Record envelope, standing records and threshold days for Butler (USC00361130), Pennsylvania, United States, with 67 years of record.
Key Facts for Butler
Butler (USC00361130) is a weather station in Pennsylvania, United States at 40.87 latitude and -79.90 longitude, 336 m (1,102 ft) above sea level.
The station reports from 1899 to 1965, 67 years of record.
1,464 records set at Butler still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Butler set a daily record precipitation of 51.3 mm (2.0 in) on 1 September 1965.
About the Station
Location: Pennsylvania, United States, 40.87 latitude, -79.90 longitude.
Elevation: 336 m (1,102 ft).
Period of record: 1899 to 1965, 67 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 Butler. 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 Butler, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.9 C (75.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Feb
22.8 C (73.0 F)
-32.8 C (-27.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-20.0 C (-4.0 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-13.9 C (7.0 F)
n/a
n/a
May
33.9 C (93.0 F)
-7.2 C (19.0 F)
n/a
n/a
Jun
37.2 C (99.0 F)
0.0 C (32.0 F)
n/a
n/a
Jul
40.0 C (104.0 F)
3.3 C (37.9 F)
n/a
n/a
Aug
38.3 C (100.9 F)
1.1 C (34.0 F)
n/a
n/a
Sep
37.8 C (100.0 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-8.3 C (17.1 F)
n/a
n/a
Nov
28.3 C (82.9 F)
-20.6 C (-5.1 F)
n/a
n/a
Dec
21.1 C (70.0 F)
-27.8 C (-18.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Butler still stand. 1930 holds the most, with 61.
Standing records at Butler by the year they were set
Year set
Standing records
1899
48
1900
42
1901
18
1903
47
1927
48
1928
35
1929
42
1930
61
1931
39
1932
54
1933
42
1934
46
1935
24
1936
61
1937
27
1938
34
1939
28
1940
36
1941
30
1942
40
1943
36
1944
15
1945
37
1946
45
1947
26
1948
28
1949
44
1950
32
1951
33
1952
34
1953
22
1954
30
1955
31
1956
29
1957
28
1958
28
1959
22
1960
15
1961
20
1962
32
1963
39
1964
35
1965
1
All-Time Record Progression
1 new records
1 all-time records were set at Butler between 16 October 1954 and 16 October 1954. Each dot is a new record.
When Butler set new all-time records
Date
Kind
Detail
1954-10-16
Record daily precipitation
Record daily precipitation 110.5 mm (4.4 in)
Wettest Day of Each Month
Oct: 110.5 mm (4.4 in)
The wettest day on record for each calendar month at Butler. The most was 110.5 mm (4.4 in) on 16 October 1954.
Record daily precipitation for each month at Butler
Month
Record daily precipitation (mm)
Date
Jan
46.7 mm (1.8 in)
27 January 1952
Feb
36.3 mm (1.4 in)
24 February 1962
Mar
56.6 mm (2.2 in)
10 March 1964
Apr
58.4 mm (2.3 in)
5 April 1929
May
67.1 mm (2.6 in)
16 May 1942
Jun
71.1 mm (2.8 in)
28 June 1903
Jul
66.8 mm (2.6 in)
15 July 1943
Aug
93.0 mm (3.7 in)
9 August 1934
Sep
67.3 mm (2.6 in)
2 September 1931
Oct
110.5 mm (4.4 in)
16 October 1954
Nov
83.3 mm (3.3 in)
25 November 1950
Dec
35.6 mm (1.4 in)
16 December 1948
Period of Record Coverage
1899 to 1965
Complete yearUnder 90 percent of days
43 years of record at Butler, 1899 to 1965. 9 years have data for under 90 percent of days and are left out of rankings: 1901, 1927, 1935, 1958, 1960, 1961, 1962, 1963 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Butler, 1900 to 1964. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1963, at 8.0 C (46.5 F), and the warmest was 1949, at 12.1 C (53.9 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Butler as warming stripes, 1900 to 1964
Year
Annual mean temperature
Difference from the station mean
1900
9.9 C
-0.50 C
1903
9.5 C
-0.90 C
1928
10.0 C
-0.40 C
1929
10.1 C
-0.32 C
1930
10.6 C
+0.17 C
1931
11.5 C
+1.14 C
1932
10.7 C
+0.33 C
1933
10.8 C
+0.39 C
1936
9.9 C
-0.48 C
1937
10.1 C
-0.26 C
1938
11.1 C
+0.68 C
1939
11.1 C
+0.72 C
1940
9.5 C
-0.90 C
1941
11.0 C
+0.63 C
1942
10.6 C
+0.18 C
1943
9.7 C
-0.74 C
1944
10.4 C
-0.01 C
1945
10.5 C
+0.05 C
1946
11.1 C
+0.71 C
1947
10.4 C
+0.04 C
1948
10.7 C
+0.29 C
1949
12.1 C
+1.74 C
1950
10.2 C
-0.19 C
1951
10.7 C
+0.25 C
1952
11.1 C
+0.65 C
1953
11.4 C
+1.00 C
1954
11.1 C
+0.74 C
1955
11.1 C
+0.70 C
1956
10.8 C
+0.41 C
1957
10.3 C
-0.07 C
1959
11.0 C
+0.63 C
1961
9.1 C
-1.34 C
1962
8.9 C
-1.54 C
1963
8.0 C
-2.36 C
1964
9.1 C
-1.32 C
The fitted trend in annual mean temperature here over 1900 to 1964 is -0.03 C (-0.23 to 0.17) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.4 to 0.3) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Butler
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.03 C (-0.23 to 0.17) per decade
-0.1 F (-0.4 to 0.3) per decade
1900 to 1964
35
Not clearly different from zero
Mean daily maximum
0.1 C (-0.2 to 0.3) per decade
0.1 F (-0.3 to 0.6) per decade
1900 to 1964
35
Not clearly different from zero
Mean daily minimum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.6 to 0.1) per decade
1900 to 1964
35
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
1899 to 1965
Yearly extremes at Butler: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.0 C (104.0 F)
1936
35.6 C (96.1 F)
43
Coldest night (TNn)
-32.8 C (-27.0 F)
1899
-23.3 C (-9.9 F)
43
Wettest day (Rx1day)
110.5 mm (4.4 in)
1954
49.3 mm (1.9 in)
43
Wettest five days (Rx5day)
156.5 mm (6.2 in)
1901
78.7 mm (3.1 in)
43
Longest dry spell (CDD)
27 days
1963
16 days
43
Hottest day (TXx)
The hottest day of the year at Butler, 1899 to 1965. The record is 40.0 C (104.0 F) in 1936, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Butler by year
Year
Hottest day (TXx)
1899
32.8 C (91.0 F)
1900
35.0 C (95.0 F)
1901
35.0 C (95.0 F)
1903
32.8 C (91.0 F)
1927
35.0 C (95.0 F)
1928
33.3 C (91.9 F)
1929
35.6 C (96.1 F)
1930
37.8 C (100.0 F)
1931
37.8 C (100.0 F)
1932
36.7 C (98.1 F)
1933
38.3 C (100.9 F)
1934
37.2 C (99.0 F)
1935
33.9 C (93.0 F)
1936
40.0 C (104.0 F)
1937
35.0 C (95.0 F)
1938
35.6 C (96.1 F)
1939
35.6 C (96.1 F)
1940
36.1 C (97.0 F)
1941
35.6 C (96.1 F)
1942
36.7 C (98.1 F)
1943
35.6 C (96.1 F)
1944
36.1 C (97.0 F)
1945
35.0 C (95.0 F)
1946
35.6 C (96.1 F)
1947
35.6 C (96.1 F)
1948
38.3 C (100.9 F)
1949
37.2 C (99.0 F)
1950
33.9 C (93.0 F)
1951
35.6 C (96.1 F)
1952
37.2 C (99.0 F)
1953
37.8 C (100.0 F)
1954
37.8 C (100.0 F)
1955
36.1 C (97.0 F)
1956
34.4 C (93.9 F)
1957
33.9 C (93.0 F)
1958
32.2 C (90.0 F)
1959
35.6 C (96.1 F)
1960
32.8 C (91.0 F)
1961
33.9 C (93.0 F)
1962
33.9 C (93.0 F)
1963
33.9 C (93.0 F)
1964
35.6 C (96.1 F)
1965
32.2 C (90.0 F)
Coldest night (TNn)
The coldest night of the year at Butler, 1899 to 1965. The record is -32.8 C (-27.0 F) in 1899, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Butler by year
Year
Coldest night (TNn)
1899
-32.8 C (-27.0 F)
1900
-27.2 C (-17.0 F)
1901
-23.3 C (-9.9 F)
1903
-22.8 C (-9.0 F)
1927
-13.9 C (7.0 F)
1928
-18.3 C (-0.9 F)
1929
-25.0 C (-13.0 F)
1930
-23.3 C (-9.9 F)
1931
-16.1 C (3.0 F)
1932
-21.1 C (-6.0 F)
1933
-22.8 C (-9.0 F)
1934
-31.1 C (-24.0 F)
1935
-22.2 C (-8.0 F)
1936
-28.3 C (-18.9 F)
1937
-17.8 C (0.0 F)
1938
-16.1 C (3.0 F)
1939
-20.0 C (-4.0 F)
1940
-22.2 C (-8.0 F)
1941
-21.1 C (-6.0 F)
1942
-28.3 C (-18.9 F)
1943
-23.3 C (-9.9 F)
1944
-26.1 C (-15.0 F)
1945
-24.4 C (-11.9 F)
1946
-24.4 C (-11.9 F)
1947
-19.4 C (-2.9 F)
1948
-26.1 C (-15.0 F)
1949
-19.4 C (-2.9 F)
1950
-26.7 C (-16.1 F)
1951
-27.8 C (-18.0 F)
1952
-15.0 C (5.0 F)
1953
-13.3 C (8.1 F)
1954
-20.6 C (-5.1 F)
1955
-25.0 C (-13.0 F)
1956
-15.6 C (3.9 F)
1957
-23.3 C (-9.9 F)
1958
-25.6 C (-14.1 F)
1959
-22.2 C (-8.0 F)
1960
-23.9 C (-11.0 F)
1961
-26.7 C (-16.1 F)
1962
-21.7 C (-7.1 F)
1963
-30.0 C (-22.0 F)
1964
-26.7 C (-16.1 F)
1965
-8.3 C (17.1 F)
Wettest day (Rx1day)
The wettest day of the year at Butler, 1899 to 1965. The record is 110.5 mm (4.4 in) in 1954, marked on the chart; the median year is 49.3 mm (1.9 in).
Wettest day (Rx1day) at Butler by year
Year
Wettest day (Rx1day)
1899
46.2 mm (1.8 in)
1900
53.8 mm (2.1 in)
1901
69.9 mm (2.8 in)
1903
81.0 mm (3.2 in)
1927
41.7 mm (1.6 in)
1928
64.8 mm (2.6 in)
1929
76.5 mm (3.0 in)
1930
64.8 mm (2.6 in)
1931
67.3 mm (2.6 in)
1932
30.5 mm (1.2 in)
1933
38.1 mm (1.5 in)
1934
93.0 mm (3.7 in)
1935
48.3 mm (1.9 in)
1936
52.6 mm (2.1 in)
1937
45.7 mm (1.8 in)
1938
46.0 mm (1.8 in)
1939
62.7 mm (2.5 in)
1940
49.0 mm (1.9 in)
1941
78.7 mm (3.1 in)
1942
67.1 mm (2.6 in)
1943
66.8 mm (2.6 in)
1944
40.9 mm (1.6 in)
1945
39.4 mm (1.6 in)
1946
36.6 mm (1.4 in)
1947
41.1 mm (1.6 in)
1948
58.4 mm (2.3 in)
1949
44.5 mm (1.8 in)
1950
83.3 mm (3.3 in)
1951
36.8 mm (1.4 in)
1952
63.5 mm (2.5 in)
1953
50.3 mm (2.0 in)
1954
110.5 mm (4.4 in)
1955
41.1 mm (1.6 in)
1956
51.1 mm (2.0 in)
1957
49.3 mm (1.9 in)
1958
38.9 mm (1.5 in)
1959
49.0 mm (1.9 in)
1960
38.1 mm (1.5 in)
1961
36.8 mm (1.4 in)
1962
39.4 mm (1.6 in)
1963
49.3 mm (1.9 in)
1964
56.6 mm (2.2 in)
1965
51.3 mm (2.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Butler, 1899 to 1965. The record is 156.5 mm (6.2 in) in 1901, marked on the chart; the median year is 78.7 mm (3.1 in).
Wettest five days (Rx5day) at Butler by year
Year
Wettest five days (Rx5day)
1899
61.4 mm (2.4 in)
1900
96.7 mm (3.8 in)
1901
156.5 mm (6.2 in)
1903
122.7 mm (4.8 in)
1927
68.9 mm (2.7 in)
1928
129.1 mm (5.1 in)
1929
101.9 mm (4.0 in)
1930
76.5 mm (3.0 in)
1931
72.1 mm (2.8 in)
1932
40.9 mm (1.6 in)
1933
78.7 mm (3.1 in)
1934
101.6 mm (4.0 in)
1935
60.5 mm (2.4 in)
1936
104.4 mm (4.1 in)
1937
75.2 mm (3.0 in)
1938
72.7 mm (2.9 in)
1939
98.3 mm (3.9 in)
1940
94.3 mm (3.7 in)
1941
118.1 mm (4.6 in)
1942
74.7 mm (2.9 in)
1943
83.7 mm (3.3 in)
1944
54.5 mm (2.1 in)
1945
84.4 mm (3.3 in)
1946
50.6 mm (2.0 in)
1947
67.9 mm (2.7 in)
1948
81.3 mm (3.2 in)
1949
60.2 mm (2.4 in)
1950
86.8 mm (3.4 in)
1951
52.6 mm (2.1 in)
1952
90.7 mm (3.6 in)
1953
74.5 mm (2.9 in)
1954
125.0 mm (4.9 in)
1955
80.3 mm (3.2 in)
1956
112.0 mm (4.4 in)
1957
105.7 mm (4.2 in)
1958
61.7 mm (2.4 in)
1959
85.4 mm (3.4 in)
1960
51.3 mm (2.0 in)
1961
50.2 mm (2.0 in)
1962
49.7 mm (2.0 in)
1963
57.7 mm (2.3 in)
1964
91.2 mm (3.6 in)
1965
76.2 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Butler, 1899 to 1965. The record is 27 days in 1963, marked on the chart; the median year is 16 days.
Longest dry spell (CDD) at Butler by year
Year
Longest dry spell (CDD)
1899
21 days
1900
13 days
1901
14 days
1903
19 days
1927
11 days
1928
24 days
1929
16 days
1930
17 days
1931
17 days
1932
22 days
1933
16 days
1934
19 days
1935
14 days
1936
13 days
1937
11 days
1938
23 days
1939
12 days
1940
13 days
1941
20 days
1942
20 days
1943
26 days
1944
18 days
1945
11 days
1946
23 days
1947
18 days
1948
18 days
1949
17 days
1950
17 days
1951
15 days
1952
19 days
1953
21 days
1954
14 days
1955
14 days
1956
13 days
1957
16 days
1958
16 days
1959
16 days
1960
13 days
1961
14 days
1962
14 days
1963
27 days
1964
24 days
1965
14 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
35 years with a frost
Across 35 years with a frost, the median last spring frost at Butler falls on 13 May and the median first autumn frost on 28 September, which leaves a median of 142 days between them.
Fitted over all years, the growing season changes by -2.2 days per decade at this station.
Frost dates and growing season at Butler
Measure
Median, all years
Earliest period
Recent period (1931 to 1964)
Recent against earliest
Fitted trend
Last spring frost
13 May
n/a
13 May
n/a
-1.2 days per decade
First autumn frost
28 September
n/a
27 September
n/a
-3.5 days per decade
Growing days
142 days
n/a
141 days
n/a
-2.2 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
34 years, 1899 to 1964
A day with at least 51.4 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 115.7 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Butler: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.4 mm (2.0 in)
5 years
66.9 mm (2.6 in)
10 years
77.8 mm (3.1 in)
25 years
92.4 mm (3.6 in)
50 years
103.8 mm (4.1 in)
Longer than the 34 years of record
100 years
115.7 mm (4.6 in)
Longer than the 34 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, 34 years of values from 1899 to 1964.
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: 110.5 mm (4.4 in) in 1954; 83.3 mm (3.3 in) in 1950; 81.0 mm (3.2 in) in 1903.
Download the Data
Data for Butler standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Butler 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.