Record envelope, standing records and threshold days for Springs 1 SW (USC00368395), Pennsylvania, United States, with 42 years of record.
Key Facts for Springs 1 SW
Springs 1 SW (USC00368395) is a weather station in Pennsylvania, United States at 39.73 latitude and -79.17 longitude, 763 m (2,503 ft) above sea level.
The station reports from 1917 to 1958, 42 years of record.
1,464 records set at Springs 1 SW still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Springs 1 SW set a daily record high minimum temperature of 10.6 C (51.1 F) on 17 November 1958.
About the Station
Location: Pennsylvania, United States, 39.73 latitude, -79.17 longitude.
Elevation: 763 m (2,503 ft).
Period of record: 1917 to 1958, 42 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 Springs 1 SW. 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 Springs 1 SW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
21.7 C (71.1 F)
-30.6 C (-23.1 F)
n/a
n/a
Feb
21.7 C (71.1 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-20.6 C (-5.1 F)
n/a
n/a
Apr
30.0 C (86.0 F)
-16.1 C (3.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-7.8 C (18.0 F)
n/a
n/a
Jun
33.9 C (93.0 F)
-1.7 C (28.9 F)
n/a
n/a
Jul
35.0 C (95.0 F)
1.1 C (34.0 F)
n/a
n/a
Aug
38.3 C (100.9 F)
1.1 C (34.0 F)
n/a
n/a
Sep
34.4 C (93.9 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
29.4 C (84.9 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-23.9 C (-11.0 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-28.3 C (-18.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Springs 1 SW still stand. 1930 holds the most, with 78.
Standing records at Springs 1 SW by the year they were set
Year set
Standing records
1917
61
1918
67
1919
43
1920
44
1921
39
1922
22
1923
50
1924
31
1925
58
1926
39
1927
55
1928
38
1929
50
1930
78
1931
38
1932
32
1933
22
1934
33
1935
21
1936
40
1937
30
1938
30
1939
32
1940
42
1941
35
1942
38
1943
33
1944
19
1946
22
1947
29
1948
21
1949
31
1950
41
1951
29
1952
19
1953
26
1954
26
1955
30
1956
31
1957
23
1958
16
All-Time Record Progression
1 new records
1 all-time records were set at Springs 1 SW between 15 October 1954 and 15 October 1954. Each dot is a new record.
When Springs 1 SW set new all-time records
Date
Kind
Detail
1954-10-15
Record daily precipitation
Record daily precipitation 131.1 mm (5.2 in)
Wettest Day of Each Month
Oct: 131.1 mm (5.2 in)
The wettest day on record for each calendar month at Springs 1 SW. The most was 131.1 mm (5.2 in) on 15 October 1954.
Record daily precipitation for each month at Springs 1 SW
Month
Record daily precipitation (mm)
Date
Jan
50.8 mm (2.0 in)
10 January 1937
Feb
44.7 mm (1.8 in)
13 February 1923
Mar
99.8 mm (3.9 in)
17 March 1936
Apr
58.4 mm (2.3 in)
12 April 1948
May
62.2 mm (2.4 in)
27 May 1956
Jun
88.9 mm (3.5 in)
29 June 1924
Jul
64.8 mm (2.6 in)
2 July 1931
Aug
97.8 mm (3.9 in)
26 August 1940
Sep
72.1 mm (2.8 in)
21 September 1950
Oct
131.1 mm (5.2 in)
15 October 1954
Nov
50.8 mm (2.0 in)
4 November 1936
Dec
52.8 mm (2.1 in)
14 December 1956
Period of Record Coverage
1917 to 1958
Complete yearUnder 90 percent of days
41 years of record at Springs 1 SW, 1917 to 1958. 9 years have data for under 90 percent of days and are left out of rankings: 1922, 1926, 1927, 1932, 1933, 1935, 1936, 1937 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 27 complete years at Springs 1 SW, 1918 to 1957. Blue stripes are years cooler than the station's own mean of 8.4 C (47.1 F); red stripes are warmer. The coolest year was 1940, at 6.8 C (44.2 F), and the warmest was 1921, at 10.6 C (51.1 F). The strongest colour marks a difference of 2.3 C (4.1 F).
Annual mean temperature at Springs 1 SW as warming stripes, 1918 to 1957
Year
Annual mean temperature
Difference from the station mean
1918
9.1 C
+0.70 C
1919
9.4 C
+1.02 C
1920
8.2 C
-0.24 C
1921
10.6 C
+2.21 C
1923
9.1 C
+0.65 C
1928
8.2 C
-0.21 C
1929
8.1 C
-0.32 C
1930
7.6 C
-0.79 C
1931
8.8 C
+0.37 C
1934
8.5 C
+0.11 C
1938
9.4 C
+1.00 C
1939
8.6 C
+0.23 C
1940
6.8 C
-1.61 C
1942
8.0 C
-0.38 C
1943
7.6 C
-0.80 C
1944
8.2 C
-0.20 C
1946
8.6 C
+0.23 C
1947
7.6 C
-0.77 C
1948
8.2 C
-0.25 C
1949
9.0 C
+0.59 C
1950
7.5 C
-0.93 C
1951
7.9 C
-0.49 C
1953
9.1 C
+0.66 C
1954
8.2 C
-0.20 C
1955
8.1 C
-0.28 C
1956
8.0 C
-0.42 C
1957
8.4 C
+0.04 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1917 to 1958
Yearly extremes at Springs 1 SW: 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)
1918
32.2 C (90.0 F)
41
Coldest night (TNn)
-30.6 C (-23.1 F)
1918
-23.9 C (-11.0 F)
41
Wettest day (Rx1day)
131.1 mm (5.2 in)
1954
54.6 mm (2.1 in)
41
Wettest five days (Rx5day)
164.4 mm (6.5 in)
1940
92.7 mm (3.6 in)
41
Longest dry spell (CDD)
32 days
1953
14 days
41
Hottest day (TXx)
The hottest day of the year at Springs 1 SW, 1917 to 1958. The record is 38.3 C (100.9 F) in 1918, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Springs 1 SW by year
Year
Hottest day (TXx)
1917
32.8 C (91.0 F)
1918
38.3 C (100.9 F)
1919
35.0 C (95.0 F)
1920
30.0 C (86.0 F)
1921
32.8 C (91.0 F)
1922
32.2 C (90.0 F)
1923
31.7 C (89.1 F)
1924
31.1 C (88.0 F)
1925
32.8 C (91.0 F)
1926
33.3 C (91.9 F)
1927
31.7 C (89.1 F)
1928
32.2 C (90.0 F)
1929
32.2 C (90.0 F)
1930
35.6 C (96.1 F)
1931
33.3 C (91.9 F)
1932
27.8 C (82.0 F)
1933
33.9 C (93.0 F)
1934
35.0 C (95.0 F)
1935
31.7 C (89.1 F)
1936
35.6 C (96.1 F)
1937
31.7 C (89.1 F)
1938
31.1 C (88.0 F)
1939
30.6 C (87.1 F)
1940
31.1 C (88.0 F)
1941
31.1 C (88.0 F)
1942
30.6 C (87.1 F)
1943
31.1 C (88.0 F)
1944
32.2 C (90.0 F)
1946
30.0 C (86.0 F)
1947
30.0 C (86.0 F)
1948
33.3 C (91.9 F)
1949
31.1 C (88.0 F)
1950
28.9 C (84.0 F)
1951
31.1 C (88.0 F)
1952
32.2 C (90.0 F)
1953
34.4 C (93.9 F)
1954
33.9 C (93.0 F)
1955
32.2 C (90.0 F)
1956
30.0 C (86.0 F)
1957
32.2 C (90.0 F)
1958
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Springs 1 SW, 1917 to 1958. The record is -30.6 C (-23.1 F) in 1918, marked on the chart; the median year is -23.9 C (-11.0 F).
Coldest night (TNn) at Springs 1 SW by year
Year
Coldest night (TNn)
1917
-28.3 C (-18.9 F)
1918
-30.6 C (-23.1 F)
1919
-25.0 C (-13.0 F)
1920
-21.1 C (-6.0 F)
1921
-24.4 C (-11.9 F)
1922
-23.9 C (-11.0 F)
1923
-18.3 C (-0.9 F)
1924
-18.9 C (-2.0 F)
1925
-26.7 C (-16.1 F)
1926
-23.9 C (-11.0 F)
1927
-17.8 C (0.0 F)
1928
-20.6 C (-5.1 F)
1929
-23.3 C (-9.9 F)
1930
-24.4 C (-11.9 F)
1931
-15.6 C (3.9 F)
1932
-17.8 C (0.0 F)
1933
-21.1 C (-6.0 F)
1934
-28.9 C (-20.0 F)
1935
-17.8 C (0.0 F)
1936
-30.0 C (-22.0 F)
1937
-18.9 C (-2.0 F)
1938
-17.8 C (0.0 F)
1939
-20.0 C (-4.0 F)
1940
-25.0 C (-13.0 F)
1941
-20.0 C (-4.0 F)
1942
-26.7 C (-16.1 F)
1943
-25.0 C (-13.0 F)
1944
-25.6 C (-14.1 F)
1946
-23.9 C (-11.0 F)
1947
-22.2 C (-8.0 F)
1948
-26.1 C (-15.0 F)
1949
-18.3 C (-0.9 F)
1950
-23.9 C (-11.0 F)
1951
-22.2 C (-8.0 F)
1952
-18.9 C (-2.0 F)
1953
-15.0 C (5.0 F)
1954
-23.9 C (-11.0 F)
1955
-26.7 C (-16.1 F)
1956
-20.0 C (-4.0 F)
1957
-24.4 C (-11.9 F)
1958
-26.1 C (-15.0 F)
Wettest day (Rx1day)
The wettest day of the year at Springs 1 SW, 1917 to 1958. The record is 131.1 mm (5.2 in) in 1954, marked on the chart; the median year is 54.6 mm (2.1 in).
Wettest day (Rx1day) at Springs 1 SW by year
Year
Wettest day (Rx1day)
1917
30.5 mm (1.2 in)
1918
31.0 mm (1.2 in)
1919
53.6 mm (2.1 in)
1920
39.4 mm (1.6 in)
1921
57.2 mm (2.3 in)
1922
35.8 mm (1.4 in)
1923
49.5 mm (1.9 in)
1924
88.9 mm (3.5 in)
1925
50.8 mm (2.0 in)
1926
56.4 mm (2.2 in)
1927
41.9 mm (1.6 in)
1928
54.6 mm (2.1 in)
1929
101.6 mm (4.0 in)
1930
62.2 mm (2.4 in)
1931
64.8 mm (2.6 in)
1932
45.7 mm (1.8 in)
1933
45.7 mm (1.8 in)
1934
50.8 mm (2.0 in)
1935
55.9 mm (2.2 in)
1936
99.8 mm (3.9 in)
1937
74.9 mm (2.9 in)
1938
60.2 mm (2.4 in)
1939
62.0 mm (2.4 in)
1940
97.8 mm (3.9 in)
1941
59.4 mm (2.3 in)
1942
53.6 mm (2.1 in)
1943
29.5 mm (1.2 in)
1944
48.8 mm (1.9 in)
1946
57.4 mm (2.3 in)
1947
58.9 mm (2.3 in)
1948
58.4 mm (2.3 in)
1949
47.2 mm (1.9 in)
1950
72.1 mm (2.8 in)
1951
54.6 mm (2.1 in)
1952
48.3 mm (1.9 in)
1953
31.8 mm (1.3 in)
1954
131.1 mm (5.2 in)
1955
69.6 mm (2.7 in)
1956
66.8 mm (2.6 in)
1957
53.3 mm (2.1 in)
1958
48.3 mm (1.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at Springs 1 SW, 1917 to 1958. The record is 164.4 mm (6.5 in) in 1940, marked on the chart; the median year is 92.7 mm (3.6 in).
Wettest five days (Rx5day) at Springs 1 SW by year
Year
Wettest five days (Rx5day)
1917
61.5 mm (2.4 in)
1918
84.4 mm (3.3 in)
1919
62.4 mm (2.5 in)
1920
104.4 mm (4.1 in)
1921
107.0 mm (4.2 in)
1922
52.4 mm (2.1 in)
1923
90.1 mm (3.5 in)
1924
134.9 mm (5.3 in)
1925
72.8 mm (2.9 in)
1926
141.1 mm (5.6 in)
1927
104.1 mm (4.1 in)
1928
85.0 mm (3.3 in)
1929
143.0 mm (5.6 in)
1930
73.3 mm (2.9 in)
1931
102.4 mm (4.0 in)
1932
83.7 mm (3.3 in)
1933
105.4 mm (4.1 in)
1934
101.6 mm (4.0 in)
1935
124.5 mm (4.9 in)
1936
92.7 mm (3.6 in)
1937
98.8 mm (3.9 in)
1938
97.5 mm (3.8 in)
1939
86.2 mm (3.4 in)
1940
164.4 mm (6.5 in)
1941
121.6 mm (4.8 in)
1942
87.7 mm (3.5 in)
1943
56.9 mm (2.2 in)
1944
70.6 mm (2.8 in)
1946
66.6 mm (2.6 in)
1947
85.1 mm (3.4 in)
1948
102.5 mm (4.0 in)
1949
82.4 mm (3.2 in)
1950
92.7 mm (3.6 in)
1951
111.2 mm (4.4 in)
1952
77.6 mm (3.1 in)
1953
77.2 mm (3.0 in)
1954
135.3 mm (5.3 in)
1955
108.5 mm (4.3 in)
1956
113.8 mm (4.5 in)
1957
74.9 mm (2.9 in)
1958
102.5 mm (4.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Springs 1 SW, 1917 to 1958. The record is 32 days in 1953, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Springs 1 SW by year
Year
Longest dry spell (CDD)
1917
22 days
1918
12 days
1919
11 days
1920
25 days
1921
13 days
1922
11 days
1923
26 days
1924
20 days
1925
13 days
1926
15 days
1927
17 days
1928
11 days
1929
18 days
1930
14 days
1931
13 days
1932
22 days
1933
11 days
1934
19 days
1935
14 days
1936
17 days
1937
13 days
1938
20 days
1939
15 days
1940
11 days
1941
23 days
1942
14 days
1943
14 days
1944
12 days
1946
10 days
1947
17 days
1948
10 days
1949
13 days
1950
11 days
1951
15 days
1952
12 days
1953
32 days
1954
13 days
1955
21 days
1956
13 days
1957
20 days
1958
8 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
27 years with a frost
Across 27 years with a frost, the median last spring frost at Springs 1 SW falls on 23 May and the median first autumn frost on 24 September, which leaves a median of 126 days between them.
Fitted over all years, the growing season changes by -1.7 days per decade at this station.
Frost dates and growing season at Springs 1 SW
Measure
Median, all years
Earliest period
Recent period (1918 to 1957)
Recent against earliest
Fitted trend
Last spring frost
23 May
n/a
23 May
n/a
-1.3 days per decade
First autumn frost
24 September
n/a
24 September
n/a
-3.1 days per decade
Growing days
126 days
n/a
126 days
n/a
-1.7 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
31 years, 1918 to 1957
A day with at least 54.8 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 128.2 mm (5.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Springs 1 SW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
54.8 mm (2.2 in)
5 years
71.0 mm (2.8 in)
10 years
83.0 mm (3.3 in)
25 years
99.7 mm (3.9 in)
50 years
113.4 mm (4.5 in)
Longer than the 31 years of record
100 years
128.2 mm (5.0 in)
Longer than the 31 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, 31 years of values from 1918 to 1957.
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: 131.1 mm (5.2 in) in 1954; 101.6 mm (4.0 in) in 1929; 97.8 mm (3.9 in) in 1940.
Download the Data
Data for Springs 1 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Springs 1 SW 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.