Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Casement. The lines show the 2026 daily maximum and minimum. 4 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Casement, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
14.2 C (57.6 F)
-12.4 C (9.7 F)
12.3 C (54.1 F)
-6.3 C (20.7 F)
Feb
15.9 C (60.6 F)
-8.0 C (17.6 F)
13.1 C (55.6 F)
-3.2 C (26.2 F)
Mar
19.8 C (67.6 F)
-8.4 C (16.9 F)
17.6 C (63.7 F)
-3.2 C (26.2 F)
Apr
22.7 C (72.9 F)
-5.9 C (21.4 F)
13.1 C (55.6 F)
0.3 C (32.5 F)
May
24.9 C (76.8 F)
-3.6 C (25.5 F)
18.4 C (65.1 F)
-0.2 C (31.6 F)
Jun
27.6 C (81.7 F)
0.2 C (32.4 F)
18.9 C (66.0 F)
5.5 C (41.9 F)
Jul
31.0 C (87.8 F)
2.8 C (37.0 F)
21.3 C (70.3 F)
8.7 C (47.7 F)
Aug
29.5 C (85.1 F)
2.2 C (36.0 F)
24.0 C (75.2 F)
8.5 C (47.3 F)
Sep
25.4 C (77.7 F)
-1.2 C (29.8 F)
n/a
n/a
Oct
20.2 C (68.4 F)
-3.0 C (26.6 F)
n/a
n/a
Nov
17.7 C (63.9 F)
-8.9 C (16.0 F)
n/a
n/a
Dec
14.5 C (58.1 F)
-12.0 C (10.4 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Casement still stand. 2010 holds the most, with 78.
Standing records at Casement by the year they were set
Year set
Standing records
1987
66
1988
29
1989
52
1990
29
1991
49
1992
36
1993
30
1994
42
1995
65
1996
47
1997
45
1998
45
1999
42
2000
41
2001
37
2002
34
2003
39
2004
42
2006
55
2007
46
2008
41
2009
46
2010
78
2011
62
2012
37
2013
68
2014
17
2015
35
2016
23
2017
36
2018
27
2019
13
2020
14
2021
16
2022
21
2023
20
2024
19
2025
20
Wettest Day of Each Month
Dec: 90.9 mm (3.6 in)
The wettest day on record for each calendar month at Casement. The most was 90.9 mm (3.6 in) on 6 December 2007.
Record daily precipitation for each month at Casement
Month
Record daily precipitation (mm)
Date
Jan
23.1 mm (0.9 in)
25 January 1995
Feb
41.9 mm (1.6 in)
2 February 2009
Mar
38.1 mm (1.5 in)
13 March 1994
Apr
33.0 mm (1.3 in)
9 April 1998
May
38.1 mm (1.5 in)
27 May 2017
Jun
72.9 mm (2.9 in)
11 June 1993
Jul
33.0 mm (1.3 in)
28 July 1988
Aug
43.9 mm (1.7 in)
5 August 2007
Sep
41.9 mm (1.6 in)
5 September 2008
Oct
86.9 mm (3.4 in)
24 October 2011
Nov
64.0 mm (2.5 in)
6 November 2000
Dec
90.9 mm (3.6 in)
6 December 2007
Period of Record Coverage
1987 to 2025
Complete yearUnder 90 percent of days
38 years of record at Casement, 1987 to 2025. 33 years have data for under 90 percent of days and are left out of rankings: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 and others.
Yearly extremes at Casement: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
31.0 C (87.8 F)
2006
25.0 C (77.0 F)
38
Coldest night (TNn)
-12.4 C (9.7 F)
2010
-5.5 C (22.1 F)
38
Wettest day (Rx1day)
90.9 mm (3.6 in)
2007
34.6 mm (1.4 in)
38
Wettest five days (Rx5day)
146.3 mm (5.8 in)
1993
54.8 mm (2.2 in)
32
Longest dry spell (CDD)
18 days
2017
8 days
38
Hottest day (TXx)
The hottest day of the year at Casement, 1987 to 2025. The record is 31.0 C (87.8 F) in 2006, marked on the chart; the median year is 25.0 C (77.0 F).
Hottest day (TXx) at Casement by year
Year
Hottest day (TXx)
1987
25.9 C (78.6 F)
1988
22.9 C (73.2 F)
1989
28.0 C (82.4 F)
1990
29.5 C (85.1 F)
1991
25.8 C (78.4 F)
1992
24.7 C (76.5 F)
1993
22.8 C (73.0 F)
1994
25.1 C (77.2 F)
1995
28.8 C (83.8 F)
1996
25.7 C (78.3 F)
1997
24.7 C (76.5 F)
1998
25.3 C (77.5 F)
1999
26.7 C (80.1 F)
2000
27.6 C (81.7 F)
2001
26.6 C (79.9 F)
2002
23.2 C (73.8 F)
2003
27.4 C (81.3 F)
2004
25.7 C (78.3 F)
2006
31.0 C (87.8 F)
2007
23.2 C (73.8 F)
2008
23.3 C (73.9 F)
2009
24.9 C (76.8 F)
2010
24.9 C (76.8 F)
2011
24.4 C (75.9 F)
2012
23.1 C (73.6 F)
2013
28.5 C (83.3 F)
2014
24.8 C (76.6 F)
2015
25.4 C (77.7 F)
2016
25.6 C (78.1 F)
2017
27.4 C (81.3 F)
2018
26.2 C (79.2 F)
2019
21.6 C (70.9 F)
2020
17.5 C (63.5 F)
2021
21.6 C (70.9 F)
2022
24.2 C (75.6 F)
2023
24.4 C (75.9 F)
2024
23.1 C (73.6 F)
2025
24.0 C (75.2 F)
Coldest night (TNn)
The coldest night of the year at Casement, 1987 to 2025. The record is -12.4 C (9.7 F) in 2010, marked on the chart; the median year is -5.5 C (22.1 F).
Coldest night (TNn) at Casement by year
Year
Coldest night (TNn)
1987
-7.3 C (18.9 F)
1988
-5.1 C (22.8 F)
1989
-4.2 C (24.4 F)
1990
-3.6 C (25.5 F)
1991
-8.0 C (17.6 F)
1992
-10.0 C (14.0 F)
1993
-4.7 C (23.5 F)
1994
-5.5 C (22.1 F)
1995
-5.5 C (22.1 F)
1996
-5.9 C (21.4 F)
1997
-3.8 C (25.2 F)
1998
-5.5 C (22.1 F)
1999
-7.0 C (19.4 F)
2000
-7.1 C (19.2 F)
2001
-8.4 C (16.9 F)
2002
-5.5 C (22.1 F)
2003
-4.1 C (24.6 F)
2004
-6.8 C (19.8 F)
2006
-7.5 C (18.5 F)
2007
-5.1 C (22.8 F)
2008
-4.9 C (23.2 F)
2009
-5.3 C (22.5 F)
2010
-12.4 C (9.7 F)
2011
-5.3 C (22.5 F)
2012
-4.6 C (23.7 F)
2013
-5.9 C (21.4 F)
2014
-4.8 C (23.4 F)
2015
-5.0 C (23.0 F)
2016
-5.5 C (22.1 F)
2017
-6.6 C (20.1 F)
2018
-5.1 C (22.8 F)
2019
-3.4 C (25.9 F)
2020
-4.3 C (24.3 F)
2021
-4.7 C (23.5 F)
2022
-6.1 C (21.0 F)
2023
-6.0 C (21.2 F)
2024
-6.1 C (21.0 F)
2025
-6.3 C (20.7 F)
Wettest day (Rx1day)
The wettest day of the year at Casement, 1987 to 2025. The record is 90.9 mm (3.6 in) in 2007, marked on the chart; the median year is 34.6 mm (1.4 in).
Wettest day (Rx1day) at Casement by year
Year
Wettest day (Rx1day)
1987
45.0 mm (1.8 in)
1988
33.0 mm (1.3 in)
1989
33.0 mm (1.3 in)
1990
31.0 mm (1.2 in)
1991
31.0 mm (1.2 in)
1992
18.0 mm (0.7 in)
1993
72.9 mm (2.9 in)
1994
38.1 mm (1.5 in)
1995
33.0 mm (1.3 in)
1996
55.9 mm (2.2 in)
1997
23.9 mm (0.9 in)
1998
40.9 mm (1.6 in)
1999
38.9 mm (1.5 in)
2000
64.0 mm (2.5 in)
2001
21.8 mm (0.9 in)
2002
47.0 mm (1.9 in)
2003
41.9 mm (1.6 in)
2004
42.4 mm (1.7 in)
2006
36.1 mm (1.4 in)
2007
90.9 mm (3.6 in)
2008
41.9 mm (1.6 in)
2009
41.9 mm (1.6 in)
2010
52.1 mm (2.1 in)
2011
86.9 mm (3.4 in)
2012
31.8 mm (1.3 in)
2013
25.9 mm (1.0 in)
2014
43.9 mm (1.7 in)
2015
37.1 mm (1.5 in)
2016
26.9 mm (1.1 in)
2017
41.9 mm (1.6 in)
2018
21.1 mm (0.8 in)
2019
5.3 mm (0.21 in)
2020
15.0 mm (0.6 in)
2021
6.1 mm (0.24 in)
2022
17.0 mm (0.7 in)
2023
4.1 mm (0.16 in)
2024
14.0 mm (0.6 in)
2025
3.0 mm (0.12 in)
Wettest five days (Rx5day)
The wettest five days of the year at Casement, 1987 to 2025. The record is 146.3 mm (5.8 in) in 1993, marked on the chart; the median year is 54.8 mm (2.2 in).
Wettest five days (Rx5day) at Casement by year
Year
Wettest five days (Rx5day)
1987
53.4 mm (2.1 in)
1988
45.6 mm (1.8 in)
1989
36.3 mm (1.4 in)
1990
36.4 mm (1.4 in)
1991
41.7 mm (1.6 in)
1992
25.7 mm (1.0 in)
1993
146.3 mm (5.8 in)
1994
57.4 mm (2.3 in)
1995
73.1 mm (2.9 in)
1996
59.7 mm (2.4 in)
1997
34.0 mm (1.3 in)
1998
54.1 mm (2.1 in)
1999
77.2 mm (3.0 in)
2000
66.2 mm (2.6 in)
2001
50.3 mm (2.0 in)
2002
76.9 mm (3.0 in)
2003
66.7 mm (2.6 in)
2004
70.1 mm (2.8 in)
2006
50.3 mm (2.0 in)
2007
110.0 mm (4.3 in)
2008
71.9 mm (2.8 in)
2009
84.6 mm (3.3 in)
2010
68.3 mm (2.7 in)
2011
49.0 mm (1.9 in)
2012
63.3 mm (2.5 in)
2013
45.9 mm (1.8 in)
2014
75.8 mm (3.0 in)
2015
55.4 mm (2.2 in)
2016
49.2 mm (1.9 in)
2017
49.8 mm (2.0 in)
2018
41.4 mm (1.6 in)
2019
n/a
2020
n/a
2021
n/a
2022
32.3 mm (1.3 in)
2023
n/a
2024
n/a
2025
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Casement, 1987 to 2025. The record is 18 days in 2017, marked on the chart; the median year is 8 days.
Longest dry spell (CDD) at Casement by year
Year
Longest dry spell (CDD)
1987
8 days
1988
8 days
1989
6 days
1990
11 days
1991
9 days
1992
6 days
1993
14 days
1994
11 days
1995
8 days
1996
9 days
1997
14 days
1998
11 days
1999
5 days
2000
4 days
2001
1 day
2002
9 days
2003
9 days
2004
9 days
2006
9 days
2007
8 days
2008
13 days
2009
6 days
2010
10 days
2011
8 days
2012
6 days
2013
6 days
2014
8 days
2015
9 days
2016
16 days
2017
18 days
2018
10 days
2019
1 day
2020
1 day
2021
1 day
2022
14 days
2023
1 day
2024
1 day
2025
1 day
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.
Download the Data
Data for Casement standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Casement 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.