Record envelope, standing records and threshold days for Twin Falls-Kmvt (USC00109293), Idaho, United States, with 33 years of record.
Key Facts for Twin Falls-Kmvt
Twin Falls-Kmvt (USC00109293) is a weather station in Idaho, United States at 42.58 latitude and -114.46 longitude, 1,119 m (3,670 ft) above sea level.
The station reports from 1980 to 2012, 33 years of record.
1,464 records set at Twin Falls-Kmvt still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Twin Falls-Kmvt set a daily record high minimum temperature of 9.4 C (48.9 F) on 25 April 2012.
About the Station
Location: Idaho, United States, 42.58 latitude, -114.46 longitude.
Elevation: 1,119 m (3,670 ft).
Period of record: 1980 to 2012, 33 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 Twin Falls-Kmvt. 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 Twin Falls-Kmvt, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.2 C (63.0 F)
-25.0 C (-13.0 F)
n/a
n/a
Feb
21.1 C (70.0 F)
-27.2 C (-17.0 F)
n/a
n/a
Mar
25.6 C (78.1 F)
-15.6 C (3.9 F)
n/a
n/a
Apr
33.3 C (91.9 F)
-8.9 C (16.0 F)
n/a
n/a
May
40.6 C (105.1 F)
-4.4 C (24.1 F)
n/a
n/a
Jun
40.0 C (104.0 F)
-0.6 C (30.9 F)
n/a
n/a
Jul
43.3 C (109.9 F)
3.3 C (37.9 F)
n/a
n/a
Aug
40.6 C (105.1 F)
2.8 C (37.0 F)
n/a
n/a
Sep
39.4 C (102.9 F)
-4.4 C (24.1 F)
n/a
n/a
Oct
34.4 C (93.9 F)
-11.7 C (10.9 F)
n/a
n/a
Nov
26.7 C (80.1 F)
-19.4 C (-2.9 F)
n/a
n/a
Dec
19.4 C (66.9 F)
-29.4 C (-20.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Twin Falls-Kmvt still stand. 1985 holds the most, with 114.
Standing records at Twin Falls-Kmvt by the year they were set
Year set
Standing records
1980
55
1981
35
1982
58
1983
46
1984
51
1985
114
1986
45
1987
61
1988
47
1989
37
1990
51
1991
45
1992
47
1993
60
1994
30
1995
46
1996
57
1997
36
1998
44
1999
34
2000
29
2001
41
2002
45
2003
65
2004
31
2005
39
2006
32
2007
45
2008
36
2009
46
2010
36
2011
14
2012
6
Wettest Day of Each Month
Jun: 38.6 mm (1.5 in)
The wettest day on record for each calendar month at Twin Falls-Kmvt. The most was 38.6 mm (1.5 in) on 8 June 2006.
Record daily precipitation for each month at Twin Falls-Kmvt
Month
Record daily precipitation (mm)
Date
Jan
16.5 mm (0.6 in)
20 January 1999
Feb
36.3 mm (1.4 in)
18 February 1986
Mar
34.3 mm (1.4 in)
17 March 1993
Apr
33.5 mm (1.3 in)
20 April 1981
May
27.4 mm (1.1 in)
31 May 1990
Jun
38.6 mm (1.5 in)
8 June 2006
Jul
10.9 mm (0.4 in)
31 July 1985
Aug
15.2 mm (0.6 in)
19 August 1982
Sep
18.0 mm (0.7 in)
9 September 1985
Oct
28.7 mm (1.1 in)
24 October 2010
Nov
26.4 mm (1.0 in)
18 November 1983
Dec
27.9 mm (1.1 in)
5 December 1994
Period of Record Coverage
1980 to 2012
Complete yearUnder 90 percent of days
33 years of record at Twin Falls-Kmvt, 1980 to 2012. 9 years have data for under 90 percent of days and are left out of rankings: 2001, 2003, 2004, 2005, 2006, 2007, 2009, 2011 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 21 complete years at Twin Falls-Kmvt, 1981 to 2010. Blue stripes are years cooler than the station's own mean of 9.7 C (49.5 F); red stripes are warmer. The coolest year was 1985, at 6.7 C (44.1 F), and the warmest was 2007, at 11.6 C (52.9 F). The strongest colour marks a difference of 3.1 C (5.6 F).
Annual mean temperature at Twin Falls-Kmvt as warming stripes, 1981 to 2010
Year
Annual mean temperature
Difference from the station mean
1981
10.0 C
+0.23 C
1982
8.3 C
-1.49 C
1983
9.4 C
-0.35 C
1984
8.0 C
-1.77 C
1985
6.7 C
-3.02 C
1986
9.7 C
-0.03 C
1989
9.4 C
-0.39 C
1990
9.8 C
+0.08 C
1991
9.7 C
-0.01 C
1992
10.8 C
+1.06 C
1993
8.1 C
-1.65 C
1994
10.1 C
+0.39 C
1995
10.1 C
+0.38 C
1996
9.9 C
+0.20 C
1998
10.7 C
+0.92 C
2002
10.2 C
+0.41 C
2004
10.9 C
+1.16 C
2007
11.6 C
+1.89 C
2008
10.3 C
+0.55 C
2009
10.3 C
+0.53 C
2010
10.6 C
+0.83 C
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1980 to 2012
Yearly extremes at Twin Falls-Kmvt: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
2003
38.3 C (100.9 F)
33
Coldest night (TNn)
-29.4 C (-20.9 F)
1990
-18.3 C (-0.9 F)
33
Wettest day (Rx1day)
38.6 mm (1.5 in)
2006
17.8 mm (0.7 in)
33
Wettest five days (Rx5day)
55.1 mm (2.2 in)
1993
30.4 mm (1.2 in)
33
Longest dry spell (CDD)
107 days
1981
47 days
33
Hottest day (TXx)
The hottest day of the year at Twin Falls-Kmvt, 1980 to 2012. The record is 43.3 C (109.9 F) in 2003, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at Twin Falls-Kmvt by year
Year
Hottest day (TXx)
1980
36.1 C (97.0 F)
1981
37.8 C (100.0 F)
1982
35.6 C (96.1 F)
1983
38.3 C (100.9 F)
1984
37.2 C (99.0 F)
1985
36.7 C (98.1 F)
1986
36.7 C (98.1 F)
1987
38.9 C (102.0 F)
1988
37.8 C (100.0 F)
1989
37.8 C (100.0 F)
1990
38.9 C (102.0 F)
1991
37.8 C (100.0 F)
1992
37.8 C (100.0 F)
1993
35.0 C (95.0 F)
1994
38.3 C (100.9 F)
1995
36.7 C (98.1 F)
1996
38.3 C (100.9 F)
1997
38.3 C (100.9 F)
1998
40.0 C (104.0 F)
1999
37.8 C (100.0 F)
2000
38.3 C (100.9 F)
2001
41.1 C (106.0 F)
2002
42.2 C (108.0 F)
2003
43.3 C (109.9 F)
2004
38.3 C (100.9 F)
2005
41.1 C (106.0 F)
2006
39.4 C (102.9 F)
2007
41.1 C (106.0 F)
2008
40.0 C (104.0 F)
2009
40.0 C (104.0 F)
2010
40.0 C (104.0 F)
2011
30.0 C (86.0 F)
2012
33.3 C (91.9 F)
Coldest night (TNn)
The coldest night of the year at Twin Falls-Kmvt, 1980 to 2012. The record is -29.4 C (-20.9 F) in 1990, marked on the chart; the median year is -18.3 C (-0.9 F).
Coldest night (TNn) at Twin Falls-Kmvt by year
Year
Coldest night (TNn)
1980
-13.3 C (8.1 F)
1981
-14.4 C (6.1 F)
1982
-22.8 C (-9.0 F)
1983
-23.3 C (-9.9 F)
1984
-25.0 C (-13.0 F)
1985
-23.3 C (-9.9 F)
1986
-16.7 C (1.9 F)
1987
-20.0 C (-4.0 F)
1988
-18.9 C (-2.0 F)
1989
-23.3 C (-9.9 F)
1990
-29.4 C (-20.9 F)
1991
-19.4 C (-2.9 F)
1992
-19.4 C (-2.9 F)
1993
-18.3 C (-0.9 F)
1994
-17.8 C (0.0 F)
1995
-15.0 C (5.0 F)
1996
-27.2 C (-17.0 F)
1997
-13.9 C (7.0 F)
1998
-20.0 C (-4.0 F)
1999
-13.9 C (7.0 F)
2000
-12.8 C (9.0 F)
2001
-15.0 C (5.0 F)
2002
-17.8 C (0.0 F)
2003
-15.6 C (3.9 F)
2004
-17.2 C (1.0 F)
2005
-17.2 C (1.0 F)
2006
-14.4 C (6.1 F)
2007
-18.3 C (-0.9 F)
2008
-20.0 C (-4.0 F)
2009
-21.7 C (-7.1 F)
2010
-19.4 C (-2.9 F)
2011
-15.6 C (3.9 F)
2012
-1.1 C (30.0 F)
Wettest day (Rx1day)
The wettest day of the year at Twin Falls-Kmvt, 1980 to 2012. The record is 38.6 mm (1.5 in) in 2006, marked on the chart; the median year is 17.8 mm (0.7 in).
Wettest day (Rx1day) at Twin Falls-Kmvt by year
Year
Wettest day (Rx1day)
1980
14.0 mm (0.6 in)
1981
33.5 mm (1.3 in)
1982
16.3 mm (0.6 in)
1983
26.4 mm (1.0 in)
1984
14.2 mm (0.6 in)
1985
18.0 mm (0.7 in)
1986
36.3 mm (1.4 in)
1987
22.4 mm (0.9 in)
1988
23.4 mm (0.9 in)
1989
17.0 mm (0.7 in)
1990
27.4 mm (1.1 in)
1991
12.7 mm (0.5 in)
1992
15.2 mm (0.6 in)
1993
34.3 mm (1.4 in)
1994
27.9 mm (1.1 in)
1995
24.6 mm (1.0 in)
1996
19.1 mm (0.8 in)
1997
17.8 mm (0.7 in)
1998
18.5 mm (0.7 in)
1999
16.5 mm (0.6 in)
2000
15.5 mm (0.6 in)
2001
15.2 mm (0.6 in)
2002
10.2 mm (0.4 in)
2003
14.5 mm (0.6 in)
2004
13.7 mm (0.5 in)
2005
20.6 mm (0.8 in)
2006
38.6 mm (1.5 in)
2007
17.3 mm (0.7 in)
2008
14.0 mm (0.6 in)
2009
25.1 mm (1.0 in)
2010
28.7 mm (1.1 in)
2011
12.4 mm (0.5 in)
2012
0.3 mm (0.01 in)
Wettest five days (Rx5day)
The wettest five days of the year at Twin Falls-Kmvt, 1980 to 2012. The record is 55.1 mm (2.2 in) in 1993, marked on the chart; the median year is 30.4 mm (1.2 in).
Wettest five days (Rx5day) at Twin Falls-Kmvt by year
Year
Wettest five days (Rx5day)
1980
26.7 mm (1.1 in)
1981
36.8 mm (1.4 in)
1982
27.1 mm (1.1 in)
1983
37.6 mm (1.5 in)
1984
26.7 mm (1.1 in)
1985
31.7 mm (1.2 in)
1986
53.2 mm (2.1 in)
1987
26.9 mm (1.1 in)
1988
37.1 mm (1.5 in)
1989
30.2 mm (1.2 in)
1990
46.2 mm (1.8 in)
1991
17.3 mm (0.7 in)
1992
21.1 mm (0.8 in)
1993
55.1 mm (2.2 in)
1994
40.1 mm (1.6 in)
1995
51.1 mm (2.0 in)
1996
43.2 mm (1.7 in)
1997
23.3 mm (0.9 in)
1998
39.0 mm (1.5 in)
1999
31.7 mm (1.2 in)
2000
19.6 mm (0.8 in)
2001
30.4 mm (1.2 in)
2002
15.8 mm (0.6 in)
2003
19.9 mm (0.8 in)
2004
18.7 mm (0.7 in)
2005
41.2 mm (1.6 in)
2006
38.6 mm (1.5 in)
2007
18.6 mm (0.7 in)
2008
22.1 mm (0.9 in)
2009
32.3 mm (1.3 in)
2010
31.8 mm (1.3 in)
2011
20.5 mm (0.8 in)
2012
0.3 mm (0.01 in)
Longest dry spell (CDD)
The longest dry spell of the year at Twin Falls-Kmvt, 1980 to 2012. The record is 107 days in 1981, marked on the chart; the median year is 47 days.
Longest dry spell (CDD) at Twin Falls-Kmvt by year
Year
Longest dry spell (CDD)
1980
45 days
1981
107 days
1982
25 days
1983
28 days
1984
36 days
1985
39 days
1986
47 days
1987
77 days
1988
86 days
1989
39 days
1990
65 days
1991
35 days
1992
53 days
1993
45 days
1994
69 days
1995
84 days
1996
32 days
1997
47 days
1998
29 days
1999
76 days
2000
78 days
2001
69 days
2002
70 days
2003
76 days
2004
34 days
2005
48 days
2006
82 days
2007
41 days
2008
73 days
2009
37 days
2010
50 days
2011
30 days
2012
5 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
21 years with a frost
Across 21 years with a frost, the median last spring frost at Twin Falls-Kmvt falls on 9 May and the median first autumn frost on 5 October, which leaves a median of 146 days between them.
Frost dates and growing season at Twin Falls-Kmvt
Measure
Median, all years
Earliest period
Recent period (1981 to 2010)
Recent against earliest
Fitted trend
Last spring frost
9 May
n/a
9 May
n/a
n/a
First autumn frost
5 October
n/a
5 October
n/a
n/a
Growing days
146 days
n/a
146 days
n/a
n/a
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.
Download the Data
Data for Twin Falls-Kmvt standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Twin Falls-Kmvt 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.