Record envelope, standing records and threshold days for Winchester (USC00449181), Virginia, United States, with 39 years of record.
Key Facts for Winchester
Winchester (USC00449181) is a weather station in Virginia, United States at 39.19 latitude and -78.15 longitude, 220 m (720 ft) above sea level.
The station reports from 1982 to 2020, 39 years of record.
1,464 records set at Winchester still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Winchester set a daily record high minimum temperature of 3.3 C (37.9 F) on 27 January 2020.
About the Station
Location: Virginia, United States, 39.19 latitude, -78.15 longitude.
Elevation: 220 m (720 ft).
Period of record: 1982 to 2020, 39 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 Winchester. 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 Winchester, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
22.2 C (72.0 F)
-24.4 C (-11.9 F)
n/a
n/a
Feb
28.3 C (82.9 F)
-20.0 C (-4.0 F)
n/a
n/a
Mar
31.1 C (88.0 F)
-16.1 C (3.0 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-5.6 C (21.9 F)
n/a
n/a
May
35.6 C (96.1 F)
0.0 C (32.0 F)
n/a
n/a
Jun
37.8 C (100.0 F)
4.4 C (39.9 F)
n/a
n/a
Jul
40.6 C (105.1 F)
9.4 C (48.9 F)
n/a
n/a
Aug
38.9 C (102.0 F)
3.9 C (39.0 F)
n/a
n/a
Sep
36.7 C (98.1 F)
1.7 C (35.1 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-4.4 C (24.1 F)
n/a
n/a
Nov
27.2 C (81.0 F)
-10.0 C (14.0 F)
n/a
n/a
Dec
25.6 C (78.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Winchester still stand. 1984 holds the most, with 61.
Standing records at Winchester by the year they were set
Year set
Standing records
1982
19
1983
58
1984
61
1985
48
1986
46
1987
39
1988
47
1989
53
1990
24
1991
57
1992
36
1993
30
1994
36
1995
39
1996
51
1997
34
1998
48
1999
31
2000
35
2001
26
2002
53
2003
29
2004
41
2005
26
2006
30
2007
28
2008
19
2009
27
2010
44
2011
29
2012
34
2013
15
2014
42
2015
42
2016
38
2017
39
2018
60
2019
46
2020
4
All-Time Record Progression
1 new records
1 all-time records were set at Winchester between 29 September 2016 and 29 September 2016. Each dot is a new record.
When Winchester set new all-time records
Date
Kind
Detail
2016-09-29
Record daily precipitation
Record daily precipitation 119.6 mm (4.7 in)
Wettest Day of Each Month
Sep: 119.6 mm (4.7 in)
The wettest day on record for each calendar month at Winchester. The most was 119.6 mm (4.7 in) on 29 September 2016.
Record daily precipitation for each month at Winchester
Month
Record daily precipitation (mm)
Date
Jan
46.7 mm (1.8 in)
25 January 2010
Feb
50.8 mm (2.0 in)
5 February 1998
Mar
99.3 mm (3.9 in)
29 March 1984
Apr
105.4 mm (4.1 in)
22 April 1992
May
84.6 mm (3.3 in)
16 May 2014
Jun
88.4 mm (3.5 in)
28 June 2006
Jul
75.4 mm (3.0 in)
29 July 2017
Aug
99.1 mm (3.9 in)
18 August 1994
Sep
119.6 mm (4.7 in)
29 September 2016
Oct
82.0 mm (3.2 in)
13 October 1990
Nov
83.8 mm (3.3 in)
28 November 1993
Dec
53.6 mm (2.1 in)
12 December 2008
Period of Record Coverage
1982 to 2020
Complete yearUnder 90 percent of days
39 years of record at Winchester, 1982 to 2020. 5 years have data for under 90 percent of days and are left out of rankings: 1982, 1990, 1993, 2013, 2020.
Cooler than the station meanWarmer than the station mean
One stripe for each of 30 complete years at Winchester, 1983 to 2019. Blue stripes are years cooler than the station's own mean of 12.3 C (54.1 F); red stripes are warmer. The coolest year was 1996, at 10.9 C (51.6 F), and the warmest was 1998, at 13.8 C (56.9 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at Winchester as warming stripes, 1983 to 2019
Year
Annual mean temperature
Difference from the station mean
1983
11.5 C
-0.76 C
1984
11.8 C
-0.52 C
1985
11.7 C
-0.60 C
1986
11.5 C
-0.81 C
1987
11.7 C
-0.56 C
1989
11.3 C
-1.01 C
1994
11.9 C
-0.43 C
1995
11.9 C
-0.38 C
1996
10.9 C
-1.41 C
1997
11.7 C
-0.60 C
1998
13.8 C
+1.51 C
1999
13.0 C
+0.73 C
2000
12.2 C
-0.13 C
2001
12.7 C
+0.39 C
2002
13.0 C
+0.66 C
2003
11.6 C
-0.75 C
2004
12.4 C
+0.07 C
2005
12.5 C
+0.22 C
2006
13.3 C
+0.95 C
2007
12.6 C
+0.33 C
2008
12.1 C
-0.24 C
2009
11.9 C
-0.39 C
2010
12.8 C
+0.48 C
2011
12.9 C
+0.61 C
2014
11.3 C
-1.01 C
2015
12.4 C
+0.13 C
2016
13.1 C
+0.79 C
2017
13.5 C
+1.15 C
2018
12.7 C
+0.41 C
2019
13.6 C
+1.31 C
The annual mean temperature here has risen by 0.4 C (0.2 to 0.6) per decade over 1983 to 2019. In Fahrenheit: 0.7 F (0.3 to 1.1) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Winchester
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.4 C (0.2 to 0.6) per decade
0.7 F (0.3 to 1.1) per decade
1983 to 2019
30
Rise
Mean daily maximum
0.4 C (0.2 to 0.7) per decade
0.8 F (0.3 to 1.3) per decade
1983 to 2019
30
Rise
Mean daily minimum
0.4 C (0.2 to 0.6) per decade
0.7 F (0.3 to 1.0) per decade
1983 to 2019
30
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
1982 to 2020
Yearly extremes at Winchester: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
40.6 C (105.1 F)
1988
36.1 C (97.0 F)
39
Coldest night (TNn)
-24.4 C (-11.9 F)
1994
-14.4 C (6.1 F)
39
Wettest day (Rx1day)
119.6 mm (4.7 in)
2016
56.1 mm (2.2 in)
39
Wettest five days (Rx5day)
205.5 mm (8.1 in)
2016
90.2 mm (3.6 in)
39
Longest dry spell (CDD)
38 days
2001
20 days
39
Hottest day (TXx)
The hottest day of the year at Winchester, 1982 to 2020. The record is 40.6 C (105.1 F) in 1988, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Winchester by year
Year
Hottest day (TXx)
1982
32.8 C (91.0 F)
1983
38.9 C (102.0 F)
1984
34.4 C (93.9 F)
1985
34.4 C (93.9 F)
1986
35.6 C (96.1 F)
1987
36.1 C (97.0 F)
1988
40.6 C (105.1 F)
1989
33.9 C (93.0 F)
1990
36.7 C (98.1 F)
1991
37.2 C (99.0 F)
1992
35.0 C (95.0 F)
1993
37.2 C (99.0 F)
1994
34.4 C (93.9 F)
1995
36.7 C (98.1 F)
1996
35.6 C (96.1 F)
1997
37.2 C (99.0 F)
1998
37.2 C (99.0 F)
1999
38.9 C (102.0 F)
2000
35.6 C (96.1 F)
2001
35.0 C (95.0 F)
2002
36.1 C (97.0 F)
2003
33.9 C (93.0 F)
2004
33.3 C (91.9 F)
2005
36.1 C (97.0 F)
2006
37.8 C (100.0 F)
2007
37.8 C (100.0 F)
2008
35.6 C (96.1 F)
2009
33.3 C (91.9 F)
2010
37.8 C (100.0 F)
2011
38.3 C (100.9 F)
2012
37.8 C (100.0 F)
2013
33.9 C (93.0 F)
2014
34.4 C (93.9 F)
2015
35.0 C (95.0 F)
2016
37.2 C (99.0 F)
2017
36.1 C (97.0 F)
2018
35.0 C (95.0 F)
2019
38.9 C (102.0 F)
2020
21.1 C (70.0 F)
Coldest night (TNn)
The coldest night of the year at Winchester, 1982 to 2020. The record is -24.4 C (-11.9 F) in 1994, marked on the chart; the median year is -14.4 C (6.1 F).
Coldest night (TNn) at Winchester by year
Year
Coldest night (TNn)
1982
-2.2 C (28.0 F)
1983
-19.4 C (-2.9 F)
1984
-21.7 C (-7.1 F)
1985
-22.2 C (-8.0 F)
1986
-13.9 C (7.0 F)
1987
-18.3 C (-0.9 F)
1988
-16.1 C (3.0 F)
1989
-17.8 C (0.0 F)
1990
-13.3 C (8.1 F)
1991
-11.7 C (10.9 F)
1992
-12.8 C (9.0 F)
1993
-13.3 C (8.1 F)
1994
-24.4 C (-11.9 F)
1995
-16.1 C (3.0 F)
1996
-19.4 C (-2.9 F)
1997
-16.7 C (1.9 F)
1998
-13.3 C (8.1 F)
1999
-13.3 C (8.1 F)
2000
-13.3 C (8.1 F)
2001
-10.6 C (12.9 F)
2002
-11.1 C (12.0 F)
2003
-15.6 C (3.9 F)
2004
-15.0 C (5.0 F)
2005
-13.3 C (8.1 F)
2006
-12.8 C (9.0 F)
2007
-15.0 C (5.0 F)
2008
-11.7 C (10.9 F)
2009
-17.8 C (0.0 F)
2010
-16.7 C (1.9 F)
2011
-13.3 C (8.1 F)
2012
-13.3 C (8.1 F)
2013
-8.9 C (16.0 F)
2014
-18.3 C (-0.9 F)
2015
-17.8 C (0.0 F)
2016
-14.4 C (6.1 F)
2017
-12.8 C (9.0 F)
2018
-17.2 C (1.0 F)
2019
-20.0 C (-4.0 F)
2020
-10.0 C (14.0 F)
Wettest day (Rx1day)
The wettest day of the year at Winchester, 1982 to 2020. The record is 119.6 mm (4.7 in) in 2016, marked on the chart; the median year is 56.1 mm (2.2 in).
Wettest day (Rx1day) at Winchester by year
Year
Wettest day (Rx1day)
1982
40.1 mm (1.6 in)
1983
36.1 mm (1.4 in)
1984
99.3 mm (3.9 in)
1985
39.1 mm (1.5 in)
1986
51.1 mm (2.0 in)
1987
84.3 mm (3.3 in)
1988
70.4 mm (2.8 in)
1989
36.8 mm (1.4 in)
1990
82.0 mm (3.2 in)
1991
41.7 mm (1.6 in)
1992
105.4 mm (4.1 in)
1993
83.8 mm (3.3 in)
1994
99.1 mm (3.9 in)
1995
76.2 mm (3.0 in)
1996
82.6 mm (3.3 in)
1997
53.3 mm (2.1 in)
1998
50.8 mm (2.0 in)
1999
40.4 mm (1.6 in)
2000
50.0 mm (2.0 in)
2001
79.0 mm (3.1 in)
2002
56.1 mm (2.2 in)
2003
53.6 mm (2.1 in)
2004
94.7 mm (3.7 in)
2005
62.5 mm (2.5 in)
2006
88.4 mm (3.5 in)
2007
42.9 mm (1.7 in)
2008
56.1 mm (2.2 in)
2009
40.1 mm (1.6 in)
2010
55.1 mm (2.2 in)
2011
49.8 mm (2.0 in)
2012
75.4 mm (3.0 in)
2013
50.5 mm (2.0 in)
2014
84.6 mm (3.3 in)
2015
46.7 mm (1.8 in)
2016
119.6 mm (4.7 in)
2017
75.4 mm (3.0 in)
2018
56.9 mm (2.2 in)
2019
65.0 mm (2.6 in)
2020
36.3 mm (1.4 in)
Wettest five days (Rx5day)
The wettest five days of the year at Winchester, 1982 to 2020. The record is 205.5 mm (8.1 in) in 2016, marked on the chart; the median year is 90.2 mm (3.6 in).
Wettest five days (Rx5day) at Winchester by year
Year
Wettest five days (Rx5day)
1982
49.3 mm (1.9 in)
1983
75.0 mm (3.0 in)
1984
128.5 mm (5.1 in)
1985
90.2 mm (3.6 in)
1986
67.2 mm (2.6 in)
1987
145.3 mm (5.7 in)
1988
90.0 mm (3.5 in)
1989
78.5 mm (3.1 in)
1990
123.7 mm (4.9 in)
1991
57.4 mm (2.3 in)
1992
110.0 mm (4.3 in)
1993
85.1 mm (3.4 in)
1994
117.4 mm (4.6 in)
1995
79.5 mm (3.1 in)
1996
118.2 mm (4.7 in)
1997
97.2 mm (3.8 in)
1998
92.7 mm (3.6 in)
1999
75.0 mm (3.0 in)
2000
70.7 mm (2.8 in)
2001
96.0 mm (3.8 in)
2002
79.3 mm (3.1 in)
2003
79.5 mm (3.1 in)
2004
100.6 mm (4.0 in)
2005
69.4 mm (2.7 in)
2006
150.6 mm (5.9 in)
2007
71.4 mm (2.8 in)
2008
87.6 mm (3.4 in)
2009
69.9 mm (2.8 in)
2010
110.5 mm (4.4 in)
2011
88.4 mm (3.5 in)
2012
103.1 mm (4.1 in)
2013
129.7 mm (5.1 in)
2014
91.4 mm (3.6 in)
2015
90.9 mm (3.6 in)
2016
205.5 mm (8.1 in)
2017
77.2 mm (3.0 in)
2018
169.4 mm (6.7 in)
2019
94.4 mm (3.7 in)
2020
36.8 mm (1.4 in)
Longest dry spell (CDD)
The longest dry spell of the year at Winchester, 1982 to 2020. The record is 38 days in 2001, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Winchester by year
Year
Longest dry spell (CDD)
1982
15 days
1983
21 days
1984
23 days
1985
23 days
1986
21 days
1987
23 days
1988
23 days
1989
14 days
1990
20 days
1991
23 days
1992
17 days
1993
16 days
1994
28 days
1995
35 days
1996
17 days
1997
14 days
1998
25 days
1999
21 days
2000
22 days
2001
38 days
2002
23 days
2003
13 days
2004
16 days
2005
16 days
2006
19 days
2007
21 days
2008
25 days
2009
24 days
2010
22 days
2011
16 days
2012
13 days
2013
15 days
2014
14 days
2015
20 days
2016
12 days
2017
22 days
2018
17 days
2019
15 days
2020
6 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
30 years with a frost
Across 30 years with a frost, the median last spring frost at Winchester falls on 11 April and the median first autumn frost on 2 November, which leaves a median of 204 days between them.
Fitted over all years, the growing season changes by +5.4 days per decade at this station.
Frost dates and growing season at Winchester
Measure
Median, all years
Earliest period
Recent period (1983 to 2019)
Recent against earliest
Fitted trend
Last spring frost
11 April
n/a
11 April
n/a
-3.3 days per decade
First autumn frost
2 November
n/a
2 November
n/a
+2.2 days per decade
Growing days
204 days
n/a
204 days
n/a
+5.4 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
34 years, 1983 to 2019
A day with at least 61.4 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 138.8 mm (5.5 in) of rain is expected about once in 100 years.
Rainfall return levels at Winchester: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
61.4 mm (2.4 in)
5 years
82.1 mm (3.2 in)
10 years
95.8 mm (3.8 in)
25 years
113.2 mm (4.5 in)
50 years
126.0 mm (5.0 in)
Longer than the 34 years of record
100 years
138.8 mm (5.5 in)
Longer than the 34 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, 34 years of values from 1983 to 2019.
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: 119.6 mm (4.7 in) in 2016; 105.4 mm (4.1 in) in 1992; 99.3 mm (3.9 in) in 1984.
Download the Data
Data for Winchester standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Winchester 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.