Record envelope, standing records and threshold days for Smithville 2 SE (USC00408405), Tennessee, United States, with 52 years of record.
Key Facts for Smithville 2 SE
Smithville 2 SE (USC00408405) is a weather station in Tennessee, United States at 35.94 latitude and -85.79 longitude, 271 m (890 ft) above sea level.
The station reports from 1971 to 2022, 52 years of record.
1,464 records set at Smithville 2 SE still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Smithville 2 SE set a daily record low maximum temperature of 10.6 C (51.1 F) on 18 April 2022.
About the Station
Location: Tennessee, United States, 35.94 latitude, -85.79 longitude.
Elevation: 271 m (890 ft).
Period of record: 1971 to 2022, 52 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 Smithville 2 SE. 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 Smithville 2 SE, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
24.4 C (75.9 F)
-31.1 C (-24.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-27.2 C (-17.0 F)
n/a
n/a
Mar
29.4 C (84.9 F)
-17.8 C (0.0 F)
n/a
n/a
Apr
32.2 C (90.0 F)
-7.8 C (18.0 F)
n/a
n/a
May
33.3 C (91.9 F)
-2.8 C (27.0 F)
n/a
n/a
Jun
40.6 C (105.1 F)
3.3 C (37.9 F)
n/a
n/a
Jul
40.0 C (104.0 F)
6.7 C (44.1 F)
n/a
n/a
Aug
38.9 C (102.0 F)
6.7 C (44.1 F)
n/a
n/a
Sep
37.2 C (99.0 F)
-1.7 C (28.9 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-6.1 C (21.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-12.8 C (9.0 F)
n/a
n/a
Dec
24.4 C (75.9 F)
-21.7 C (-7.1 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Smithville 2 SE still stand. 1974 holds the most, with 46.
Standing records at Smithville 2 SE by the year they were set
Year set
Standing records
1971
25
1972
38
1973
29
1974
46
1975
26
1976
46
1977
42
1978
21
1979
37
1980
46
1981
36
1982
42
1983
43
1984
35
1985
37
1986
31
1987
17
1988
36
1989
45
1990
23
1991
39
1992
26
1993
30
1994
7
1995
29
1996
34
1997
24
1998
29
1999
27
2000
28
2001
24
2002
21
2003
17
2004
26
2005
16
2006
21
2007
35
2008
18
2009
17
2010
30
2011
29
2012
24
2013
25
2014
31
2015
34
2016
22
2017
24
2018
22
2019
23
2020
15
2021
10
2022
6
All-Time Record Progression
2 new records
2 all-time records were set at Smithville 2 SE between 30 June 2012 and 23 January 2016. Each dot is a new record.
When Smithville 2 SE set new all-time records
Date
Kind
Detail
2012-06-30
Record high maximum temperature
Record high maximum temperature 40.6 C (105.1 F)
2016-01-23
Record daily snowfall
Record daily snowfall 12.7 cm (5.0 in)
Wettest Day of Each Month
Mar: 142.2 mm (5.6 in)
The wettest day on record for each calendar month at Smithville 2 SE. The most was 142.2 mm (5.6 in) on 13 March 1975.
Record daily precipitation for each month at Smithville 2 SE
Month
Record daily precipitation (mm)
Date
Jan
102.6 mm (4.0 in)
23 January 2006
Feb
104.6 mm (4.1 in)
5 February 2004
Mar
142.2 mm (5.6 in)
13 March 1975
Apr
74.4 mm (2.9 in)
28 April 2013
May
86.9 mm (3.4 in)
28 May 1973
Jun
114.6 mm (4.5 in)
4 June 1998
Jul
124.2 mm (4.9 in)
1 July 1973
Aug
115.6 mm (4.6 in)
17 August 1982
Sep
127.8 mm (5.0 in)
18 September 2012
Oct
121.9 mm (4.8 in)
17 October 1975
Nov
121.2 mm (4.8 in)
7 November 2017
Dec
115.6 mm (4.6 in)
12 December 1998
Period of Record Coverage
1971 to 2022
Complete yearUnder 90 percent of days
52 years of record at Smithville 2 SE, 1971 to 2022. 4 years have data for under 90 percent of days and are left out of rankings: 1971, 1978, 1988, 2022.
Cooler than the station meanWarmer than the station mean
One stripe for each of 43 complete years at Smithville 2 SE, 1972 to 2021. Blue stripes are years cooler than the station's own mean of 13.6 C (56.5 F); red stripes are warmer. The coolest year was 1976, at 12.6 C (54.6 F), and the warmest was 1998, at 14.7 C (58.5 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Smithville 2 SE as warming stripes, 1972 to 2021
Year
Annual mean temperature
Difference from the station mean
1972
13.7 C
+0.09 C
1974
13.8 C
+0.14 C
1975
14.0 C
+0.37 C
1976
12.6 C
-1.06 C
1977
13.6 C
-0.02 C
1979
12.8 C
-0.82 C
1980
13.6 C
-0.08 C
1981
13.2 C
-0.47 C
1982
13.8 C
+0.12 C
1983
12.9 C
-0.78 C
1985
13.2 C
-0.47 C
1987
13.7 C
+0.06 C
1989
12.8 C
-0.89 C
1991
14.3 C
+0.68 C
1992
13.1 C
-0.54 C
1993
13.1 C
-0.56 C
1994
13.3 C
-0.36 C
1995
13.1 C
-0.53 C
1996
12.9 C
-0.74 C
1997
13.0 C
-0.62 C
1998
14.7 C
+1.09 C
1999
14.2 C
+0.53 C
2000
13.4 C
-0.22 C
2001
13.6 C
-0.02 C
2002
14.0 C
+0.38 C
2003
13.4 C
-0.29 C
2004
14.0 C
+0.34 C
2005
14.0 C
+0.36 C
2006
14.0 C
+0.35 C
2007
14.4 C
+0.74 C
2008
13.3 C
-0.30 C
2009
13.4 C
-0.21 C
2010
13.3 C
-0.34 C
2011
13.6 C
-0.02 C
2013
13.1 C
-0.53 C
2014
12.8 C
-0.89 C
2015
14.1 C
+0.43 C
2016
14.7 C
+1.06 C
2017
14.7 C
+1.01 C
2018
14.3 C
+0.67 C
2019
14.7 C
+1.05 C
2020
14.4 C
+0.71 C
2021
14.1 C
+0.47 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1972 to 2021. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Smithville 2 SE
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.3) per decade
0.3 F (0.1 to 0.5) per decade
1972 to 2021
43
Rise
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1972 to 2021
43
Not clearly different from zero
Mean daily minimum
0.3 C (0.1 to 0.4) per decade
0.5 F (0.2 to 0.7) per decade
1972 to 2021
43
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
1971 to 2022
Yearly extremes at Smithville 2 SE: 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)
2012
35.0 C (95.0 F)
52
Coldest night (TNn)
-31.1 C (-24.0 F)
1985
-16.1 C (3.0 F)
52
Wettest day (Rx1day)
142.2 mm (5.6 in)
1975
73.6 mm (2.9 in)
52
Wettest five days (Rx5day)
228.5 mm (9.0 in)
2003
130.8 mm (5.1 in)
52
Longest dry spell (CDD)
34 days
1998
17 days
52
Hottest day (TXx)
The hottest day of the year at Smithville 2 SE, 1971 to 2022. The record is 40.6 C (105.1 F) in 2012, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Smithville 2 SE by year
Year
Hottest day (TXx)
1971
33.3 C (91.9 F)
1972
33.9 C (93.0 F)
1973
33.9 C (93.0 F)
1974
33.9 C (93.0 F)
1975
35.0 C (95.0 F)
1976
34.4 C (93.9 F)
1977
36.1 C (97.0 F)
1978
35.0 C (95.0 F)
1979
33.9 C (93.0 F)
1980
40.0 C (104.0 F)
1981
36.1 C (97.0 F)
1982
33.9 C (93.0 F)
1983
38.9 C (102.0 F)
1984
33.9 C (93.0 F)
1985
34.4 C (93.9 F)
1986
36.7 C (98.1 F)
1987
36.1 C (97.0 F)
1988
37.8 C (100.0 F)
1989
33.3 C (91.9 F)
1990
37.2 C (99.0 F)
1991
35.6 C (96.1 F)
1992
34.4 C (93.9 F)
1993
35.6 C (96.1 F)
1994
32.8 C (91.0 F)
1995
35.0 C (95.0 F)
1996
34.4 C (93.9 F)
1997
36.1 C (97.0 F)
1998
35.0 C (95.0 F)
1999
36.1 C (97.0 F)
2000
35.6 C (96.1 F)
2001
33.9 C (93.0 F)
2002
34.4 C (93.9 F)
2003
32.8 C (91.0 F)
2004
32.8 C (91.0 F)
2005
35.6 C (96.1 F)
2006
36.1 C (97.0 F)
2007
38.9 C (102.0 F)
2008
35.0 C (95.0 F)
2009
33.3 C (91.9 F)
2010
37.2 C (99.0 F)
2011
36.7 C (98.1 F)
2012
40.6 C (105.1 F)
2013
32.8 C (91.0 F)
2014
32.8 C (91.0 F)
2015
33.9 C (93.0 F)
2016
35.0 C (95.0 F)
2017
34.4 C (93.9 F)
2018
35.0 C (95.0 F)
2019
36.1 C (97.0 F)
2020
34.4 C (93.9 F)
2021
33.9 C (93.0 F)
2022
28.3 C (82.9 F)
Coldest night (TNn)
The coldest night of the year at Smithville 2 SE, 1971 to 2022. The record is -31.1 C (-24.0 F) in 1985, marked on the chart; the median year is -16.1 C (3.0 F).
Coldest night (TNn) at Smithville 2 SE by year
Year
Coldest night (TNn)
1971
-11.1 C (12.0 F)
1972
-18.9 C (-2.0 F)
1973
-16.1 C (3.0 F)
1974
-11.7 C (10.9 F)
1975
-14.4 C (6.1 F)
1976
-17.8 C (0.0 F)
1977
-22.2 C (-8.0 F)
1978
-16.1 C (3.0 F)
1979
-21.7 C (-7.1 F)
1980
-17.8 C (0.0 F)
1981
-19.4 C (-2.9 F)
1982
-22.2 C (-8.0 F)
1983
-21.7 C (-7.1 F)
1984
-18.3 C (-0.9 F)
1985
-31.1 C (-24.0 F)
1986
-21.1 C (-6.0 F)
1987
-15.0 C (5.0 F)
1988
-18.9 C (-2.0 F)
1989
-21.7 C (-7.1 F)
1990
-11.1 C (12.0 F)
1991
-16.1 C (3.0 F)
1992
-14.4 C (6.1 F)
1993
-14.4 C (6.1 F)
1994
-22.8 C (-9.0 F)
1995
-16.7 C (1.9 F)
1996
-27.2 C (-17.0 F)
1997
-18.3 C (-0.9 F)
1998
-10.0 C (14.0 F)
1999
-12.2 C (10.0 F)
2000
-15.6 C (3.9 F)
2001
-14.4 C (6.1 F)
2002
-11.7 C (10.9 F)
2003
-18.3 C (-0.9 F)
2004
-12.8 C (9.0 F)
2005
-11.7 C (10.9 F)
2006
-12.8 C (9.0 F)
2007
-12.8 C (9.0 F)
2008
-13.9 C (7.0 F)
2009
-16.1 C (3.0 F)
2010
-15.0 C (5.0 F)
2011
-15.6 C (3.9 F)
2012
-11.1 C (12.0 F)
2013
-10.6 C (12.9 F)
2014
-19.4 C (-2.9 F)
2015
-20.6 C (-5.1 F)
2016
-16.1 C (3.0 F)
2017
-17.2 C (1.0 F)
2018
-19.4 C (-2.9 F)
2019
-10.0 C (14.0 F)
2020
-11.1 C (12.0 F)
2021
-12.8 C (9.0 F)
2022
-12.8 C (9.0 F)
Wettest day (Rx1day)
The wettest day of the year at Smithville 2 SE, 1971 to 2022. The record is 142.2 mm (5.6 in) in 1975, marked on the chart; the median year is 73.6 mm (2.9 in).
Wettest day (Rx1day) at Smithville 2 SE by year
Year
Wettest day (Rx1day)
1971
52.3 mm (2.1 in)
1972
70.6 mm (2.8 in)
1973
124.2 mm (4.9 in)
1974
88.6 mm (3.5 in)
1975
142.2 mm (5.6 in)
1976
49.8 mm (2.0 in)
1977
66.0 mm (2.6 in)
1978
63.5 mm (2.5 in)
1979
98.3 mm (3.9 in)
1980
85.1 mm (3.4 in)
1981
55.1 mm (2.2 in)
1982
115.6 mm (4.6 in)
1983
70.4 mm (2.8 in)
1984
71.1 mm (2.8 in)
1985
69.1 mm (2.7 in)
1986
99.1 mm (3.9 in)
1987
78.2 mm (3.1 in)
1988
81.3 mm (3.2 in)
1989
55.9 mm (2.2 in)
1990
93.7 mm (3.7 in)
1991
78.0 mm (3.1 in)
1992
66.5 mm (2.6 in)
1993
68.3 mm (2.7 in)
1994
77.5 mm (3.1 in)
1995
61.7 mm (2.4 in)
1996
92.5 mm (3.6 in)
1997
58.4 mm (2.3 in)
1998
115.6 mm (4.6 in)
1999
72.4 mm (2.9 in)
2000
82.6 mm (3.3 in)
2001
50.8 mm (2.0 in)
2002
97.0 mm (3.8 in)
2003
73.4 mm (2.9 in)
2004
104.6 mm (4.1 in)
2005
42.7 mm (1.7 in)
2006
102.6 mm (4.0 in)
2007
59.2 mm (2.3 in)
2008
73.7 mm (2.9 in)
2009
83.8 mm (3.3 in)
2010
86.9 mm (3.4 in)
2011
60.7 mm (2.4 in)
2012
127.8 mm (5.0 in)
2013
74.4 mm (2.9 in)
2014
65.3 mm (2.6 in)
2015
64.5 mm (2.5 in)
2016
58.9 mm (2.3 in)
2017
121.2 mm (4.8 in)
2018
88.4 mm (3.5 in)
2019
63.5 mm (2.5 in)
2020
61.2 mm (2.4 in)
2021
134.6 mm (5.3 in)
2022
70.9 mm (2.8 in)
Wettest five days (Rx5day)
The wettest five days of the year at Smithville 2 SE, 1971 to 2022. The record is 228.5 mm (9.0 in) in 2003, marked on the chart; the median year is 130.8 mm (5.1 in).
Wettest five days (Rx5day) at Smithville 2 SE by year
Year
Wettest five days (Rx5day)
1971
117.7 mm (4.6 in)
1972
108.2 mm (4.3 in)
1973
203.8 mm (8.0 in)
1974
131.3 mm (5.2 in)
1975
189.5 mm (7.5 in)
1976
89.0 mm (3.5 in)
1977
113.9 mm (4.5 in)
1978
75.6 mm (3.0 in)
1979
135.6 mm (5.3 in)
1980
161.3 mm (6.4 in)
1981
71.3 mm (2.8 in)
1982
149.4 mm (5.9 in)
1983
105.7 mm (4.2 in)
1984
158.7 mm (6.2 in)
1985
86.6 mm (3.4 in)
1986
144.6 mm (5.7 in)
1987
108.5 mm (4.3 in)
1988
100.6 mm (4.0 in)
1989
108.5 mm (4.3 in)
1990
213.2 mm (8.4 in)
1991
158.3 mm (6.2 in)
1992
101.3 mm (4.0 in)
1993
131.7 mm (5.2 in)
1994
176.0 mm (6.9 in)
1995
108.2 mm (4.3 in)
1996
117.1 mm (4.6 in)
1997
121.6 mm (4.8 in)
1998
138.5 mm (5.5 in)
1999
105.9 mm (4.2 in)
2000
136.6 mm (5.4 in)
2001
111.8 mm (4.4 in)
2002
154.9 mm (6.1 in)
2003
228.5 mm (9.0 in)
2004
137.6 mm (5.4 in)
2005
82.1 mm (3.2 in)
2006
114.6 mm (4.5 in)
2007
80.3 mm (3.2 in)
2008
124.5 mm (4.9 in)
2009
145.1 mm (5.7 in)
2010
153.4 mm (6.0 in)
2011
131.3 mm (5.2 in)
2012
130.6 mm (5.1 in)
2013
108.9 mm (4.3 in)
2014
153.1 mm (6.0 in)
2015
124.5 mm (4.9 in)
2016
87.7 mm (3.5 in)
2017
130.9 mm (5.2 in)
2018
165.9 mm (6.5 in)
2019
196.2 mm (7.7 in)
2020
90.7 mm (3.6 in)
2021
179.6 mm (7.1 in)
2022
145.6 mm (5.7 in)
Longest dry spell (CDD)
The longest dry spell of the year at Smithville 2 SE, 1971 to 2022. The record is 34 days in 1998, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Smithville 2 SE by year
Year
Longest dry spell (CDD)
1971
11 days
1972
11 days
1973
17 days
1974
15 days
1975
23 days
1976
13 days
1977
17 days
1978
16 days
1979
12 days
1980
17 days
1981
13 days
1982
12 days
1983
18 days
1984
23 days
1985
14 days
1986
19 days
1987
21 days
1988
24 days
1989
14 days
1990
14 days
1991
18 days
1992
18 days
1993
18 days
1994
10 days
1995
12 days
1996
14 days
1997
18 days
1998
34 days
1999
22 days
2000
21 days
2001
25 days
2002
19 days
2003
17 days
2004
14 days
2005
20 days
2006
14 days
2007
21 days
2008
29 days
2009
15 days
2010
18 days
2011
13 days
2012
26 days
2013
18 days
2014
19 days
2015
20 days
2016
28 days
2017
13 days
2018
10 days
2019
24 days
2020
9 days
2021
15 days
2022
13 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
43 years with a frost
Across 43 years with a frost, the median last spring frost at Smithville 2 SE falls on 16 April and the median first autumn frost on 19 October, which leaves a median of 186 days between them.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
Frost dates and growing season at Smithville 2 SE
Measure
Median, all years
Earliest period
Recent period (1991 to 2021)
Recent against earliest
Fitted trend
Last spring frost
16 April
n/a
15 April
n/a
+0.6 days per decade
First autumn frost
19 October
n/a
21 October
n/a
+2.4 days per decade
Growing days
186 days
n/a
187 days
n/a
+1.8 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
49 years, 1972 to 2021
A day with at least 76.7 mm (3.0 in) of rain is expected about once in 2 years. A day with at least 162.6 mm (6.4 in) of rain is expected about once in 100 years.
Rainfall return levels at Smithville 2 SE: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
76.7 mm (3.0 in)
5 years
98.1 mm (3.9 in)
10 years
112.8 mm (4.4 in)
25 years
132.3 mm (5.2 in)
50 years
147.2 mm (5.8 in)
Longer than the 49 years of record
100 years
162.6 mm (6.4 in)
Longer than the 49 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, 49 years of values from 1972 to 2021.
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: 142.2 mm (5.6 in) in 1975; 134.6 mm (5.3 in) in 2021; 127.8 mm (5.0 in) in 2012.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Smithville 2 SE, at 1983. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1983 ran 0.2 C (0.4 F) lower than in the years before (likely change).
Suspected changes in the annual mean temperature at Smithville 2 SE, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1983
-0.2
-0.4
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 Smithville 2 SE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Smithville 2 SE 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.