Record envelope, standing records and threshold days for Chalk Hill 2 ENE (USC00361350), Pennsylvania, United States, with 41 years of record.
Key Facts for Chalk Hill 2 ENE
Chalk Hill 2 ENE (USC00361350) is a weather station in Pennsylvania, United States at 39.85 latitude and -79.59 longitude, 604 m (1,980 ft) above sea level.
The station reports from 1977 to 2017, 41 years of record.
1,464 records set at Chalk Hill 2 ENE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Chalk Hill 2 ENE tied a daily record snowfall of 2.5 cm (1.0 in) on 20 November 2017.
About the Station
Location: Pennsylvania, United States, 39.85 latitude, -79.59 longitude.
Elevation: 604 m (1,980 ft).
Period of record: 1977 to 2017, 41 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 Chalk Hill 2 ENE. 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 Chalk Hill 2 ENE, 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)
-32.8 C (-27.0 F)
n/a
n/a
Feb
23.9 C (75.0 F)
-30.0 C (-22.0 F)
n/a
n/a
Mar
28.3 C (82.9 F)
-25.6 C (-14.1 F)
n/a
n/a
Apr
30.6 C (87.1 F)
-13.9 C (7.0 F)
n/a
n/a
May
35.0 C (95.0 F)
-6.7 C (19.9 F)
n/a
n/a
Jun
33.3 C (91.9 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
35.0 C (95.0 F)
2.8 C (37.0 F)
n/a
n/a
Aug
32.8 C (91.0 F)
0.0 C (32.0 F)
n/a
n/a
Sep
31.1 C (88.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
28.3 C (82.9 F)
-7.8 C (18.0 F)
n/a
n/a
Nov
25.0 C (77.0 F)
-16.7 C (1.9 F)
n/a
n/a
Dec
22.8 C (73.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Chalk Hill 2 ENE still stand. 1979 holds the most, with 58.
Standing records at Chalk Hill 2 ENE by the year they were set
Year set
Standing records
1977
27
1978
47
1979
58
1980
37
1981
40
1982
44
1983
35
1984
56
1985
43
1986
48
1987
21
1988
55
1989
53
1990
47
1991
37
1992
31
1993
28
1994
29
1995
30
1996
29
1997
34
1998
46
1999
28
2000
32
2001
37
2002
44
2003
20
2004
29
2005
24
2006
37
2007
37
2008
29
2009
35
2010
37
2011
22
2012
38
2013
43
2014
57
2016
13
2017
27
All-Time Record Progression
2 new records
2 all-time records were set at Chalk Hill 2 ENE between 21 August 2007 and 28 February 2010. Each dot is a new record.
When Chalk Hill 2 ENE set new all-time records
Date
Kind
Detail
2007-08-21
Record daily precipitation
Record daily precipitation 117.9 mm (4.6 in)
2010-02-28
Record snow depth
Record snow depth 101.6 cm (40.0 in)
Wettest Day of Each Month
Aug: 117.9 mm (4.6 in)
The wettest day on record for each calendar month at Chalk Hill 2 ENE. The most was 117.9 mm (4.6 in) on 21 August 2007.
Record daily precipitation for each month at Chalk Hill 2 ENE
Month
Record daily precipitation (mm)
Date
Jan
56.9 mm (2.2 in)
12 January 2005
Feb
52.8 mm (2.1 in)
5 February 1986
Mar
55.6 mm (2.2 in)
29 March 2005
Apr
53.3 mm (2.1 in)
13 April 1981
May
52.8 mm (2.1 in)
29 May 1984
Jun
59.9 mm (2.4 in)
29 June 2007
Jul
81.0 mm (3.2 in)
19 July 1996
Aug
117.9 mm (4.6 in)
21 August 2007
Sep
86.4 mm (3.4 in)
13 September 1978
Oct
100.6 mm (4.0 in)
30 October 2012
Nov
73.7 mm (2.9 in)
27 November 1985
Dec
52.8 mm (2.1 in)
3 December 1991
Period of Record Coverage
1977 to 2017
Complete yearUnder 90 percent of days
40 years of record at Chalk Hill 2 ENE, 1977 to 2017. 4 years have data for under 90 percent of days and are left out of rankings: 1977, 2013, 2016, 2017.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at Chalk Hill 2 ENE, 1978 to 2014. Blue stripes are years cooler than the station's own mean of 9.1 C (48.4 F); red stripes are warmer. The coolest year was 2014, at 7.3 C (45.1 F), and the warmest was 1998, at 11.2 C (52.1 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Chalk Hill 2 ENE as warming stripes, 1978 to 2014
Year
Annual mean temperature
Difference from the station mean
1978
8.1 C
-1.02 C
1979
8.5 C
-0.61 C
1980
8.4 C
-0.70 C
1981
8.3 C
-0.81 C
1982
9.2 C
+0.09 C
1983
8.4 C
-0.72 C
1984
8.9 C
-0.18 C
1985
9.1 C
+0.05 C
1986
9.6 C
+0.53 C
1987
9.5 C
+0.39 C
1988
8.9 C
-0.20 C
1989
8.6 C
-0.46 C
1990
10.0 C
+0.91 C
1991
10.0 C
+0.91 C
1992
8.7 C
-0.41 C
1993
9.1 C
+0.00 C
1994
9.2 C
+0.06 C
1995
9.1 C
+0.01 C
1996
8.9 C
-0.18 C
1997
9.1 C
+0.00 C
1998
11.2 C
+2.09 C
1999
9.8 C
+0.72 C
2000
9.0 C
-0.09 C
2001
9.8 C
+0.71 C
2002
10.1 C
+1.03 C
2004
9.5 C
+0.39 C
2005
9.4 C
+0.32 C
2006
10.1 C
+1.05 C
2007
9.7 C
+0.61 C
2008
9.2 C
+0.07 C
2009
7.7 C
-1.37 C
2010
7.8 C
-1.33 C
2011
8.7 C
-0.35 C
2012
9.3 C
+0.20 C
2014
7.3 C
-1.82 C
The fitted trend in annual mean temperature here over 1978 to 2014 is 0.05 C (-0.21 to 0.31) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.4 to 0.6) 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 Chalk Hill 2 ENE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.05 C (-0.21 to 0.31) per decade
0.1 F (-0.4 to 0.6) per decade
1978 to 2014
35
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.1 F (-0.2 to 0.5) per decade
1978 to 2014
35
Not clearly different from zero
Mean daily minimum
0.01 C (-0.36 to 0.38) per decade
0.02 F (-0.64 to 0.68) per decade
1978 to 2014
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
1977 to 2017
Yearly extremes at Chalk Hill 2 ENE: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
35.0 C (95.0 F)
2001
30.9 C (87.5 F)
40
Coldest night (TNn)
-32.8 C (-27.0 F)
1994
-23.3 C (-9.9 F)
40
Wettest day (Rx1day)
117.9 mm (4.6 in)
2007
54.9 mm (2.2 in)
40
Wettest five days (Rx5day)
152.0 mm (6.0 in)
2007
93.1 mm (3.7 in)
40
Longest dry spell (CDD)
32 days
1988
12 days
40
Hottest day (TXx)
The hottest day of the year at Chalk Hill 2 ENE, 1977 to 2017. The record is 35.0 C (95.0 F) in 2001, marked on the chart; the median year is 30.9 C (87.5 F).
Hottest day (TXx) at Chalk Hill 2 ENE by year
Year
Hottest day (TXx)
1977
31.7 C (89.1 F)
1978
30.6 C (87.1 F)
1979
30.6 C (87.1 F)
1980
32.2 C (90.0 F)
1981
30.0 C (86.0 F)
1982
29.4 C (84.9 F)
1983
31.7 C (89.1 F)
1984
29.4 C (84.9 F)
1985
30.0 C (86.0 F)
1986
30.6 C (87.1 F)
1987
31.7 C (89.1 F)
1988
34.4 C (93.9 F)
1989
30.0 C (86.0 F)
1990
30.0 C (86.0 F)
1991
30.0 C (86.0 F)
1992
27.8 C (82.0 F)
1993
31.7 C (89.1 F)
1994
31.1 C (88.0 F)
1995
34.4 C (93.9 F)
1996
31.7 C (89.1 F)
1997
31.7 C (89.1 F)
1998
31.1 C (88.0 F)
1999
32.2 C (90.0 F)
2000
29.4 C (84.9 F)
2001
35.0 C (95.0 F)
2002
30.6 C (87.1 F)
2003
27.8 C (82.0 F)
2004
27.8 C (82.0 F)
2005
31.1 C (88.0 F)
2006
31.1 C (88.0 F)
2007
30.0 C (86.0 F)
2008
30.0 C (86.0 F)
2009
30.0 C (86.0 F)
2010
30.6 C (87.1 F)
2011
32.8 C (91.0 F)
2012
35.0 C (95.0 F)
2013
32.2 C (90.0 F)
2014
31.1 C (88.0 F)
2016
31.1 C (88.0 F)
2017
29.4 C (84.9 F)
Coldest night (TNn)
The coldest night of the year at Chalk Hill 2 ENE, 1977 to 2017. The record is -32.8 C (-27.0 F) in 1994, marked on the chart; the median year is -23.3 C (-9.9 F).
Coldest night (TNn) at Chalk Hill 2 ENE by year
Year
Coldest night (TNn)
1977
-20.0 C (-4.0 F)
1978
-26.1 C (-15.0 F)
1979
-30.0 C (-22.0 F)
1980
-25.0 C (-13.0 F)
1981
-25.0 C (-13.0 F)
1982
-29.4 C (-20.9 F)
1983
-26.7 C (-16.1 F)
1984
-28.9 C (-20.0 F)
1985
-29.4 C (-20.9 F)
1986
-22.8 C (-9.0 F)
1987
-21.7 C (-7.1 F)
1988
-23.9 C (-11.0 F)
1989
-27.2 C (-17.0 F)
1990
-21.1 C (-6.0 F)
1991
-20.0 C (-4.0 F)
1992
-21.1 C (-6.0 F)
1993
-23.3 C (-9.9 F)
1994
-32.8 C (-27.0 F)
1995
-21.7 C (-7.1 F)
1996
-26.1 C (-15.0 F)
1997
-25.6 C (-14.1 F)
1998
-17.8 C (0.0 F)
1999
-20.6 C (-5.1 F)
2000
-22.2 C (-8.0 F)
2001
-19.4 C (-2.9 F)
2002
-19.4 C (-2.9 F)
2003
-25.0 C (-13.0 F)
2004
-25.6 C (-14.1 F)
2005
-23.3 C (-9.9 F)
2006
-22.2 C (-8.0 F)
2007
-23.9 C (-11.0 F)
2008
-21.7 C (-7.1 F)
2009
-30.6 C (-23.1 F)
2010
-22.8 C (-9.0 F)
2011
-26.1 C (-15.0 F)
2012
-19.4 C (-2.9 F)
2013
-20.6 C (-5.1 F)
2014
-27.2 C (-17.0 F)
2016
-17.8 C (0.0 F)
2017
-20.6 C (-5.1 F)
Wettest day (Rx1day)
The wettest day of the year at Chalk Hill 2 ENE, 1977 to 2017. The record is 117.9 mm (4.6 in) in 2007, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at Chalk Hill 2 ENE by year
Year
Wettest day (Rx1day)
1977
39.4 mm (1.6 in)
1978
86.4 mm (3.4 in)
1979
39.6 mm (1.6 in)
1980
48.3 mm (1.9 in)
1981
53.3 mm (2.1 in)
1982
46.5 mm (1.8 in)
1983
42.4 mm (1.7 in)
1984
52.8 mm (2.1 in)
1985
73.7 mm (2.9 in)
1986
56.4 mm (2.2 in)
1987
45.5 mm (1.8 in)
1988
38.1 mm (1.5 in)
1989
40.9 mm (1.6 in)
1990
73.7 mm (2.9 in)
1991
59.7 mm (2.4 in)
1992
58.2 mm (2.3 in)
1993
61.0 mm (2.4 in)
1994
62.0 mm (2.4 in)
1995
44.5 mm (1.8 in)
1996
81.0 mm (3.2 in)
1997
51.1 mm (2.0 in)
1998
43.9 mm (1.7 in)
1999
61.2 mm (2.4 in)
2000
59.7 mm (2.4 in)
2001
43.2 mm (1.7 in)
2002
57.9 mm (2.3 in)
2003
50.8 mm (2.0 in)
2004
69.1 mm (2.7 in)
2005
56.9 mm (2.2 in)
2006
51.3 mm (2.0 in)
2007
117.9 mm (4.6 in)
2008
62.7 mm (2.5 in)
2009
50.3 mm (2.0 in)
2010
50.3 mm (2.0 in)
2011
57.9 mm (2.3 in)
2012
100.6 mm (4.0 in)
2013
50.8 mm (2.0 in)
2014
94.7 mm (3.7 in)
2016
50.8 mm (2.0 in)
2017
57.4 mm (2.3 in)
Wettest five days (Rx5day)
The wettest five days of the year at Chalk Hill 2 ENE, 1977 to 2017. The record is 152.0 mm (6.0 in) in 2007, marked on the chart; the median year is 93.1 mm (3.7 in).
Wettest five days (Rx5day) at Chalk Hill 2 ENE by year
Year
Wettest five days (Rx5day)
1977
53.8 mm (2.1 in)
1978
104.1 mm (4.1 in)
1979
78.7 mm (3.1 in)
1980
75.2 mm (3.0 in)
1981
116.6 mm (4.6 in)
1982
93.5 mm (3.7 in)
1983
82.6 mm (3.3 in)
1984
79.5 mm (3.1 in)
1985
133.6 mm (5.3 in)
1986
122.7 mm (4.8 in)
1987
73.5 mm (2.9 in)
1988
77.8 mm (3.1 in)
1989
83.5 mm (3.3 in)
1990
96.6 mm (3.8 in)
1991
101.9 mm (4.0 in)
1992
121.7 mm (4.8 in)
1993
97.1 mm (3.8 in)
1994
107.2 mm (4.2 in)
1995
83.4 mm (3.3 in)
1996
123.5 mm (4.9 in)
1997
89.2 mm (3.5 in)
1998
65.7 mm (2.6 in)
1999
92.7 mm (3.6 in)
2000
87.1 mm (3.4 in)
2001
70.3 mm (2.8 in)
2002
96.8 mm (3.8 in)
2003
103.2 mm (4.1 in)
2004
115.0 mm (4.5 in)
2005
95.3 mm (3.8 in)
2006
75.7 mm (3.0 in)
2007
152.0 mm (6.0 in)
2008
108.7 mm (4.3 in)
2009
91.9 mm (3.6 in)
2010
67.4 mm (2.7 in)
2011
84.1 mm (3.3 in)
2012
149.6 mm (5.9 in)
2013
88.5 mm (3.5 in)
2014
115.0 mm (4.5 in)
2016
58.4 mm (2.3 in)
2017
122.4 mm (4.8 in)
Longest dry spell (CDD)
The longest dry spell of the year at Chalk Hill 2 ENE, 1977 to 2017. The record is 32 days in 1988, marked on the chart; the median year is 12 days.
Longest dry spell (CDD) at Chalk Hill 2 ENE by year
Year
Longest dry spell (CDD)
1977
10 days
1978
11 days
1979
9 days
1980
13 days
1981
12 days
1982
11 days
1983
13 days
1984
11 days
1985
13 days
1986
8 days
1987
12 days
1988
32 days
1989
11 days
1990
12 days
1991
21 days
1992
10 days
1993
12 days
1994
13 days
1995
31 days
1996
10 days
1997
14 days
1998
11 days
1999
17 days
2000
11 days
2001
10 days
2002
17 days
2003
12 days
2004
12 days
2005
15 days
2006
11 days
2007
11 days
2008
19 days
2009
12 days
2010
14 days
2011
7 days
2012
10 days
2013
10 days
2014
8 days
2016
11 days
2017
10 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 Chalk Hill 2 ENE falls on 12 May and the median first autumn frost on 5 October, which leaves a median of 143 days between them.
Fitted over all years, the growing season changes by +4.5 days per decade at this station.
Frost dates and growing season at Chalk Hill 2 ENE
Measure
Median, all years
Earliest period
Recent period (1983 to 2014)
Recent against earliest
Fitted trend
Last spring frost
12 May
n/a
12 May
n/a
-1.8 days per decade
First autumn frost
5 October
n/a
7 October
n/a
+2.7 days per decade
Growing days
143 days
n/a
146 days
n/a
+4.5 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
33 years, 1978 to 2010
A day with at least 53.4 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 117.8 mm (4.6 in) of rain is expected about once in 100 years.
Rainfall return levels at Chalk Hill 2 ENE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
53.4 mm (2.1 in)
5 years
66.4 mm (2.6 in)
10 years
76.5 mm (3.0 in)
25 years
91.2 mm (3.6 in)
50 years
103.8 mm (4.1 in)
Longer than the 33 years of record
100 years
117.8 mm (4.6 in)
Longer than the 33 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, 33 years of values from 1978 to 2010.
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: 117.9 mm (4.6 in) in 2007; 86.4 mm (3.4 in) in 1978; 81.0 mm (3.2 in) in 1996.
Download the Data
Data for Chalk Hill 2 ENE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chalk Hill 2 ENE 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.