Record envelope, standing records and threshold days for Coudersport 4 NW (USC00361806), Pennsylvania, United States, with 31 years of record.
Key Facts for Coudersport 4 NW
Coudersport 4 NW (USC00361806) is a weather station in Pennsylvania, United States at 41.83 latitude and -78.07 longitude, 701 m (2,301 ft) above sea level.
The station reports from 1956 to 1986, 31 years of record.
1,464 records set at Coudersport 4 NW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Coudersport 4 NW tied a daily record snowfall of 2.5 cm (1.0 in) on 23 December 1986.
About the Station
Location: Pennsylvania, United States, 41.83 latitude, -78.07 longitude.
Elevation: 701 m (2,301 ft).
Period of record: 1956 to 1986, 31 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 Coudersport 4 NW. 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 Coudersport 4 NW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
12.8 C (55.0 F)
-31.7 C (-25.1 F)
n/a
n/a
Feb
18.3 C (64.9 F)
-33.3 C (-27.9 F)
n/a
n/a
Mar
27.8 C (82.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-17.8 C (0.0 F)
n/a
n/a
May
31.7 C (89.1 F)
-10.0 C (14.0 F)
n/a
n/a
Jun
32.2 C (90.0 F)
-3.3 C (26.1 F)
n/a
n/a
Jul
34.4 C (93.9 F)
-0.6 C (30.9 F)
n/a
n/a
Aug
32.8 C (91.0 F)
-2.8 C (27.0 F)
n/a
n/a
Sep
31.7 C (89.1 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
27.2 C (81.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
23.9 C (75.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
18.3 C (64.9 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 Coudersport 4 NW still stand. 1963 holds the most, with 73.
Standing records at Coudersport 4 NW by the year they were set
Year set
Standing records
1956
45
1957
57
1958
49
1959
61
1960
57
1961
48
1962
57
1963
73
1964
63
1965
60
1966
57
1967
44
1968
56
1969
33
1970
44
1971
36
1972
34
1973
54
1974
44
1975
44
1976
60
1977
54
1978
20
1979
57
1980
28
1981
31
1982
50
1983
24
1984
40
1985
40
1986
44
Wettest Day of Each Month
Jun: 97.3 mm (3.8 in)
The wettest day on record for each calendar month at Coudersport 4 NW. The most was 97.3 mm (3.8 in) on 23 June 1972.
Record daily precipitation for each month at Coudersport 4 NW
Month
Record daily precipitation (mm)
Date
Jan
42.9 mm (1.7 in)
22 January 1959
Feb
60.2 mm (2.4 in)
26 February 1961
Mar
41.9 mm (1.6 in)
31 March 1974
Apr
35.6 mm (1.4 in)
29 April 1981
May
55.4 mm (2.2 in)
23 May 1960
Jun
97.3 mm (3.8 in)
23 June 1972
Jul
51.3 mm (2.0 in)
31 July 1983
Aug
52.8 mm (2.1 in)
15 August 1980
Sep
87.1 mm (3.4 in)
29 September 1967
Oct
58.4 mm (2.3 in)
7 October 1959
Nov
45.0 mm (1.8 in)
30 November 1963
Dec
40.6 mm (1.6 in)
25 December 1978
Period of Record Coverage
1956 to 1986
Complete yearUnder 90 percent of days
31 years of record at Coudersport 4 NW, 1956 to 1986. 1 years have data for under 90 percent of days and are left out of rankings: 1956.
Cooler than the station meanWarmer than the station mean
One stripe for each of 29 complete years at Coudersport 4 NW, 1957 to 1986. Blue stripes are years cooler than the station's own mean of 6.6 C (44.0 F); red stripes are warmer. The coolest year was 1963, at 5.3 C (41.6 F), and the warmest was 1973, at 8.1 C (46.6 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Coudersport 4 NW as warming stripes, 1957 to 1986
Year
Annual mean temperature
Difference from the station mean
1957
6.7 C
+0.05 C
1958
5.4 C
-1.30 C
1959
6.9 C
+0.29 C
1960
5.8 C
-0.82 C
1961
6.4 C
-0.26 C
1962
5.5 C
-1.18 C
1963
5.3 C
-1.31 C
1964
6.5 C
-0.17 C
1965
6.4 C
-0.26 C
1966
6.3 C
-0.34 C
1968
6.1 C
-0.51 C
1969
6.0 C
-0.61 C
1970
6.4 C
-0.23 C
1971
7.4 C
+0.72 C
1972
6.4 C
-0.28 C
1973
8.1 C
+1.45 C
1974
7.2 C
+0.51 C
1975
7.6 C
+0.90 C
1976
6.3 C
-0.34 C
1977
7.0 C
+0.32 C
1978
6.1 C
-0.51 C
1979
6.7 C
+0.09 C
1980
6.2 C
-0.44 C
1981
6.8 C
+0.17 C
1982
7.1 C
+0.41 C
1983
7.3 C
+0.66 C
1984
7.6 C
+0.98 C
1985
7.4 C
+0.79 C
1986
7.8 C
+1.16 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
1956 to 1986
Yearly extremes at Coudersport 4 NW: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
34.4 C (93.9 F)
1966
31.7 C (89.1 F)
31
Coldest night (TNn)
-33.3 C (-27.9 F)
1963
-28.3 C (-18.9 F)
31
Wettest day (Rx1day)
97.3 mm (3.8 in)
1972
52.8 mm (2.1 in)
31
Wettest five days (Rx5day)
257.6 mm (10.1 in)
1972
77.0 mm (3.0 in)
31
Longest dry spell (CDD)
27 days
1963
13 days
31
Hottest day (TXx)
The hottest day of the year at Coudersport 4 NW, 1956 to 1986. The record is 34.4 C (93.9 F) in 1966, marked on the chart; the median year is 31.7 C (89.1 F).
Hottest day (TXx) at Coudersport 4 NW by year
Year
Hottest day (TXx)
1956
31.7 C (89.1 F)
1957
32.2 C (90.0 F)
1958
28.9 C (84.0 F)
1959
32.2 C (90.0 F)
1960
29.4 C (84.9 F)
1961
32.2 C (90.0 F)
1962
31.1 C (88.0 F)
1963
32.2 C (90.0 F)
1964
31.7 C (89.1 F)
1965
31.7 C (89.1 F)
1966
34.4 C (93.9 F)
1967
32.8 C (91.0 F)
1968
30.6 C (87.1 F)
1969
30.6 C (87.1 F)
1970
29.4 C (84.9 F)
1971
32.2 C (90.0 F)
1972
31.1 C (88.0 F)
1973
32.8 C (91.0 F)
1974
30.6 C (87.1 F)
1975
31.7 C (89.1 F)
1976
30.6 C (87.1 F)
1977
31.7 C (89.1 F)
1978
31.1 C (88.0 F)
1979
31.7 C (89.1 F)
1980
32.2 C (90.0 F)
1981
31.1 C (88.0 F)
1982
30.6 C (87.1 F)
1983
32.8 C (91.0 F)
1984
31.7 C (89.1 F)
1985
31.7 C (89.1 F)
1986
32.8 C (91.0 F)
Coldest night (TNn)
The coldest night of the year at Coudersport 4 NW, 1956 to 1986. The record is -33.3 C (-27.9 F) in 1963, marked on the chart; the median year is -28.3 C (-18.9 F).
Coldest night (TNn) at Coudersport 4 NW by year
Year
Coldest night (TNn)
1956
-18.3 C (-0.9 F)
1957
-31.7 C (-25.1 F)
1958
-29.4 C (-20.9 F)
1959
-25.0 C (-13.0 F)
1960
-30.6 C (-23.1 F)
1961
-28.9 C (-20.0 F)
1962
-28.3 C (-18.9 F)
1963
-33.3 C (-27.9 F)
1964
-26.7 C (-16.1 F)
1965
-31.7 C (-25.1 F)
1966
-27.8 C (-18.0 F)
1967
-28.3 C (-18.9 F)
1968
-28.3 C (-18.9 F)
1969
-26.1 C (-15.0 F)
1970
-28.9 C (-20.0 F)
1971
-24.4 C (-11.9 F)
1972
-23.3 C (-9.9 F)
1973
-24.4 C (-11.9 F)
1974
-21.1 C (-6.0 F)
1975
-20.6 C (-5.1 F)
1976
-24.4 C (-11.9 F)
1977
-26.7 C (-16.1 F)
1978
-21.1 C (-6.0 F)
1979
-28.9 C (-20.0 F)
1980
-28.9 C (-20.0 F)
1981
-28.3 C (-18.9 F)
1982
-30.6 C (-23.1 F)
1983
-25.6 C (-14.1 F)
1984
-30.0 C (-22.0 F)
1985
-31.7 C (-25.1 F)
1986
-23.3 C (-9.9 F)
Wettest day (Rx1day)
The wettest day of the year at Coudersport 4 NW, 1956 to 1986. The record is 97.3 mm (3.8 in) in 1972, marked on the chart; the median year is 52.8 mm (2.1 in).
Wettest day (Rx1day) at Coudersport 4 NW by year
Year
Wettest day (Rx1day)
1956
35.1 mm (1.4 in)
1957
33.3 mm (1.3 in)
1958
52.1 mm (2.1 in)
1959
58.4 mm (2.3 in)
1960
55.4 mm (2.2 in)
1961
60.2 mm (2.4 in)
1962
53.1 mm (2.1 in)
1963
45.0 mm (1.8 in)
1964
42.4 mm (1.7 in)
1965
40.6 mm (1.6 in)
1966
38.9 mm (1.5 in)
1967
87.1 mm (3.4 in)
1968
33.5 mm (1.3 in)
1969
52.6 mm (2.1 in)
1970
60.2 mm (2.4 in)
1971
50.8 mm (2.0 in)
1972
97.3 mm (3.8 in)
1973
53.8 mm (2.1 in)
1974
64.3 mm (2.5 in)
1975
58.9 mm (2.3 in)
1976
40.6 mm (1.6 in)
1977
56.6 mm (2.2 in)
1978
43.9 mm (1.7 in)
1979
50.5 mm (2.0 in)
1980
52.8 mm (2.1 in)
1981
56.4 mm (2.2 in)
1982
62.2 mm (2.4 in)
1983
51.3 mm (2.0 in)
1984
53.3 mm (2.1 in)
1985
43.4 mm (1.7 in)
1986
69.9 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Coudersport 4 NW, 1956 to 1986. The record is 257.6 mm (10.1 in) in 1972, marked on the chart; the median year is 77.0 mm (3.0 in).
Wettest five days (Rx5day) at Coudersport 4 NW by year
Year
Wettest five days (Rx5day)
1956
79.2 mm (3.1 in)
1957
54.8 mm (2.2 in)
1958
93.0 mm (3.7 in)
1959
79.3 mm (3.1 in)
1960
89.0 mm (3.5 in)
1961
78.7 mm (3.1 in)
1962
90.2 mm (3.6 in)
1963
54.9 mm (2.2 in)
1964
58.2 mm (2.3 in)
1965
60.7 mm (2.4 in)
1966
59.7 mm (2.4 in)
1967
106.9 mm (4.2 in)
1968
53.8 mm (2.1 in)
1969
69.6 mm (2.7 in)
1970
72.9 mm (2.9 in)
1971
53.3 mm (2.1 in)
1972
257.6 mm (10.1 in)
1973
87.1 mm (3.4 in)
1974
76.7 mm (3.0 in)
1975
85.6 mm (3.4 in)
1976
83.8 mm (3.3 in)
1977
85.0 mm (3.3 in)
1978
105.9 mm (4.2 in)
1979
57.3 mm (2.3 in)
1980
77.0 mm (3.0 in)
1981
101.9 mm (4.0 in)
1982
72.3 mm (2.8 in)
1983
66.6 mm (2.6 in)
1984
73.6 mm (2.9 in)
1985
64.7 mm (2.5 in)
1986
122.2 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Coudersport 4 NW, 1956 to 1986. The record is 27 days in 1963, marked on the chart; the median year is 13 days.
Longest dry spell (CDD) at Coudersport 4 NW by year
Year
Longest dry spell (CDD)
1956
14 days
1957
23 days
1958
12 days
1959
10 days
1960
13 days
1961
11 days
1962
23 days
1963
27 days
1964
24 days
1965
10 days
1966
13 days
1967
10 days
1968
10 days
1969
17 days
1970
16 days
1971
16 days
1972
11 days
1973
15 days
1974
12 days
1975
13 days
1976
9 days
1977
14 days
1978
14 days
1979
9 days
1980
20 days
1981
13 days
1982
11 days
1983
16 days
1984
11 days
1985
13 days
1986
11 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
29 years with a frost
Across 29 years with a frost, the median last spring frost at Coudersport 4 NW falls on 3 June and the median first autumn frost on 12 September, which leaves a median of 108 days between them.
Fitted over all years, the growing season changes by +17.9 days per decade at this station.
Frost dates and growing season at Coudersport 4 NW
Measure
Median, all years
Earliest period
Recent period (1957 to 1986)
Recent against earliest
Fitted trend
Last spring frost
3 June
n/a
3 June
n/a
-8.0 days per decade
First autumn frost
12 September
n/a
12 September
n/a
+9.9 days per decade
Growing days
108 days
n/a
108 days
n/a
+17.9 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
30 years, 1957 to 1986
A day with at least 51.8 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 95.5 mm (3.8 in) of rain is expected about once in 100 years.
Rainfall return levels at Coudersport 4 NW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.8 mm (2.0 in)
5 years
63.6 mm (2.5 in)
10 years
71.3 mm (2.8 in)
25 years
81.1 mm (3.2 in)
50 years
88.4 mm (3.5 in)
Longer than the 30 years of record
100 years
95.5 mm (3.8 in)
Longer than the 30 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, 30 years of values from 1957 to 1986.
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: 97.3 mm (3.8 in) in 1972; 87.1 mm (3.4 in) in 1967; 69.9 mm (2.8 in) in 1986.
Download the Data
Data for Coudersport 4 NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Coudersport 4 NW 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.