Record envelope, standing records and threshold days for Sedgwick (USC00057513), Colorado, United States, with 99 years of record.
Key Facts for Sedgwick
Sedgwick (USC00057513) is a weather station in Colorado, United States at 40.94 latitude and -102.53 longitude, 1,092 m (3,584 ft) above sea level.
The station reports from 1908 to 2006, 99 years of record.
1,464 records set at Sedgwick still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Sedgwick set a daily record snowfall of 2.5 cm (1.0 in) on 28 December 2006.
About the Station
Location: Colorado, United States, 40.94 latitude, -102.53 longitude.
Elevation: 1,092 m (3,584 ft).
Period of record: 1908 to 2006, 99 years.
Eligible elements: tmax, tmin, prcp, snow.
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 Sedgwick. 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 Sedgwick, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.1 C (70.0 F)
-40.0 C (-40.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-19.4 C (-2.9 F)
n/a
n/a
May
37.8 C (100.0 F)
-9.4 C (15.1 F)
n/a
n/a
Jun
42.8 C (109.0 F)
-1.1 C (30.0 F)
n/a
n/a
Jul
45.6 C (114.1 F)
2.2 C (36.0 F)
n/a
n/a
Aug
44.4 C (111.9 F)
-0.6 C (30.9 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-8.3 C (17.1 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-18.3 C (-0.9 F)
n/a
n/a
Nov
33.9 C (93.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-37.2 C (-35.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Sedgwick still stand. 1939 holds the most, with 50.
Standing records at Sedgwick by the year they were set
Year set
Standing records
1908
11
1909
37
1910
46
1911
41
1912
49
1913
29
1914
24
1915
29
1916
24
1917
21
1918
40
1919
34
1920
35
1921
21
1922
23
1923
23
1924
36
1925
30
1926
1
1927
4
1928
5
1929
25
1930
35
1931
49
1932
38
1933
31
1934
36
1935
26
1936
41
1937
31
1938
41
1939
50
1940
45
1941
23
1942
30
1943
27
1944
19
1945
23
1946
17
1947
3
1948
35
1949
19
1950
33
1951
23
1952
33
1953
36
1954
45
1955
31
1956
21
1957
15
1958
20
All-Time Record Progression
1 new records
1 all-time records were set at Sedgwick between 11 July 1954 and 11 July 1954. Each dot is a new record.
When Sedgwick set new all-time records
Date
Kind
Detail
1954-07-11
Record high maximum temperature
Record high maximum temperature 45.6 C (114.1 F)
Wettest Day of Each Month
Oct: 108.0 mm (4.3 in)
The wettest day on record for each calendar month at Sedgwick. The most was 108.0 mm (4.3 in) on 19 October 1908.
Record daily precipitation for each month at Sedgwick
Month
Record daily precipitation (mm)
Date
Jan
24.9 mm (1.0 in)
8 January 1939
Feb
17.8 mm (0.7 in)
16 February 2006
Mar
59.7 mm (2.4 in)
8 March 2000
Apr
72.4 mm (2.9 in)
30 April 1942
May
64.8 mm (2.6 in)
22 May 1915
Jun
77.5 mm (3.1 in)
15 June 1914
Jul
98.0 mm (3.9 in)
10 July 1944
Aug
97.8 mm (3.9 in)
2 August 1956
Sep
63.5 mm (2.5 in)
1 September 1909
Oct
108.0 mm (4.3 in)
19 October 1908
Nov
50.8 mm (2.0 in)
29 November 1908
Dec
19.3 mm (0.8 in)
20 December 1918
Period of Record Coverage
1908 to 1958
Complete yearUnder 90 percent of days
51 years of record at Sedgwick, 1908 to 1958. 17 years have data for under 90 percent of days and are left out of rankings: 1908, 1913, 1915, 1917, 1923, 1924, 1925, 1926 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Sedgwick, 1909 to 1957. Blue stripes are years cooler than the station's own mean of 9.9 C (49.8 F); red stripes are warmer. The coolest year was 1912, at 7.1 C (44.7 F), and the warmest was 1954, at 12.1 C (53.8 F). The strongest colour marks a difference of 2.9 C (5.2 F).
Annual mean temperature at Sedgwick as warming stripes, 1909 to 1957
Year
Annual mean temperature
Difference from the station mean
1909
8.6 C
-1.25 C
1910
10.9 C
+1.00 C
1911
9.8 C
-0.11 C
1912
7.1 C
-2.81 C
1914
9.6 C
-0.33 C
1916
8.5 C
-1.35 C
1918
9.7 C
-0.20 C
1919
8.7 C
-1.21 C
1920
9.1 C
-0.77 C
1921
10.4 C
+0.54 C
1925
9.5 C
-0.39 C
1930
9.2 C
-0.70 C
1936
9.5 C
-0.43 C
1937
9.0 C
-0.86 C
1938
10.9 C
+1.03 C
1939
11.0 C
+1.09 C
1940
10.9 C
+1.01 C
1941
10.7 C
+0.76 C
1942
8.4 C
-1.49 C
1943
10.4 C
+0.53 C
1944
9.7 C
-0.22 C
1948
9.5 C
-0.35 C
1949
9.4 C
-0.48 C
1950
9.9 C
-0.04 C
1952
10.7 C
+0.78 C
1953
11.6 C
+1.69 C
1954
12.1 C
+2.22 C
1955
10.4 C
+0.47 C
1956
11.3 C
+1.44 C
1957
10.3 C
+0.42 C
The annual mean temperature here has risen by 0.4 C (0.1 to 0.6) per decade over 1909 to 1957. In Fahrenheit: 0.7 F (0.3 to 1.0) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Sedgwick
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.1 to 0.6) per decade
0.7 F (0.3 to 1.0) per decade
1909 to 1957
30
Rise
Mean daily maximum
0.31 C (-0.02 to 0.63) per decade
0.55 F (-0.03 to 1.13) per decade
1909 to 1957
30
Not clearly different from zero
Mean daily minimum
0.4 C (0.2 to 0.6) per decade
0.8 F (0.4 to 1.1) per decade
1909 to 1957
30
Rise
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
1908 to 2006
Yearly extremes at Sedgwick: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
45.6 C (114.1 F)
1954
40.0 C (104.0 F)
51
Coldest night (TNn)
-40.0 C (-40.0 F)
1912
-26.1 C (-15.0 F)
51
Wettest day (Rx1day)
108.0 mm (4.3 in)
1908
40.6 mm (1.6 in)
61
Wettest five days (Rx5day)
126.0 mm (5.0 in)
1933
60.0 mm (2.4 in)
60
Longest dry spell (CDD)
80 days
1910
40 days
61
Hottest day (TXx)
The hottest day of the year at Sedgwick, 1908 to 2006. The record is 45.6 C (114.1 F) in 1954, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Sedgwick by year
Year
Hottest day (TXx)
1908
37.8 C (100.0 F)
1909
37.2 C (99.0 F)
1910
39.4 C (102.9 F)
1911
38.3 C (100.9 F)
1912
37.2 C (99.0 F)
1913
40.6 C (105.1 F)
1914
38.9 C (102.0 F)
1915
37.2 C (99.0 F)
1916
37.2 C (99.0 F)
1917
40.0 C (104.0 F)
1918
43.3 C (109.9 F)
1919
40.6 C (105.1 F)
1920
37.8 C (100.0 F)
1921
38.3 C (100.9 F)
1922
40.0 C (104.0 F)
1923
36.7 C (98.1 F)
1924
37.8 C (100.0 F)
1925
40.0 C (104.0 F)
1926
18.9 C (66.0 F)
1927
37.8 C (100.0 F)
1928
35.6 C (96.1 F)
1929
40.6 C (105.1 F)
1930
40.6 C (105.1 F)
1931
41.7 C (107.1 F)
1932
40.6 C (105.1 F)
1933
39.4 C (102.9 F)
1934
44.4 C (111.9 F)
1935
41.1 C (106.0 F)
1936
42.2 C (108.0 F)
1937
42.2 C (108.0 F)
1938
44.4 C (111.9 F)
1939
45.0 C (113.0 F)
1940
45.0 C (113.0 F)
1941
40.0 C (104.0 F)
1942
38.9 C (102.0 F)
1943
38.9 C (102.0 F)
1944
38.3 C (100.9 F)
1945
38.9 C (102.0 F)
1946
40.6 C (105.1 F)
1947
32.2 C (90.0 F)
1948
40.0 C (104.0 F)
1949
37.8 C (100.0 F)
1950
37.8 C (100.0 F)
1951
37.8 C (100.0 F)
1952
41.7 C (107.1 F)
1953
41.7 C (107.1 F)
1954
45.6 C (114.1 F)
1955
40.6 C (105.1 F)
1956
40.6 C (105.1 F)
1957
38.3 C (100.9 F)
1958
40.6 C (105.1 F)
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
2003
n/a
2004
n/a
2005
n/a
2006
n/a
Coldest night (TNn)
The coldest night of the year at Sedgwick, 1908 to 2006. The record is -40.0 C (-40.0 F) in 1912, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Sedgwick by year
Year
Coldest night (TNn)
1908
-25.6 C (-14.1 F)
1909
-26.1 C (-15.0 F)
1910
-21.7 C (-7.1 F)
1911
-30.6 C (-23.1 F)
1912
-40.0 C (-40.0 F)
1913
-31.7 C (-25.1 F)
1914
-27.8 C (-18.0 F)
1915
-25.6 C (-14.1 F)
1916
-28.9 C (-20.0 F)
1917
-23.3 C (-9.9 F)
1918
-30.6 C (-23.1 F)
1919
-37.2 C (-35.0 F)
1920
-26.1 C (-15.0 F)
1921
-21.1 C (-6.0 F)
1922
-27.2 C (-17.0 F)
1923
-28.3 C (-18.9 F)
1924
-37.2 C (-35.0 F)
1925
-24.4 C (-11.9 F)
1926
-18.9 C (-2.0 F)
1927
-1.1 C (30.0 F)
1928
-18.9 C (-2.0 F)
1929
-28.3 C (-18.9 F)
1930
-34.4 C (-29.9 F)
1931
-20.0 C (-4.0 F)
1932
-30.6 C (-23.1 F)
1933
-31.7 C (-25.1 F)
1934
-24.4 C (-11.9 F)
1935
-30.0 C (-22.0 F)
1936
-31.7 C (-25.1 F)
1937
-30.0 C (-22.0 F)
1938
-24.4 C (-11.9 F)
1939
-26.7 C (-16.1 F)
1940
-32.8 C (-27.0 F)
1941
-27.2 C (-17.0 F)
1942
-31.1 C (-24.0 F)
1943
-28.9 C (-20.0 F)
1944
-23.3 C (-9.9 F)
1945
-25.6 C (-14.1 F)
1946
-25.0 C (-13.0 F)
1947
-19.4 C (-2.9 F)
1948
-29.4 C (-20.9 F)
1949
-25.0 C (-13.0 F)
1950
-28.9 C (-20.0 F)
1951
-31.1 C (-24.0 F)
1952
-23.3 C (-9.9 F)
1953
-19.4 C (-2.9 F)
1954
-21.1 C (-6.0 F)
1955
-24.4 C (-11.9 F)
1956
-23.3 C (-9.9 F)
1957
-26.1 C (-15.0 F)
1958
-18.9 C (-2.0 F)
1997
n/a
1998
n/a
1999
n/a
2000
n/a
2001
n/a
2002
n/a
2003
n/a
2004
n/a
2005
n/a
2006
n/a
Wettest day (Rx1day)
The wettest day of the year at Sedgwick, 1908 to 2006. The record is 108.0 mm (4.3 in) in 1908, marked on the chart; the median year is 40.6 mm (1.6 in).
Wettest day (Rx1day) at Sedgwick by year
Year
Wettest day (Rx1day)
1908
108.0 mm (4.3 in)
1909
81.3 mm (3.2 in)
1910
40.6 mm (1.6 in)
1911
43.4 mm (1.7 in)
1912
37.1 mm (1.5 in)
1913
44.7 mm (1.8 in)
1914
77.5 mm (3.1 in)
1915
64.8 mm (2.6 in)
1916
31.0 mm (1.2 in)
1917
32.3 mm (1.3 in)
1918
59.7 mm (2.4 in)
1919
29.7 mm (1.2 in)
1920
42.2 mm (1.7 in)
1921
68.6 mm (2.7 in)
1922
37.3 mm (1.5 in)
1923
39.1 mm (1.5 in)
1924
24.9 mm (1.0 in)
1925
45.2 mm (1.8 in)
1926
8.4 mm (0.33 in)
1927
38.1 mm (1.5 in)
1928
35.1 mm (1.4 in)
1929
33.0 mm (1.3 in)
1930
61.0 mm (2.4 in)
1931
25.9 mm (1.0 in)
1932
48.0 mm (1.9 in)
1933
46.0 mm (1.8 in)
1934
35.3 mm (1.4 in)
1935
29.5 mm (1.2 in)
1936
50.3 mm (2.0 in)
1937
50.8 mm (2.0 in)
1938
40.1 mm (1.6 in)
1939
26.7 mm (1.1 in)
1940
50.8 mm (2.0 in)
1941
31.2 mm (1.2 in)
1942
72.4 mm (2.9 in)
1943
36.3 mm (1.4 in)
1944
98.0 mm (3.9 in)
1945
32.5 mm (1.3 in)
1946
33.0 mm (1.3 in)
1947
12.7 mm (0.5 in)
1948
27.2 mm (1.1 in)
1949
42.7 mm (1.7 in)
1950
36.8 mm (1.4 in)
1951
61.7 mm (2.4 in)
1952
55.4 mm (2.2 in)
1953
55.9 mm (2.2 in)
1954
52.1 mm (2.1 in)
1955
47.2 mm (1.9 in)
1956
97.8 mm (3.9 in)
1957
50.5 mm (2.0 in)
1958
40.1 mm (1.6 in)
1997
44.7 mm (1.8 in)
1998
91.7 mm (3.6 in)
1999
35.1 mm (1.4 in)
2000
64.3 mm (2.5 in)
2001
34.3 mm (1.4 in)
2002
42.7 mm (1.7 in)
2003
36.6 mm (1.4 in)
2004
23.4 mm (0.9 in)
2005
35.6 mm (1.4 in)
2006
30.7 mm (1.2 in)
Wettest five days (Rx5day)
The wettest five days of the year at Sedgwick, 1908 to 2006. The record is 126.0 mm (5.0 in) in 1933, marked on the chart; the median year is 60.0 mm (2.4 in).
Wettest five days (Rx5day) at Sedgwick by year
Year
Wettest five days (Rx5day)
1908
125.7 mm (4.9 in)
1909
92.7 mm (3.6 in)
1910
57.9 mm (2.3 in)
1911
57.1 mm (2.2 in)
1912
55.6 mm (2.2 in)
1913
61.0 mm (2.4 in)
1914
122.0 mm (4.8 in)
1915
80.5 mm (3.2 in)
1916
58.9 mm (2.3 in)
1917
43.7 mm (1.7 in)
1918
91.5 mm (3.6 in)
1919
54.3 mm (2.1 in)
1920
78.7 mm (3.1 in)
1921
72.4 mm (2.9 in)
1922
85.3 mm (3.4 in)
1923
70.1 mm (2.8 in)
1924
62.0 mm (2.4 in)
1925
34.8 mm (1.4 in)
1926
8.4 mm (0.33 in)
1927
n/a
1928
41.2 mm (1.6 in)
1929
57.0 mm (2.2 in)
1930
100.3 mm (3.9 in)
1931
35.8 mm (1.4 in)
1932
68.8 mm (2.7 in)
1933
126.0 mm (5.0 in)
1934
22.1 mm (0.9 in)
1935
43.4 mm (1.7 in)
1936
60.5 mm (2.4 in)
1937
57.7 mm (2.3 in)
1938
59.4 mm (2.3 in)
1939
37.9 mm (1.5 in)
1940
82.4 mm (3.2 in)
1941
49.9 mm (2.0 in)
1942
117.8 mm (4.6 in)
1943
64.7 mm (2.5 in)
1944
120.9 mm (4.8 in)
1945
55.6 mm (2.2 in)
1946
51.2 mm (2.0 in)
1947
19.1 mm (0.8 in)
1948
58.8 mm (2.3 in)
1949
66.3 mm (2.6 in)
1950
73.7 mm (2.9 in)
1951
91.9 mm (3.6 in)
1952
67.1 mm (2.6 in)
1953
76.7 mm (3.0 in)
1954
53.1 mm (2.1 in)
1955
84.2 mm (3.3 in)
1956
117.6 mm (4.6 in)
1957
68.4 mm (2.7 in)
1958
57.7 mm (2.3 in)
1997
52.1 mm (2.1 in)
1998
102.6 mm (4.0 in)
1999
43.2 mm (1.7 in)
2000
81.3 mm (3.2 in)
2001
69.1 mm (2.7 in)
2002
43.8 mm (1.7 in)
2003
49.8 mm (2.0 in)
2004
40.2 mm (1.6 in)
2005
58.2 mm (2.3 in)
2006
30.7 mm (1.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Sedgwick, 1908 to 2006. The record is 80 days in 1910, marked on the chart; the median year is 40 days.
Longest dry spell (CDD) at Sedgwick by year
Year
Longest dry spell (CDD)
1908
39 days
1909
31 days
1910
80 days
1911
59 days
1912
27 days
1913
30 days
1914
47 days
1915
46 days
1916
38 days
1917
44 days
1918
30 days
1919
31 days
1920
43 days
1921
24 days
1922
47 days
1923
25 days
1924
40 days
1925
39 days
1926
38 days
1927
1 day
1928
31 days
1929
36 days
1930
42 days
1931
52 days
1932
47 days
1933
64 days
1934
66 days
1935
55 days
1936
75 days
1937
40 days
1938
52 days
1939
74 days
1940
34 days
1941
30 days
1942
34 days
1943
44 days
1944
26 days
1945
57 days
1946
53 days
1947
23 days
1948
31 days
1949
43 days
1950
36 days
1951
34 days
1952
33 days
1953
45 days
1954
60 days
1955
32 days
1956
47 days
1957
42 days
1958
21 days
1997
44 days
1998
39 days
1999
41 days
2000
41 days
2001
35 days
2002
60 days
2003
41 days
2004
38 days
2005
62 days
2006
38 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Sedgwick falls on 12 May and the median first autumn frost on 26 September, which leaves a median of 138 days between them.
Fitted over all years, the growing season changes by +4.8 days per decade at this station.
Frost dates and growing season at Sedgwick
Measure
Median, all years
Earliest period
Recent period (1909 to 1957)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
12 May
n/a
-2.1 days per decade
First autumn frost
26 September
n/a
26 September
n/a
+2.7 days per decade
Growing days
138 days
n/a
138 days
n/a
+4.8 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
37 years, 1910 to 2006
A day with at least 42.4 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 124.7 mm (4.9 in) of rain is expected about once in 100 years.
Rainfall return levels at Sedgwick: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
42.4 mm (1.7 in)
5 years
59.1 mm (2.3 in)
10 years
72.0 mm (2.8 in)
25 years
90.8 mm (3.6 in)
50 years
106.8 mm (4.2 in)
Longer than the 37 years of record
100 years
124.7 mm (4.9 in)
Longer than the 37 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, 37 years of values from 1910 to 2006.
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: 98.0 mm (3.9 in) in 1944; 97.8 mm (3.9 in) in 1956; 91.7 mm (3.6 in) in 1998.
Download the Data
Data for Sedgwick standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sedgwick 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.