Record envelope, standing records and threshold days for Two Buttes (USC00058510), Colorado, United States, with 73 years of record.
Key Facts for Two Buttes
Two Buttes (USC00058510) is a weather station in Colorado, United States at 37.57 latitude and -102.40 longitude, 1,260 m (4,134 ft) above sea level.
The station reports from 1900 to 1972, 73 years of record.
1,464 records set at Two Buttes still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Two Buttes set a daily record low minimum temperature of -13.3 C (8.1 F) on 29 March 1972.
About the Station
Location: Colorado, United States, 37.57 latitude, -102.40 longitude.
Elevation: 1,260 m (4,134 ft).
Period of record: 1900 to 1972, 73 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 Two Buttes. 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 Two Buttes, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
26.7 C (80.1 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
32.2 C (90.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Mar
32.2 C (90.0 F)
-26.7 C (-16.1 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-15.6 C (3.9 F)
n/a
n/a
May
37.8 C (100.0 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
43.3 C (109.9 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
43.9 C (111.0 F)
7.2 C (45.0 F)
n/a
n/a
Aug
43.9 C (111.0 F)
4.4 C (39.9 F)
n/a
n/a
Sep
40.6 C (105.1 F)
-2.2 C (28.0 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-18.9 C (-2.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-22.2 C (-8.0 F)
n/a
n/a
Dec
28.3 C (82.9 F)
-30.6 C (-23.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Two Buttes still stand. 1903 holds the most, with 54.
Standing records at Two Buttes by the year they were set
Year set
Standing records
1900
6
1901
30
1902
50
1903
54
1904
14
1905
32
1906
29
1907
33
1908
16
1909
19
1910
27
1911
37
1912
31
1913
26
1914
23
1915
34
1916
30
1917
40
1918
49
1919
40
1921
23
1922
11
1923
16
1924
20
1925
33
1926
2
1927
2
1928
8
1929
21
1930
26
1931
17
1932
19
1933
32
1934
39
1935
23
1936
30
1937
15
1938
13
1939
20
1940
16
1941
20
1942
5
1943
24
1944
3
1945
16
1946
25
1947
9
1948
23
1949
7
1950
24
1951
22
1952
18
1953
19
1954
16
1955
21
1956
14
1957
8
1958
8
1959
22
1960
22
1961
14
1962
23
1963
23
1964
15
1965
19
1966
5
1967
9
1971
17
1972
7
All-Time Record Progression
5 new records
5 all-time records were set at Two Buttes between 28 July 1935 and 17 June 1965. Each dot is a new record.
When Two Buttes set new all-time records
Date
Kind
Detail
1935-07-28
Record high minimum temperature
Record high minimum temperature 30.6 C (87.1 F)
1942-06-08
Record daily precipitation
Record daily precipitation 114.3 mm (4.5 in)
1949-01-30
Record low minimum temperature
Record low minimum temperature -31.7 C (-25.1 F)
1951-05-15
Record daily precipitation
Record daily precipitation 167.6 mm (6.6 in)
1965-06-17
Record daily precipitation
Record daily precipitation 233.9 mm (9.2 in)
Wettest Day of Each Month
Jun: 233.9 mm (9.2 in)
The wettest day on record for each calendar month at Two Buttes. The most was 233.9 mm (9.2 in) on 17 June 1965.
Record daily precipitation for each month at Two Buttes
Month
Record daily precipitation (mm)
Date
Jan
28.2 mm (1.1 in)
8 January 1939
Feb
38.1 mm (1.5 in)
25 February 1912
Mar
55.9 mm (2.2 in)
4 March 1946
Apr
76.2 mm (3.0 in)
24 April 1905
May
167.6 mm (6.6 in)
15 May 1951
Jun
233.9 mm (9.2 in)
17 June 1965
Jul
66.0 mm (2.6 in)
15 July 1919
Aug
82.3 mm (3.2 in)
5 August 1948
Sep
89.2 mm (3.5 in)
17 September 1919
Oct
73.4 mm (2.9 in)
17 October 1965
Nov
22.9 mm (0.9 in)
15 November 1909
Dec
28.4 mm (1.1 in)
4 December 1913
Period of Record Coverage
1900 to 1972
Complete yearUnder 90 percent of days
71 years of record at Two Buttes, 1900 to 1972. 21 years have data for under 90 percent of days and are left out of rankings: 1900, 1921, 1923, 1924, 1925, 1926, 1927, 1928 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 37 complete years at Two Buttes, 1901 to 1965. Blue stripes are years cooler than the station's own mean of 12.0 C (53.6 F); red stripes are warmer. The coolest year was 1919, at 10.3 C (50.6 F), and the warmest was 1934, at 14.2 C (57.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Two Buttes as warming stripes, 1901 to 1965
Year
Annual mean temperature
Difference from the station mean
1901
12.6 C
+0.62 C
1902
12.7 C
+0.68 C
1903
12.0 C
-0.02 C
1904
12.0 C
+0.02 C
1907
12.2 C
+0.15 C
1909
12.0 C
-0.05 C
1910
13.0 C
+0.99 C
1911
12.5 C
+0.44 C
1913
11.1 C
-0.93 C
1915
10.4 C
-1.61 C
1916
11.1 C
-0.88 C
1917
10.6 C
-1.40 C
1918
11.4 C
-0.60 C
1919
10.3 C
-1.68 C
1922
11.9 C
-0.14 C
1929
11.2 C
-0.83 C
1934
14.2 C
+2.19 C
1935
13.3 C
+1.28 C
1937
11.8 C
-0.18 C
1938
12.8 C
+0.74 C
1939
12.4 C
+0.34 C
1940
11.8 C
-0.17 C
1942
12.1 C
+0.09 C
1943
12.3 C
+0.28 C
1950
11.9 C
-0.08 C
1951
10.9 C
-1.07 C
1953
12.9 C
+0.88 C
1954
13.3 C
+1.28 C
1955
11.9 C
-0.13 C
1957
12.1 C
+0.06 C
1958
11.9 C
-0.10 C
1959
11.5 C
-0.51 C
1960
11.4 C
-0.62 C
1961
11.5 C
-0.55 C
1962
12.2 C
+0.14 C
1963
13.0 C
+0.97 C
1965
12.4 C
+0.38 C
The fitted trend in annual mean temperature here over 1901 to 1965 is 0.05 C (-0.08 to 0.18) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.2 to 0.3) per decade. The slope is a straight line fitted to 37 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Two Buttes
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.05 C (-0.08 to 0.18) per decade
0.1 F (-0.2 to 0.3) per decade
1901 to 1965
37
Not clearly different from zero
Mean daily maximum
-0.04 C (-0.26 to 0.17) per decade
-0.1 F (-0.5 to 0.3) per decade
1901 to 1965
37
Not clearly different from zero
Mean daily minimum
0.14 C (0.03 to 0.25) per decade
0.3 F (0.1 to 0.5) per decade
1901 to 1965
37
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
1900 to 1972
Yearly extremes at Two Buttes: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.9 C (111.0 F)
1902
39.4 C (102.9 F)
71
Coldest night (TNn)
-31.7 C (-25.1 F)
1949
-22.2 C (-8.0 F)
71
Wettest day (Rx1day)
233.9 mm (9.2 in)
1965
38.9 mm (1.5 in)
71
Wettest five days (Rx5day)
267.7 mm (10.5 in)
1965
53.3 mm (2.1 in)
70
Longest dry spell (CDD)
130 days
1910
44 days
71
Hottest day (TXx)
The hottest day of the year at Two Buttes, 1900 to 1972. The record is 43.9 C (111.0 F) in 1902, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Two Buttes by year
Year
Hottest day (TXx)
1900
36.7 C (98.1 F)
1901
41.1 C (106.0 F)
1902
43.9 C (111.0 F)
1903
43.9 C (111.0 F)
1904
39.4 C (102.9 F)
1905
42.2 C (108.0 F)
1906
37.8 C (100.0 F)
1907
38.9 C (102.0 F)
1908
40.6 C (105.1 F)
1909
39.4 C (102.9 F)
1910
40.6 C (105.1 F)
1911
40.6 C (105.1 F)
1912
37.2 C (99.0 F)
1913
40.6 C (105.1 F)
1914
37.8 C (100.0 F)
1915
37.2 C (99.0 F)
1916
41.7 C (107.1 F)
1917
40.0 C (104.0 F)
1918
38.3 C (100.9 F)
1919
38.3 C (100.9 F)
1921
37.8 C (100.0 F)
1922
40.6 C (105.1 F)
1923
39.4 C (102.9 F)
1924
40.0 C (104.0 F)
1925
41.1 C (106.0 F)
1926
33.9 C (93.0 F)
1927
30.6 C (87.1 F)
1928
37.8 C (100.0 F)
1929
40.0 C (104.0 F)
1930
39.4 C (102.9 F)
1931
40.0 C (104.0 F)
1932
38.9 C (102.0 F)
1933
41.1 C (106.0 F)
1934
41.1 C (106.0 F)
1935
38.9 C (102.0 F)
1936
40.6 C (105.1 F)
1937
40.0 C (104.0 F)
1938
39.4 C (102.9 F)
1939
39.4 C (102.9 F)
1940
40.6 C (105.1 F)
1941
36.1 C (97.0 F)
1942
36.7 C (98.1 F)
1943
39.4 C (102.9 F)
1944
38.3 C (100.9 F)
1945
39.4 C (102.9 F)
1946
37.2 C (99.0 F)
1947
36.7 C (98.1 F)
1948
38.9 C (102.0 F)
1949
37.2 C (99.0 F)
1950
38.9 C (102.0 F)
1951
40.0 C (104.0 F)
1952
41.1 C (106.0 F)
1953
41.1 C (106.0 F)
1954
40.0 C (104.0 F)
1955
39.4 C (102.9 F)
1956
39.4 C (102.9 F)
1957
40.0 C (104.0 F)
1958
38.3 C (100.9 F)
1959
40.0 C (104.0 F)
1960
40.0 C (104.0 F)
1961
37.8 C (100.0 F)
1962
41.1 C (106.0 F)
1963
40.6 C (105.1 F)
1964
40.0 C (104.0 F)
1965
37.2 C (99.0 F)
1966
40.0 C (104.0 F)
1967
37.2 C (99.0 F)
1969
28.9 C (84.0 F)
1970
35.0 C (95.0 F)
1971
31.1 C (88.0 F)
1972
28.9 C (84.0 F)
Coldest night (TNn)
The coldest night of the year at Two Buttes, 1900 to 1972. The record is -31.7 C (-25.1 F) in 1949, marked on the chart; the median year is -22.2 C (-8.0 F).
Coldest night (TNn) at Two Buttes by year
Year
Coldest night (TNn)
1900
-17.8 C (0.0 F)
1901
-27.8 C (-18.0 F)
1902
-23.9 C (-11.0 F)
1903
-24.4 C (-11.9 F)
1904
-19.4 C (-2.9 F)
1905
-27.8 C (-18.0 F)
1906
-20.0 C (-4.0 F)
1907
-17.8 C (0.0 F)
1908
-20.6 C (-5.1 F)
1909
-25.0 C (-13.0 F)
1910
-23.3 C (-9.9 F)
1911
-27.2 C (-17.0 F)
1912
-26.7 C (-16.1 F)
1913
-24.4 C (-11.9 F)
1914
-23.3 C (-9.9 F)
1915
-20.6 C (-5.1 F)
1916
-26.1 C (-15.0 F)
1917
-22.2 C (-8.0 F)
1918
-28.9 C (-20.0 F)
1919
-27.8 C (-18.0 F)
1921
-20.0 C (-4.0 F)
1922
-26.7 C (-16.1 F)
1923
-22.2 C (-8.0 F)
1924
-26.7 C (-16.1 F)
1925
-18.9 C (-2.0 F)
1926
-5.6 C (21.9 F)
1927
-2.8 C (27.0 F)
1928
-12.2 C (10.0 F)
1929
-26.1 C (-15.0 F)
1930
-26.7 C (-16.1 F)
1931
-17.8 C (0.0 F)
1932
-30.6 C (-23.1 F)
1933
-30.0 C (-22.0 F)
1934
-18.9 C (-2.0 F)
1935
-22.8 C (-9.0 F)
1936
-25.0 C (-13.0 F)
1937
-23.3 C (-9.9 F)
1938
-17.8 C (0.0 F)
1939
-19.4 C (-2.9 F)
1940
-22.8 C (-9.0 F)
1941
-15.6 C (3.9 F)
1942
-23.9 C (-11.0 F)
1943
-26.7 C (-16.1 F)
1944
-20.0 C (-4.0 F)
1945
-7.8 C (18.0 F)
1946
-22.2 C (-8.0 F)
1947
-15.0 C (5.0 F)
1948
-20.6 C (-5.1 F)
1949
-31.7 C (-25.1 F)
1950
-25.6 C (-14.1 F)
1951
-26.7 C (-16.1 F)
1952
-18.3 C (-0.9 F)
1953
-16.1 C (3.0 F)
1954
-20.6 C (-5.1 F)
1955
-19.4 C (-2.9 F)
1956
-21.1 C (-6.0 F)
1957
-20.0 C (-4.0 F)
1958
-17.8 C (0.0 F)
1959
-27.8 C (-18.0 F)
1960
-24.4 C (-11.9 F)
1961
-23.9 C (-11.0 F)
1962
-25.6 C (-14.1 F)
1963
-28.3 C (-18.9 F)
1964
-20.6 C (-5.1 F)
1965
-18.9 C (-2.0 F)
1966
-23.9 C (-11.0 F)
1967
-13.3 C (8.1 F)
1969
-1.1 C (30.0 F)
1970
0.0 C (32.0 F)
1971
-11.1 C (12.0 F)
1972
-25.0 C (-13.0 F)
Wettest day (Rx1day)
The wettest day of the year at Two Buttes, 1900 to 1972. The record is 233.9 mm (9.2 in) in 1965, marked on the chart; the median year is 38.9 mm (1.5 in).
Wettest day (Rx1day) at Two Buttes by year
Year
Wettest day (Rx1day)
1900
50.8 mm (2.0 in)
1901
35.3 mm (1.4 in)
1902
65.8 mm (2.6 in)
1903
35.6 mm (1.4 in)
1904
80.3 mm (3.2 in)
1905
76.2 mm (3.0 in)
1906
48.3 mm (1.9 in)
1907
44.5 mm (1.8 in)
1908
35.6 mm (1.4 in)
1909
50.8 mm (2.0 in)
1910
35.6 mm (1.4 in)
1911
40.6 mm (1.6 in)
1912
40.9 mm (1.6 in)
1913
28.4 mm (1.1 in)
1914
75.9 mm (3.0 in)
1915
38.1 mm (1.5 in)
1916
52.6 mm (2.1 in)
1917
23.4 mm (0.9 in)
1918
42.2 mm (1.7 in)
1919
89.2 mm (3.5 in)
1921
33.0 mm (1.3 in)
1922
37.1 mm (1.5 in)
1923
41.9 mm (1.6 in)
1924
29.2 mm (1.1 in)
1925
41.4 mm (1.6 in)
1926
25.4 mm (1.0 in)
1927
0.0 mm (0.00 in)
1928
25.4 mm (1.0 in)
1929
21.6 mm (0.9 in)
1930
36.6 mm (1.4 in)
1931
16.5 mm (0.6 in)
1932
65.0 mm (2.6 in)
1933
31.0 mm (1.2 in)
1934
28.4 mm (1.1 in)
1935
46.7 mm (1.8 in)
1936
29.7 mm (1.2 in)
1937
22.4 mm (0.9 in)
1938
38.9 mm (1.5 in)
1939
32.5 mm (1.3 in)
1940
34.3 mm (1.4 in)
1941
81.3 mm (3.2 in)
1942
114.3 mm (4.5 in)
1943
45.7 mm (1.8 in)
1944
62.2 mm (2.4 in)
1945
43.2 mm (1.7 in)
1946
66.3 mm (2.6 in)
1947
34.3 mm (1.4 in)
1948
82.3 mm (3.2 in)
1949
54.6 mm (2.1 in)
1950
49.3 mm (1.9 in)
1951
167.6 mm (6.6 in)
1952
38.1 mm (1.5 in)
1953
24.1 mm (0.9 in)
1954
40.6 mm (1.6 in)
1955
67.1 mm (2.6 in)
1956
37.1 mm (1.5 in)
1957
34.3 mm (1.4 in)
1958
42.9 mm (1.7 in)
1959
24.4 mm (1.0 in)
1960
36.3 mm (1.4 in)
1961
29.2 mm (1.1 in)
1962
45.7 mm (1.8 in)
1963
39.1 mm (1.5 in)
1964
49.3 mm (1.9 in)
1965
233.9 mm (9.2 in)
1966
38.1 mm (1.5 in)
1967
52.1 mm (2.1 in)
1969
37.8 mm (1.5 in)
1970
6.4 mm (0.25 in)
1971
14.0 mm (0.6 in)
1972
7.1 mm (0.28 in)
Wettest five days (Rx5day)
The wettest five days of the year at Two Buttes, 1900 to 1972. The record is 267.7 mm (10.5 in) in 1965, marked on the chart; the median year is 53.3 mm (2.1 in).
Wettest five days (Rx5day) at Two Buttes by year
Year
Wettest five days (Rx5day)
1900
50.8 mm (2.0 in)
1901
40.3 mm (1.6 in)
1902
65.8 mm (2.6 in)
1903
44.1 mm (1.7 in)
1904
80.8 mm (3.2 in)
1905
76.2 mm (3.0 in)
1906
48.3 mm (1.9 in)
1907
49.1 mm (1.9 in)
1908
35.6 mm (1.4 in)
1909
67.6 mm (2.7 in)
1910
44.2 mm (1.7 in)
1911
53.6 mm (2.1 in)
1912
47.1 mm (1.9 in)
1913
42.1 mm (1.7 in)
1914
96.2 mm (3.8 in)
1915
71.9 mm (2.8 in)
1916
90.8 mm (3.6 in)
1917
33.0 mm (1.3 in)
1918
68.1 mm (2.7 in)
1919
95.3 mm (3.8 in)
1921
49.5 mm (1.9 in)
1922
53.1 mm (2.1 in)
1923
54.1 mm (2.1 in)
1924
37.8 mm (1.5 in)
1925
59.4 mm (2.3 in)
1926
25.4 mm (1.0 in)
1927
n/a
1928
56.8 mm (2.2 in)
1929
38.6 mm (1.5 in)
1930
51.1 mm (2.0 in)
1931
28.9 mm (1.1 in)
1932
127.8 mm (5.0 in)
1933
45.9 mm (1.8 in)
1934
35.8 mm (1.4 in)
1935
49.2 mm (1.9 in)
1936
47.5 mm (1.9 in)
1937
39.9 mm (1.6 in)
1938
67.7 mm (2.7 in)
1939
36.5 mm (1.4 in)
1940
44.8 mm (1.8 in)
1941
107.2 mm (4.2 in)
1942
155.0 mm (6.1 in)
1943
74.7 mm (2.9 in)
1944
92.7 mm (3.6 in)
1945
43.5 mm (1.7 in)
1946
80.5 mm (3.2 in)
1947
52.3 mm (2.1 in)
1948
93.2 mm (3.7 in)
1949
123.9 mm (4.9 in)
1950
58.4 mm (2.3 in)
1951
174.6 mm (6.9 in)
1952
53.9 mm (2.1 in)
1953
26.4 mm (1.0 in)
1954
70.1 mm (2.8 in)
1955
102.5 mm (4.0 in)
1956
41.7 mm (1.6 in)
1957
36.4 mm (1.4 in)
1958
53.6 mm (2.1 in)
1959
42.4 mm (1.7 in)
1960
53.4 mm (2.1 in)
1961
51.3 mm (2.0 in)
1962
72.6 mm (2.9 in)
1963
55.1 mm (2.2 in)
1964
92.0 mm (3.6 in)
1965
267.7 mm (10.5 in)
1966
62.5 mm (2.5 in)
1967
62.3 mm (2.5 in)
1969
52.5 mm (2.1 in)
1970
10.2 mm (0.4 in)
1971
22.9 mm (0.9 in)
1972
10.4 mm (0.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Two Buttes, 1900 to 1972. The record is 130 days in 1910, marked on the chart; the median year is 44 days.
Longest dry spell (CDD) at Two Buttes by year
Year
Longest dry spell (CDD)
1900
29 days
1901
48 days
1902
50 days
1903
39 days
1904
64 days
1905
56 days
1906
43 days
1907
92 days
1908
55 days
1909
41 days
1910
130 days
1911
42 days
1912
44 days
1913
32 days
1914
42 days
1915
46 days
1916
21 days
1917
59 days
1918
38 days
1919
45 days
1921
35 days
1922
57 days
1923
34 days
1924
57 days
1925
37 days
1926
16 days
1927
1 day
1928
19 days
1929
40 days
1930
78 days
1931
43 days
1932
42 days
1933
56 days
1934
33 days
1935
38 days
1936
53 days
1937
42 days
1938
45 days
1939
62 days
1940
44 days
1941
24 days
1942
37 days
1943
41 days
1944
32 days
1945
44 days
1946
31 days
1947
31 days
1948
52 days
1949
50 days
1950
59 days
1951
73 days
1952
48 days
1953
59 days
1954
63 days
1955
72 days
1956
74 days
1957
50 days
1958
61 days
1959
38 days
1960
26 days
1961
46 days
1962
44 days
1963
44 days
1964
43 days
1965
58 days
1966
47 days
1967
100 days
1969
14 days
1970
27 days
1971
29 days
1972
69 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
37 years with a frost
Across 37 years with a frost, the median last spring frost at Two Buttes falls on 1 May and the median first autumn frost on 13 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
Frost dates and growing season at Two Buttes
Measure
Median, all years
Earliest period
Recent period (1911 to 1965)
Recent against earliest
Fitted trend
Last spring frost
1 May
n/a
1 May
n/a
-2.0 days per decade
First autumn frost
13 October
n/a
10 October
n/a
+1.2 days per decade
Growing days
164 days
n/a
165 days
n/a
+3.2 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
48 years, 1901 to 1965
A day with at least 40.0 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 221.1 mm (8.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Two Buttes: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
40.0 mm (1.6 in)
5 years
62.5 mm (2.5 in)
10 years
84.5 mm (3.3 in)
25 years
124.3 mm (4.9 in)
50 years
165.8 mm (6.5 in)
Longer than the 48 years of record
100 years
221.1 mm (8.7 in)
Longer than the 48 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, 48 years of values from 1901 to 1965.
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: 233.9 mm (9.2 in) in 1965; 167.6 mm (6.6 in) in 1951; 114.3 mm (4.5 in) in 1942.
Download the Data
Data for Two Buttes standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Two Buttes 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.