F)
1998
35.0 C (95.0 F)
1999
33.3 C (91.9 F)
2000
36.1 C (97.0 F)
2001
34.4 C (93.9 F)
2002
33.9 C (93.0 F)
2003
35.0 C (95.0 F)
2004
33.3 C (91.9 F)
2005
35.6 C (96.1 F)
2006
34.4 C (93.9 F)
2007
34.4 C (93.9 F)
2008
33.3 C (91.9 F)
2009
33.3 C (91.9 F)
2010
33.9 C (93.0 F)
2011
16.1 C (61.0 F)
Coldest night (TNn)
The coldest night of the year at Monticello 2E, 1902 to 2011. The record is -30.0 C (-22.0 F) in 1990, marked on the chart; the median year is -21.1 C (-6.0 F).
Coldest night (TNn) at Monticello 2E by year
Year
Coldest night (TNn)
1902
-15.0 C (5.0 F)
1903
-23.3 C (-9.9 F)
1904
-17.8 C (0.0 F)
1911
-18.9 C (-2.0 F)
1912
-19.4 C (-2.9 F)
1913
-21.7 C (-7.1 F)
1914
-17.8 C (0.0 F)
1915
-16.7 C (1.9 F)
1916
-23.9 C (-11.0 F)
1917
-23.3 C (-9.9 F)
1918
-17.8 C (0.0 F)
1919
-25.6 C (-14.1 F)
1920
-16.1 C (3.0 F)
1921
-7.8 C (18.0 F)
1927
-18.9 C (-2.0 F)
1928
-17.2 C (1.0 F)
1929
-21.7 C (-7.1 F)
1930
-21.1 C (-6.0 F)
1931
-21.1 C (-6.0 F)
1932
-22.8 C (-9.0 F)
1933
-29.4 C (-20.9 F)
1934
-13.3 C (8.1 F)
1935
-21.1 C (-6.0 F)
1936
-17.8 C (0.0 F)
1937
-25.6 C (-14.1 F)
1938
-15.0 C (5.0 F)
1939
-21.7 C (-7.1 F)
1940
-21.1 C (-6.0 F)
1941
-17.8 C (0.0 F)
1942
-23.3 C (-9.9 F)
1943
-23.9 C (-11.0 F)
1944
-17.2 C (1.0 F)
1945
-20.6 C (-5.1 F)
1946
-19.4 C (-2.9 F)
1947
-18.3 C (-0.9 F)
1948
-22.2 C (-8.0 F)
1949
-24.4 C (-11.9 F)
1950
-24.4 C (-11.9 F)
1951
-21.7 C (-7.1 F)
1952
-22.2 C (-8.0 F)
1953
-16.7 C (1.9 F)
1954
-18.9 C (-2.0 F)
1955
-21.1 C (-6.0 F)
1956
-17.8 C (0.0 F)
1957
-16.7 C (1.9 F)
1958
-17.2 C (1.0 F)
1959
-18.9 C (-2.0 F)
1960
-23.3 C (-9.9 F)
1961
-25.0 C (-13.0 F)
1962
-22.2 C (-8.0 F)
1963
-26.1 C (-15.0 F)
1964
-19.4 C (-2.9 F)
1965
-18.9 C (-2.0 F)
1966
-21.7 C (-7.1 F)
1967
-22.2 C (-8.0 F)
1968
-21.7 C (-7.1 F)
1969
-19.4 C (-2.9 F)
1970
-16.7 C (1.9 F)
1971
-26.7 C (-16.1 F)
1972
-22.8 C (-9.0 F)
1973
-23.9 C (-11.0 F)
1974
-26.7 C (-16.1 F)
1975
-21.1 C (-6.0 F)
1976
-25.6 C (-14.1 F)
1977
-23.3 C (-9.9 F)
1978
-29.4 C (-20.9 F)
1979
-27.8 C (-18.0 F)
1980
-18.9 C (-2.0 F)
1981
-17.8 C (0.0 F)
1982
-25.0 C (-13.0 F)
1983
-21.7 C (-7.1 F)
1984
-27.2 C (-17.0 F)
1985
-28.3 C (-18.9 F)
1986
-20.0 C (-4.0 F)
1987
-19.4 C (-2.9 F)
1988
-22.2 C (-8.0 F)
1989
-28.3 C (-18.9 F)
1990
-30.0 C (-22.0 F)
1991
-20.6 C (-5.1 F)
1992
-22.8 C (-9.0 F)
1993
-21.1 C (-6.0 F)
1994
-21.7 C (-7.1 F)
1995
-17.8 C (0.0 F)
1996
-19.4 C (-2.9 F)
1997
-22.8 C (-9.0 F)
1998
-20.6 C (-5.1 F)
1999
-18.9 C (-2.0 F)
2000
-18.3 C (-0.9 F)
2001
-18.3 C (-0.9 F)
2002
-20.0 C (-4.0 F)
2003
-19.4 C (-2.9 F)
2004
-22.8 C (-9.0 F)
2005
-24.4 C (-11.9 F)
2006
-17.8 C (0.0 F)
2007
-23.3 C (-9.9 F)
2008
-24.4 C (-11.9 F)
2009
-24.4 C (-11.9 F)
2010
-18.9 C (-2.0 F)
2011
-23.9 C (-11.0 F)
Wettest day (Rx1day)
The wettest day of the year at Monticello 2E, 1902 to 2011. The record is 104.1 mm (4.1 in) in 1911, marked on the chart; the median year is 35.6 mm (1.4 in).
Wettest day (Rx1day) at Monticello 2E by year
Year
Wettest day (Rx1day)
1902
45.7 mm (1.8 in)
1903
19.1 mm (0.8 in)
1904
50.8 mm (2.0 in)
1911
104.1 mm (4.1 in)
1912
55.9 mm (2.2 in)
1913
38.1 mm (1.5 in)
1914
35.6 mm (1.4 in)
1915
38.1 mm (1.5 in)
1916
44.5 mm (1.8 in)
1917
38.1 mm (1.5 in)
1918
76.2 mm (3.0 in)
1919
25.4 mm (1.0 in)
1920
38.1 mm (1.5 in)
1921
63.5 mm (2.5 in)
1927
50.8 mm (2.0 in)
1928
41.4 mm (1.6 in)
1929
24.1 mm (0.9 in)
1930
31.8 mm (1.3 in)
1931
30.0 mm (1.2 in)
1932
37.6 mm (1.5 in)
1933
36.1 mm (1.4 in)
1934
20.3 mm (0.8 in)
1935
37.1 mm (1.5 in)
1936
26.2 mm (1.0 in)
1937
36.1 mm (1.4 in)
1938
30.5 mm (1.2 in)
1939
24.1 mm (0.9 in)
1940
46.5 mm (1.8 in)
1941
50.0 mm (2.0 in)
1942
22.9 mm (0.9 in)
1943
21.6 mm (0.9 in)
1944
19.1 mm (0.8 in)
1945
26.9 mm (1.1 in)
1946
34.5 mm (1.4 in)
1947
47.0 mm (1.9 in)
1948
33.3 mm (1.3 in)
1949
51.3 mm (2.0 in)
1950
11.4 mm (0.4 in)
1951
39.4 mm (1.6 in)
1952
31.5 mm (1.2 in)
1953
33.0 mm (1.3 in)
1954
24.1 mm (0.9 in)
1955
50.8 mm (2.0 in)
1956
53.1 mm (2.1 in)
1957
32.8 mm (1.3 in)
1958
24.6 mm (1.0 in)
1959
28.7 mm (1.1 in)
1960
28.4 mm (1.1 in)
1961
27.7 mm (1.1 in)
1962
49.0 mm (1.9 in)
1963
18.3 mm (0.7 in)
1964
21.1 mm (0.8 in)
1965
28.7 mm (1.1 in)
1966
26.4 mm (1.0 in)
1967
20.8 mm (0.8 in)
1968
85.9 mm (3.4 in)
1969
51.3 mm (2.0 in)
1970
41.1 mm (1.6 in)
1971
38.1 mm (1.5 in)
1972
45.2 mm (1.8 in)
1973
34.8 mm (1.4 in)
1974
33.0 mm (1.3 in)
1975
35.6 mm (1.4 in)
1976
46.0 mm (1.8 in)
1977
32.0 mm (1.3 in)
1978
61.0 mm (2.4 in)
1979
43.7 mm (1.7 in)
1980
42.7 mm (1.7 in)
1981
29.7 mm (1.2 in)
1982
29.7 mm (1.2 in)
1983
44.2 mm (1.7 in)
1984
39.4 mm (1.6 in)
1985
26.9 mm (1.1 in)
1986
35.8 mm (1.4 in)
1987
63.5 mm (2.5 in)
1988
38.6 mm (1.5 in)
1989
24.1 mm (0.9 in)
1990
18.0 mm (0.7 in)
1991
46.2 mm (1.8 in)
1992
55.4 mm (2.2 in)
1993
36.1 mm (1.4 in)
1994
48.0 mm (1.9 in)
1995
40.4 mm (1.6 in)
1996
33.5 mm (1.3 in)
1997
61.0 mm (2.4 in)
1998
32.8 mm (1.3 in)
1999
38.9 mm (1.5 in)
2000
25.7 mm (1.0 in)
2001
23.9 mm (0.9 in)
2002
35.6 mm (1.4 in)
2003
28.2 mm (1.1 in)
2004
59.2 mm (2.3 in)
2005
33.3 mm (1.3 in)
2006
66.5 mm (2.6 in)
2007
42.7 mm (1.7 in)
2008
16.0 mm (0.6 in)
2009
23.6 mm (0.9 in)
2010
23.4 mm (0.9 in)
2011
3.8 mm (0.15 in)
Wettest five days (Rx5day)
The wettest five days of the year at Monticello 2E, 1902 to 2011. The record is 118.1 mm (4.6 in) in 1918, marked on the chart; the median year is 51.6 mm (2.0 in).
Wettest five days (Rx5day) at Monticello 2E by year
Year
Wettest five days (Rx5day)
1902
50.6 mm (2.0 in)
1903
36.6 mm (1.4 in)
1904
50.8 mm (2.0 in)
1911
56.1 mm (2.2 in)
1912
20.4 mm (0.8 in)
1913
53.3 mm (2.1 in)
1914
70.1 mm (2.8 in)
1915
33.0 mm (1.3 in)
1916
104.2 mm (4.1 in)
1917
52.1 mm (2.1 in)
1918
118.1 mm (4.6 in)
1919
50.9 mm (2.0 in)
1920
59.7 mm (2.4 in)
1921
45.7 mm (1.8 in)
1927
64.0 mm (2.5 in)
1928
72.8 mm (2.9 in)
1929
66.0 mm (2.6 in)
1930
52.2 mm (2.1 in)
1931
35.5 mm (1.4 in)
1932
53.3 mm (2.1 in)
1933
43.2 mm (1.7 in)
1934
27.9 mm (1.1 in)
1935
50.5 mm (2.0 in)
1936
48.4 mm (1.9 in)
1937
39.3 mm (1.5 in)
1938
42.9 mm (1.7 in)
1939
35.0 mm (1.4 in)
1940
67.6 mm (2.7 in)
1941
42.1 mm (1.7 in)
1942
27.4 mm (1.1 in)
1943
34.4 mm (1.4 in)
1944
22.9 mm (0.9 in)
1945
33.5 mm (1.3 in)
1946
40.4 mm (1.6 in)
1947
83.6 mm (3.3 in)
1948
48.7 mm (1.9 in)
1949
69.9 mm (2.8 in)
1950
17.0 mm (0.7 in)
1951
52.9 mm (2.1 in)
1952
65.8 mm (2.6 in)
1953
90.6 mm (3.6 in)
1954
30.9 mm (1.2 in)
1955
71.1 mm (2.8 in)
1956
72.7 mm (2.9 in)
1957
47.3 mm (1.9 in)
1958
32.7 mm (1.3 in)
1959
43.2 mm (1.7 in)
1960
53.6 mm (2.1 in)
1961
43.2 mm (1.7 in)
1962
82.8 mm (3.3 in)
1963
41.3 mm (1.6 in)
1964
48.1 mm (1.9 in)
1965
50.3 mm (2.0 in)
1966
73.4 mm (2.9 in)
1967
47.7 mm (1.9 in)
1968
90.5 mm (3.6 in)
1969
84.3 mm (3.3 in)
1970
48.2 mm (1.9 in)
1971
55.6 mm (2.2 in)
1972
91.1 mm (3.6 in)
1973
45.2 mm (1.8 in)
1974
60.9 mm (2.4 in)
1975
38.4 mm (1.5 in)
1976
73.2 mm (2.9 in)
1977
54.8 mm (2.2 in)
1978
102.1 mm (4.0 in)
1979
80.0 mm (3.1 in)
1980
55.9 mm (2.2 in)
1981
58.9 mm (2.3 in)
1982
82.4 mm (3.2 in)
1983
69.9 mm (2.8 in)
1984
51.6 mm (2.0 in)
1985
57.9 mm (2.3 in)
1986
42.0 mm (1.7 in)
1987
84.5 mm (3.3 in)
1988
52.1 mm (2.1 in)
1989
25.6 mm (1.0 in)
1990
37.0 mm (1.5 in)
1991
56.6 mm (2.2 in)
1992
61.0 mm (2.4 in)
1993
88.9 mm (3.5 in)
1994
54.4 mm (2.1 in)
1995
40.4 mm (1.6 in)
1996
37.8 mm (1.5 in)
1997
96.5 mm (3.8 in)
1998
58.4 mm (2.3 in)
1999
48.6 mm (1.9 in)
2000
47.2 mm (1.9 in)
2001
39.4 mm (1.6 in)
2002
47.5 mm (1.9 in)
2003
59.0 mm (2.3 in)
2004
59.7 mm (2.4 in)
2005
102.9 mm (4.1 in)
2006
93.4 mm (3.7 in)
2007
51.5 mm (2.0 in)
2008
25.6 mm (1.0 in)
2009
31.3 mm (1.2 in)
2010
48.5 mm (1.9 in)
2011
4.6 mm (0.18 in)
Longest dry spell (CDD)
The longest dry spell of the year at Monticello 2E, 1902 to 2011. The record is 102 days in 1972, marked on the chart; the median year is 36 days.
Longest dry spell (CDD) at Monticello 2E by year
Year
Longest dry spell (CDD)
1902
41 days
1903
61 days
1904
24 days
1911
16 days
1912
30 days
1913
29 days
1914
16 days
1915
30 days
1916
47 days
1917
24 days
1918
21 days
1919
13 days
1920
25 days
1921
15 days
1927
27 days
1928
32 days
1929
53 days
1930
38 days
1931
31 days
1932
40 days
1933
33 days
1934
56 days
1935
56 days
1936
27 days
1937
32 days
1938
34 days
1939
32 days
1940
32 days
1941
23 days
1942
68 days
1943
47 days
1944
30 days
1945
44 days
1946
30 days
1947
42 days
1948
53 days
1949
31 days
1950
50 days
1951
31 days
1952
53 days
1953
52 days
1954
30 days
1955
53 days
1956
64 days
1957
40 days
1958
34 days
1959
41 days
1960
28 days
1961
25 days
1962
33 days
1963
31 days
1964
44 days
1965
30 days
1966
30 days
1967
33 days
1968
30 days
1969
53 days
1970
37 days
1971
48 days
1972
102 days
1973
39 days
1974
30 days
1975
38 days
1976
66 days
1977
30 days
1978
42 days
1979
36 days
1980
44 days
1981
56 days
1982
48 days
1983
24 days
1984
36 days
1985
28 days
1986
24 days
1987
29 days
1988
42 days
1989
70 days
1990
37 days
1991
42 days
1992
33 days
1993
48 days
1994
65 days
1995
26 days
1996
41 days
1997
31 days
1998
32 days
1999
59 days
2000
41 days
2001
40 days
2002
36 days
2003
39 days
2004
57 days
2005
27 days
2006
63 days
2007
47 days
2008
41 days
2009
27 days
2010
27 days
2011
28 days
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
83 years with a frost
Across 83 years with a frost, the median last spring frost at Monticello 2E falls on 29 May and the median first autumn frost on 1 October, which leaves a median of 125 days between them.
In 1979 to 2010 the median growing season was 123 days. That is 8 days fewer than in 1903 to 1955.
Fitted over all years, the growing season changes by -1.4 days per decade at this station.
Frost dates and growing season at Monticello 2E
Measure
Median, all years
Earliest period (1903 to 1955)
Recent period (1979 to 2010)
Recent against earliest
Fitted trend
Last spring frost
29 May
26 May
30 May
4 days later
+0.7 days per decade
First autumn frost
1 October
6 October
27 September
9 days earlier
-0.7 days per decade
Growing days
125 days
131 days
123 days
8 days fewer
-1.4 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
72 years, 1903 to 2009
A day with at least 33.5 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 79.1 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Monticello 2E: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
33.5 mm (1.3 in)
5 years
45.6 mm (1.8 in)
10 years
53.7 mm (2.1 in)
25 years
63.9 mm (2.5 in)
50 years
71.5 mm (2.8 in)
100 years
79.1 mm (3.1 in)
Longer than the 72 years of record
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 72 years of values from 1903 to 2009.
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: 85.9 mm (3.4 in) in 1968; 66.5 mm (2.6 in) in 2006; 63.5 mm (2.5 in) in 1987.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Data for Monticello 2E standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Monticello 2E 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.