Record envelope, standing records and threshold days for Mt Wx (USC00445851), Virginia, United States, with 103 years of record.
Key Facts for Mt Wx
Mt Wx (USC00445851) is a weather station in Virginia, United States at 39.06 latitude and -77.89 longitude, 506 m (1,659 ft) above sea level.
The station reports from 1915 to 2017, 103 years of record.
1,464 records set at Mt Wx still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mt Wx set a daily record high minimum temperature of 18.9 C (66.0 F) on 11 October 2017.
About the Station
Location: Virginia, United States, 39.06 latitude, -77.89 longitude.
Elevation: 506 m (1,659 ft).
Period of record: 1915 to 2017, 103 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 Mt Wx. 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 Mt Wx, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
23.3 C (73.9 F)
-26.1 C (-15.0 F)
n/a
n/a
Feb
24.4 C (75.9 F)
-22.8 C (-9.0 F)
n/a
n/a
Mar
28.9 C (84.0 F)
-19.4 C (-2.9 F)
n/a
n/a
Apr
32.8 C (91.0 F)
-14.4 C (6.1 F)
n/a
n/a
May
33.9 C (93.0 F)
-5.0 C (23.0 F)
n/a
n/a
Jun
36.7 C (98.1 F)
3.3 C (37.9 F)
n/a
n/a
Jul
37.8 C (100.0 F)
3.9 C (39.0 F)
n/a
n/a
Aug
37.2 C (99.0 F)
5.0 C (41.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
-2.8 C (27.0 F)
n/a
n/a
Oct
33.3 C (91.9 F)
-7.2 C (19.0 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-15.6 C (3.9 F)
n/a
n/a
Dec
23.9 C (75.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Mt Wx still stand. 1925 holds the most, with 32.
Standing records at Mt Wx by the year they were set
Year set
Standing records
1915
16
1916
13
1917
31
1918
24
1919
14
1920
13
1921
19
1922
12
1923
14
1924
15
1925
32
1926
20
1927
24
1928
13
1929
10
1930
25
1931
10
1932
20
1933
19
1934
13
1935
8
1936
17
1937
7
1938
11
1939
8
1940
9
1941
19
1942
9
1943
12
1944
12
1945
19
1946
8
1947
19
1948
6
1949
4
1950
22
1951
23
1952
11
1953
14
1954
26
1955
3
1956
18
1957
9
1958
9
1959
12
1960
13
1961
12
1962
10
1963
17
1964
12
1965
11
1966
16
1967
12
1968
6
1969
11
1970
13
1971
14
1972
26
1973
6
1974
16
1975
12
1976
25
1977
9
1978
7
1979
26
1980
12
1981
9
1982
15
1983
19
1984
15
1985
14
1986
12
1987
4
1988
30
1989
23
1990
20
1991
31
1992
8
1993
10
1994
13
1995
4
1996
17
1997
20
1998
25
1999
12
2000
15
2001
13
2002
19
2003
10
2004
4
2005
4
2006
11
2007
14
2008
6
2009
10
2010
22
2011
10
2012
11
2013
5
2014
8
2015
20
2016
12
2017
11
All-Time Record Progression
9 new records
9 all-time records were set at Mt Wx between 22 June 1972 and 6 February 2010. Each dot is a new record.
When Mt Wx set new all-time records
Date
Kind
Detail
1972-06-22
Record daily precipitation
Record daily precipitation 194.8 mm (7.7 in)
1982-01-17
Record low minimum temperature
Record low minimum temperature -25.6 C (-14.1 F)
1982-01-18
Record low minimum temperature
Record low minimum temperature -26.1 C (-15.0 F)
1983-02-12
Record snow depth
Record snow depth 81.3 cm (32.0 in)
1985-01-21
Record low maximum temperature
Record low maximum temperature -17.8 C (0.0 F)
1996-01-08
Record snow depth
Record snow depth 88.9 cm (35.0 in)
1996-01-09
Record snow depth
Record snow depth 91.4 cm (36.0 in)
1996-01-12
Record snow depth
Record snow depth 101.6 cm (40.0 in)
2010-02-06
Record daily snowfall
Record daily snowfall 68.6 cm (27.0 in)
Wettest Day of Each Month
Jun: 194.8 mm (7.7 in)
The wettest day on record for each calendar month at Mt Wx. The most was 194.8 mm (7.7 in) on 22 June 1972.
Record daily precipitation for each month at Mt Wx
Month
Record daily precipitation (mm)
Date
Jan
100.3 mm (3.9 in)
31 January 2013
Feb
88.9 mm (3.5 in)
22 February 2001
Mar
82.6 mm (3.3 in)
29 March 1984
Apr
115.6 mm (4.6 in)
22 April 1992
May
106.7 mm (4.2 in)
12 May 2008
Jun
194.8 mm (7.7 in)
22 June 1972
Jul
102.6 mm (4.0 in)
6 July 2017
Aug
141.0 mm (5.6 in)
24 August 1979
Sep
139.7 mm (5.5 in)
29 September 2004
Oct
159.3 mm (6.3 in)
22 October 1929
Nov
120.1 mm (4.7 in)
7 November 1963
Dec
120.1 mm (4.7 in)
2 December 1974
Period of Record Coverage
1915 to 2017
Complete yearUnder 90 percent of days
103 years of record at Mt Wx, 1915 to 2017. 7 years have data for under 90 percent of days and are left out of rankings: 1938, 1948, 1956, 2003, 2004, 2005, 2017.
Cooler than the station meanWarmer than the station mean
One stripe for each of 86 complete years at Mt Wx, 1915 to 2016. Blue stripes are years cooler than the station's own mean of 10.8 C (51.4 F); red stripes are warmer. The coolest year was 1917, at 9.2 C (48.5 F), and the warmest was 2012, at 12.6 C (54.7 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Mt Wx as warming stripes, 1915 to 2016
Year
Annual mean temperature
Difference from the station mean
1915
10.3 C
-0.47 C
1916
10.4 C
-0.41 C
1917
9.2 C
-1.60 C
1918
10.5 C
-0.30 C
1919
11.0 C
+0.20 C
1920
9.9 C
-0.89 C
1921
11.9 C
+1.15 C
1923
10.6 C
-0.16 C
1924
9.5 C
-1.31 C
1925
11.0 C
+0.25 C
1926
9.9 C
-0.85 C
1927
11.1 C
+0.32 C
1929
10.9 C
+0.13 C
1930
11.3 C
+0.56 C
1931
11.7 C
+0.92 C
1933
11.5 C
+0.76 C
1935
10.3 C
-0.45 C
1936
11.1 C
+0.38 C
1939
11.0 C
+0.27 C
1940
9.2 C
-1.52 C
1941
10.4 C
-0.32 C
1942
10.2 C
-0.54 C
1943
9.9 C
-0.86 C
1944
10.0 C
-0.75 C
1945
10.0 C
-0.77 C
1946
11.2 C
+0.39 C
1947
10.0 C
-0.80 C
1949
11.0 C
+0.20 C
1950
9.4 C
-1.39 C
1951
10.1 C
-0.68 C
1952
10.9 C
+0.10 C
1953
11.3 C
+0.57 C
1954
10.6 C
-0.20 C
1957
11.8 C
+0.99 C
1958
10.3 C
-0.44 C
1959
12.2 C
+1.45 C
1960
10.8 C
-0.01 C
1961
10.9 C
+0.18 C
1963
10.9 C
+0.09 C
1964
11.4 C
+0.62 C
1965
11.4 C
+0.64 C
1967
10.5 C
-0.29 C
1968
10.8 C
+0.08 C
1969
9.7 C
-1.06 C
1970
10.4 C
-0.41 C
1971
10.3 C
-0.47 C
1972
9.8 C
-0.98 C
1973
10.9 C
+0.12 C
1974
10.4 C
-0.35 C
1975
10.4 C
-0.32 C
1976
10.0 C
-0.75 C
1977
10.6 C
-0.12 C
1978
9.6 C
-1.19 C
1979
9.7 C
-1.03 C
1980
10.1 C
-0.63 C
1981
9.7 C
-1.04 C
1982
10.4 C
-0.40 C
1983
10.5 C
-0.24 C
1984
10.7 C
-0.11 C
1985
10.8 C
+0.07 C
1986
10.7 C
-0.02 C
1987
11.1 C
+0.29 C
1988
10.5 C
-0.28 C
1989
10.3 C
-0.47 C
1990
12.1 C
+1.36 C
1991
12.3 C
+1.49 C
1992
10.1 C
-0.70 C
1994
10.9 C
+0.16 C
1995
10.4 C
-0.36 C
1996
9.7 C
-1.09 C
1998
11.9 C
+1.13 C
1999
11.5 C
+0.71 C
2000
10.6 C
-0.19 C
2001
11.3 C
+0.58 C
2002
11.5 C
+0.71 C
2004
10.7 C
-0.04 C
2006
12.6 C
+1.82 C
2007
12.1 C
+1.35 C
2009
11.1 C
+0.38 C
2010
12.1 C
+1.37 C
2011
12.2 C
+1.43 C
2012
12.6 C
+1.83 C
2013
11.0 C
+0.19 C
2014
10.3 C
-0.47 C
2015
11.5 C
+0.74 C
2016
12.3 C
+1.55 C
The annual mean temperature here has risen by 0.09 C (0.04 to 0.15) per decade over 1915 to 2016. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 86 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Mt Wx
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.09 C (0.04 to 0.15) per decade
0.2 F (0.1 to 0.3) per decade
1915 to 2016
86
Rise
Mean daily maximum
0.05 C (-0.02 to 0.12) per decade
0.09 F (-0.03 to 0.21) per decade
1915 to 2016
86
Not clearly different from zero
Mean daily minimum
0.1 C (0.1 to 0.2) per decade
0.2 F (0.1 to 0.3) per decade
1915 to 2016
86
Rise
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
1915 to 2017
Yearly extremes at Mt Wx: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
37.8 C (100.0 F)
1936
33.3 C (91.9 F)
103
Coldest night (TNn)
-26.1 C (-15.0 F)
1982
-17.2 C (1.0 F)
103
Wettest day (Rx1day)
194.8 mm (7.7 in)
1972
70.1 mm (2.8 in)
103
Wettest five days (Rx5day)
316.2 mm (12.4 in)
1942
104.1 mm (4.1 in)
103
Longest dry spell (CDD)
44 days
1930
20 days
103
Hottest day (TXx)
The hottest day of the year at Mt Wx, 1915 to 2017. The record is 37.8 C (100.0 F) in 1936, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Mt Wx by year
Year
Hottest day (TXx)
1915
32.8 C (91.0 F)
1916
32.8 C (91.0 F)
1917
32.8 C (91.0 F)
1918
37.2 C (99.0 F)
1919
34.4 C (93.9 F)
1920
30.6 C (87.1 F)
1921
31.1 C (88.0 F)
1922
30.6 C (87.1 F)
1923
32.8 C (91.0 F)
1924
32.8 C (91.0 F)
1925
35.0 C (95.0 F)
1926
36.7 C (98.1 F)
1927
32.8 C (91.0 F)
1928
31.1 C (88.0 F)
1929
32.2 C (90.0 F)
1930
36.1 C (97.0 F)
1931
36.7 C (98.1 F)
1932
35.6 C (96.1 F)
1933
34.4 C (93.9 F)
1934
34.4 C (93.9 F)
1935
32.8 C (91.0 F)
1936
37.8 C (100.0 F)
1937
31.7 C (89.1 F)
1938
32.8 C (91.0 F)
1939
33.3 C (91.9 F)
1940
33.3 C (91.9 F)
1941
33.3 C (91.9 F)
1942
33.3 C (91.9 F)
1943
33.3 C (91.9 F)
1944
33.3 C (91.9 F)
1945
33.9 C (93.0 F)
1946
33.9 C (93.0 F)
1947
32.2 C (90.0 F)
1948
34.4 C (93.9 F)
1949
33.3 C (91.9 F)
1950
29.4 C (84.9 F)
1951
34.4 C (93.9 F)
1952
35.0 C (95.0 F)
1953
36.7 C (98.1 F)
1954
36.7 C (98.1 F)
1955
35.0 C (95.0 F)
1956
33.3 C (91.9 F)
1957
34.4 C (93.9 F)
1958
31.7 C (89.1 F)
1959
35.0 C (95.0 F)
1960
31.7 C (89.1 F)
1961
30.6 C (87.1 F)
1962
33.3 C (91.9 F)
1963
32.8 C (91.0 F)
1964
32.8 C (91.0 F)
1965
33.3 C (91.9 F)
1966
34.4 C (93.9 F)
1967
31.1 C (88.0 F)
1968
33.3 C (91.9 F)
1969
32.2 C (90.0 F)
1970
31.7 C (89.1 F)
1971
30.6 C (87.1 F)
1972
31.1 C (88.0 F)
1973
31.7 C (89.1 F)
1974
30.6 C (87.1 F)
1975
32.8 C (91.0 F)
1976
32.2 C (90.0 F)
1977
35.0 C (95.0 F)
1978
32.2 C (90.0 F)
1979
31.1 C (88.0 F)
1980
34.4 C (93.9 F)
1981
31.1 C (88.0 F)
1982
31.1 C (88.0 F)
1983
35.0 C (95.0 F)
1984
32.2 C (90.0 F)
1985
32.8 C (91.0 F)
1986
33.9 C (93.0 F)
1987
35.0 C (95.0 F)
1988
37.2 C (99.0 F)
1989
33.9 C (93.0 F)
1990
33.9 C (93.0 F)
1991
35.0 C (95.0 F)
1992
33.3 C (91.9 F)
1993
33.9 C (93.0 F)
1994
32.8 C (91.0 F)
1995
33.3 C (91.9 F)
1996
32.8 C (91.0 F)
1997
33.3 C (91.9 F)
1998
32.8 C (91.0 F)
1999
36.1 C (97.0 F)
2000
31.1 C (88.0 F)
2001
32.2 C (90.0 F)
2002
32.8 C (91.0 F)
2003
32.8 C (91.0 F)
2004
31.7 C (89.1 F)
2005
32.2 C (90.0 F)
2006
35.0 C (95.0 F)
2007
34.4 C (93.9 F)
2008
33.3 C (91.9 F)
2009
32.2 C (90.0 F)
2010
35.6 C (96.1 F)
2011
36.1 C (97.0 F)
2012
35.0 C (95.0 F)
2013
31.7 C (89.1 F)
2014
31.7 C (89.1 F)
2015
31.7 C (89.1 F)
2016
34.4 C (93.9 F)
2017
31.1 C (88.0 F)
Coldest night (TNn)
The coldest night of the year at Mt Wx, 1915 to 2017. The record is -26.1 C (-15.0 F) in 1982, marked on the chart; the median year is -17.2 C (1.0 F).
Coldest night (TNn) at Mt Wx by year
Year
Coldest night (TNn)
1915
-12.8 C (9.0 F)
1916
-17.2 C (1.0 F)
1917
-23.3 C (-9.9 F)
1918
-22.8 C (-9.0 F)
1919
-16.7 C (1.9 F)
1920
-18.9 C (-2.0 F)
1921
-15.6 C (3.9 F)
1922
-18.9 C (-2.0 F)
1923
-16.7 C (1.9 F)
1924
-18.9 C (-2.0 F)
1925
-21.1 C (-6.0 F)
1926
-17.8 C (0.0 F)
1927
-17.8 C (0.0 F)
1928
-17.2 C (1.0 F)
1929
-18.3 C (-0.9 F)
1930
-17.8 C (0.0 F)
1931
-11.1 C (12.0 F)
1932
-16.7 C (1.9 F)
1933
-17.8 C (0.0 F)
1934
-17.8 C (0.0 F)
1935
-16.1 C (3.0 F)
1936
-18.9 C (-2.0 F)
1937
-13.3 C (8.1 F)
1938
-13.3 C (8.1 F)
1939
-13.9 C (7.0 F)
1940
-20.6 C (-5.1 F)
1941
-15.0 C (5.0 F)
1942
-20.6 C (-5.1 F)
1943
-18.9 C (-2.0 F)
1944
-15.6 C (3.9 F)
1945
-17.2 C (1.0 F)
1946
-14.4 C (6.1 F)
1947
-16.7 C (1.9 F)
1948
-15.0 C (5.0 F)
1949
-12.2 C (10.0 F)
1950
-15.6 C (3.9 F)
1951
-18.9 C (-2.0 F)
1952
-11.1 C (12.0 F)
1953
-11.7 C (10.9 F)
1954
-15.0 C (5.0 F)
1955
-17.8 C (0.0 F)
1956
-15.6 C (3.9 F)
1957
-18.9 C (-2.0 F)
1958
-21.1 C (-6.0 F)
1959
-16.7 C (1.9 F)
1960
-16.7 C (1.9 F)
1961
-20.6 C (-5.1 F)
1962
-18.9 C (-2.0 F)
1963
-22.2 C (-8.0 F)
1964
-17.2 C (1.0 F)
1965
-17.8 C (0.0 F)
1966
-19.4 C (-2.9 F)
1967
-16.7 C (1.9 F)
1968
-18.3 C (-0.9 F)
1969
-15.6 C (3.9 F)
1970
-20.0 C (-4.0 F)
1971
-16.7 C (1.9 F)
1972
-22.2 C (-8.0 F)
1973
-20.0 C (-4.0 F)
1974
-12.8 C (9.0 F)
1975
-14.4 C (6.1 F)
1976
-17.8 C (0.0 F)
1977
-23.3 C (-9.9 F)
1978
-19.4 C (-2.9 F)
1979
-19.4 C (-2.9 F)
1980
-19.4 C (-2.9 F)
1981
-18.3 C (-0.9 F)
1982
-26.1 C (-15.0 F)
1983
-22.2 C (-8.0 F)
1984
-20.0 C (-4.0 F)
1985
-24.4 C (-11.9 F)
1986
-16.7 C (1.9 F)
1987
-20.0 C (-4.0 F)
1988
-17.2 C (1.0 F)
1989
-19.4 C (-2.9 F)
1990
-15.6 C (3.9 F)
1991
-14.4 C (6.1 F)
1992
-15.6 C (3.9 F)
1993
-16.7 C (1.9 F)
1994
-26.1 C (-15.0 F)
1995
-19.4 C (-2.9 F)
1996
-20.0 C (-4.0 F)
1997
-17.8 C (0.0 F)
1998
-17.8 C (0.0 F)
1999
-13.9 C (7.0 F)
2000
-16.1 C (3.0 F)
2001
-10.6 C (12.9 F)
2002
-12.2 C (10.0 F)
2003
-23.3 C (-9.9 F)
2004
-17.8 C (0.0 F)
2005
-15.6 C (3.9 F)
2006
-14.4 C (6.1 F)
2007
-16.1 C (3.0 F)
2008
-13.3 C (8.1 F)
2009
-16.7 C (1.9 F)
2010
-12.2 C (10.0 F)
2011
-13.9 C (7.0 F)
2012
-12.8 C (9.0 F)
2013
-13.3 C (8.1 F)
2014
-19.4 C (-2.9 F)
2015
-19.4 C (-2.9 F)
2016
-15.6 C (3.9 F)
2017
-14.4 C (6.1 F)
Wettest day (Rx1day)
The wettest day of the year at Mt Wx, 1915 to 2017. The record is 194.8 mm (7.7 in) in 1972, marked on the chart; the median year is 70.1 mm (2.8 in).
Wettest day (Rx1day) at Mt Wx by year
Year
Wettest day (Rx1day)
1915
97.5 mm (3.8 in)
1916
94.0 mm (3.7 in)
1917
67.8 mm (2.7 in)
1918
81.3 mm (3.2 in)
1919
40.6 mm (1.6 in)
1920
40.9 mm (1.6 in)
1921
80.0 mm (3.1 in)
1922
81.3 mm (3.2 in)
1923
68.3 mm (2.7 in)
1924
110.5 mm (4.4 in)
1925
46.2 mm (1.8 in)
1926
106.9 mm (4.2 in)
1927
83.8 mm (3.3 in)
1928
56.9 mm (2.2 in)
1929
159.3 mm (6.3 in)
1930
51.8 mm (2.0 in)
1931
45.7 mm (1.8 in)
1932
85.9 mm (3.4 in)
1933
132.6 mm (5.2 in)
1934
103.4 mm (4.1 in)
1935
69.1 mm (2.7 in)
1936
60.7 mm (2.4 in)
1937
78.5 mm (3.1 in)
1938
44.7 mm (1.8 in)
1939
64.8 mm (2.6 in)
1940
44.7 mm (1.8 in)
1941
50.8 mm (2.0 in)
1942
134.6 mm (5.3 in)
1943
77.5 mm (3.1 in)
1944
52.6 mm (2.1 in)
1945
91.4 mm (3.6 in)
1946
83.8 mm (3.3 in)
1947
88.9 mm (3.5 in)
1948
69.9 mm (2.8 in)
1949
40.6 mm (1.6 in)
1950
71.9 mm (2.8 in)
1951
55.9 mm (2.2 in)
1952
65.8 mm (2.6 in)
1953
48.3 mm (1.9 in)
1954
100.6 mm (4.0 in)
1955
50.8 mm (2.0 in)
1956
32.0 mm (1.3 in)
1957
66.0 mm (2.6 in)
1958
47.5 mm (1.9 in)
1959
87.1 mm (3.4 in)
1960
76.2 mm (3.0 in)
1961
51.3 mm (2.0 in)
1962
54.1 mm (2.1 in)
1963
120.1 mm (4.7 in)
1964
64.5 mm (2.5 in)
1965
38.9 mm (1.5 in)
1966
110.2 mm (4.3 in)
1967
50.8 mm (2.0 in)
1968
48.3 mm (1.9 in)
1969
42.9 mm (1.7 in)
1970
77.7 mm (3.1 in)
1971
51.1 mm (2.0 in)
1972
194.8 mm (7.7 in)
1973
66.0 mm (2.6 in)
1974
120.1 mm (4.7 in)
1975
65.0 mm (2.6 in)
1976
104.6 mm (4.1 in)
1977
48.3 mm (1.9 in)
1978
55.9 mm (2.2 in)
1979
141.0 mm (5.6 in)
1980
53.8 mm (2.1 in)
1981
37.1 mm (1.5 in)
1982
33.8 mm (1.3 in)
1983
49.8 mm (2.0 in)
1984
83.1 mm (3.3 in)
1985
52.1 mm (2.1 in)
1986
40.6 mm (1.6 in)
1987
44.5 mm (1.8 in)
1988
65.5 mm (2.6 in)
1989
81.3 mm (3.2 in)
1990
59.4 mm (2.3 in)
1991
36.1 mm (1.4 in)
1992
115.6 mm (4.6 in)
1993
95.3 mm (3.8 in)
1994
73.9 mm (2.9 in)
1995
81.3 mm (3.2 in)
1996
71.1 mm (2.8 in)
1997
56.1 mm (2.2 in)
1998
94.2 mm (3.7 in)
1999
96.5 mm (3.8 in)
2000
76.2 mm (3.0 in)
2001
130.3 mm (5.1 in)
2002
66.0 mm (2.6 in)
2003
101.6 mm (4.0 in)
2004
139.7 mm (5.5 in)
2005
92.7 mm (3.6 in)
2006
111.0 mm (4.4 in)
2007
61.0 mm (2.4 in)
2008
106.7 mm (4.2 in)
2009
70.1 mm (2.8 in)
2010
69.6 mm (2.7 in)
2011
68.6 mm (2.7 in)
2012
113.0 mm (4.4 in)
2013
100.3 mm (3.9 in)
2014
82.6 mm (3.3 in)
2015
101.6 mm (4.0 in)
2016
70.6 mm (2.8 in)
2017
102.6 mm (4.0 in)
Wettest five days (Rx5day)
The wettest five days of the year at Mt Wx, 1915 to 2017. The record is 316.2 mm (12.4 in) in 1942, marked on the chart; the median year is 104.1 mm (4.1 in).
Wettest five days (Rx5day) at Mt Wx by year
Year
Wettest five days (Rx5day)
1915
147.3 mm (5.8 in)
1916
86.0 mm (3.4 in)
1917
84.8 mm (3.3 in)
1918
176.0 mm (6.9 in)
1919
73.0 mm (2.9 in)
1920
81.1 mm (3.2 in)
1921
128.0 mm (5.0 in)
1922
85.1 mm (3.4 in)
1923
131.8 mm (5.2 in)
1924
176.5 mm (6.9 in)
1925
72.9 mm (2.9 in)
1926
136.4 mm (5.4 in)
1927
123.2 mm (4.9 in)
1928
69.1 mm (2.7 in)
1929
159.8 mm (6.3 in)
1930
63.0 mm (2.5 in)
1931
68.3 mm (2.7 in)
1932
148.4 mm (5.8 in)
1933
209.3 mm (8.2 in)
1934
132.9 mm (5.2 in)
1935
126.3 mm (5.0 in)
1936
79.8 mm (3.1 in)
1937
178.8 mm (7.0 in)
1938
68.6 mm (2.7 in)
1939
95.9 mm (3.8 in)
1940
69.8 mm (2.7 in)
1941
145.2 mm (5.7 in)
1942
316.2 mm (12.4 in)
1943
86.9 mm (3.4 in)
1944
76.0 mm (3.0 in)
1945
142.4 mm (5.6 in)
1946
131.3 mm (5.2 in)
1947
110.5 mm (4.4 in)
1948
95.6 mm (3.8 in)
1949
88.5 mm (3.5 in)
1950
128.0 mm (5.0 in)
1951
88.1 mm (3.5 in)
1952
148.9 mm (5.9 in)
1953
68.6 mm (2.7 in)
1954
113.7 mm (4.5 in)
1955
98.9 mm (3.9 in)
1956
73.6 mm (2.9 in)
1957
95.7 mm (3.8 in)
1958
57.6 mm (2.3 in)
1959
135.7 mm (5.3 in)
1960
104.1 mm (4.1 in)
1961
79.7 mm (3.1 in)
1962
61.4 mm (2.4 in)
1963
178.4 mm (7.0 in)
1964
76.2 mm (3.0 in)
1965
50.0 mm (2.0 in)
1966
142.5 mm (5.6 in)
1967
93.5 mm (3.7 in)
1968
83.0 mm (3.3 in)
1969
84.9 mm (3.3 in)
1970
106.7 mm (4.2 in)
1971
88.9 mm (3.5 in)
1972
252.7 mm (9.9 in)
1973
85.4 mm (3.4 in)
1974
127.5 mm (5.0 in)
1975
144.1 mm (5.7 in)
1976
154.4 mm (6.1 in)
1977
92.5 mm (3.6 in)
1978
120.1 mm (4.7 in)
1979
172.7 mm (6.8 in)
1980
102.6 mm (4.0 in)
1981
70.1 mm (2.8 in)
1982
84.4 mm (3.3 in)
1983
97.3 mm (3.8 in)
1984
171.6 mm (6.8 in)
1985
99.3 mm (3.9 in)
1986
59.0 mm (2.3 in)
1987
99.7 mm (3.9 in)
1988
102.4 mm (4.0 in)
1989
125.0 mm (4.9 in)
1990
125.9 mm (5.0 in)
1991
56.5 mm (2.2 in)
1992
131.5 mm (5.2 in)
1993
96.3 mm (3.8 in)
1994
98.3 mm (3.9 in)
1995
153.6 mm (6.0 in)
1996
116.3 mm (4.6 in)
1997
103.9 mm (4.1 in)
1998
109.4 mm (4.3 in)
1999
145.6 mm (5.7 in)
2000
77.0 mm (3.0 in)
2001
145.6 mm (5.7 in)
2002
76.0 mm (3.0 in)
2003
188.0 mm (7.4 in)
2004
155.7 mm (6.1 in)
2005
113.0 mm (4.4 in)
2006
189.3 mm (7.5 in)
2007
85.4 mm (3.4 in)
2008
160.8 mm (6.3 in)
2009
88.4 mm (3.5 in)
2010
161.8 mm (6.4 in)
2011
96.4 mm (3.8 in)
2012
148.6 mm (5.9 in)
2013
119.4 mm (4.7 in)
2014
88.7 mm (3.5 in)
2015
153.7 mm (6.1 in)
2016
135.4 mm (5.3 in)
2017
132.8 mm (5.2 in)
Longest dry spell (CDD)
The longest dry spell of the year at Mt Wx, 1915 to 2017. The record is 44 days in 1930, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Mt Wx by year
Year
Longest dry spell (CDD)
1915
22 days
1916
13 days
1917
22 days
1918
21 days
1919
19 days
1920
26 days
1921
21 days
1922
25 days
1923
15 days
1924
26 days
1925
14 days
1926
14 days
1927
15 days
1928
17 days
1929
18 days
1930
44 days
1931
21 days
1932
15 days
1933
34 days
1934
19 days
1935
15 days
1936
22 days
1937
19 days
1938
20 days
1939
29 days
1940
21 days
1941
28 days
1942
17 days
1943
34 days
1944
36 days
1945
35 days
1946
21 days
1947
20 days
1948
10 days
1949
18 days
1950
15 days
1951
22 days
1952
29 days
1953
21 days
1954
11 days
1955
21 days
1956
26 days
1957
14 days
1958
23 days
1959
14 days
1960
20 days
1961
14 days
1962
18 days
1963
32 days
1964
29 days
1965
30 days
1966
19 days
1967
21 days
1968
27 days
1969
17 days
1970
17 days
1971
25 days
1972
13 days
1973
17 days
1974
18 days
1975
12 days
1976
15 days
1977
25 days
1978
18 days
1979
15 days
1980
14 days
1981
18 days
1982
15 days
1983
19 days
1984
22 days
1985
26 days
1986
21 days
1987
34 days
1988
20 days
1989
14 days
1990
20 days
1991
23 days
1992
17 days
1993
20 days
1994
16 days
1995
37 days
1996
12 days
1997
12 days
1998
21 days
1999
22 days
2000
22 days
2001
38 days
2002
23 days
2003
14 days
2004
21 days
2005
17 days
2006
39 days
2007
21 days
2008
16 days
2009
15 days
2010
24 days
2011
19 days
2012
16 days
2013
15 days
2014
11 days
2015
14 days
2016
12 days
2017
23 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
86 years with a frost
Across 86 years with a frost, the median last spring frost at Mt Wx falls on 19 April and the median first autumn frost on 24 October, which leaves a median of 188 days between them.
In 1982 to 2016 the median growing season was 194 days. That is 10 days more than in 1915 to 1951.
Fitted over all years, the growing season changes by +1.4 days per decade at this station.
Frost dates and growing season at Mt Wx
Measure
Median, all years
Earliest period (1915 to 1951)
Recent period (1982 to 2016)
Recent against earliest
Fitted trend
Last spring frost
19 April
21 April
13 April
8 days earlier
-0.6 days per decade
First autumn frost
24 October
24 October
29 October
5 days later
+0.8 days per decade
Growing days
188 days
184 days
194 days
10 days more
+1.4 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
82 years, 1917 to 2016
A day with at least 68.4 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 176.6 mm (7.0 in) of rain is expected about once in 100 years.
Rainfall return levels at Mt Wx: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
68.4 mm (2.7 in)
5 years
94.5 mm (3.7 in)
10 years
113.0 mm (4.4 in)
25 years
137.5 mm (5.4 in)
50 years
156.7 mm (6.2 in)
100 years
176.6 mm (7.0 in)
Longer than the 82 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, 82 years of values from 1917 to 2016.
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: 194.8 mm (7.7 in) in 1972; 159.3 mm (6.3 in) in 1929; 141.0 mm (5.6 in) in 1979.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Mt Wx, at 1982. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1982 ran 0.4 C (0.8 F) higher than in the years before (likely change).
Suspected changes in the annual mean temperature at Mt Wx, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1982
+0.4
+0.8
likely
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Mt Wx standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mt Wx 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.