Record envelope, standing records and threshold days for Red Willow Dam (USC00257110), Nebraska, United States, with 51 years of record.
Key Facts for Red Willow Dam
Red Willow Dam (USC00257110) is a weather station in Nebraska, United States at 40.36 latitude and -100.66 longitude, 781 m (2,561 ft) above sea level.
The station reports from 1962 to 2012, 51 years of record.
1,464 records set at Red Willow Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Red Willow Dam set a daily record low minimum temperature of -23.9 C (-11.0 F) on 27 December 2012.
About the Station
Location: Nebraska, United States, 40.36 latitude, -100.66 longitude.
Elevation: 781 m (2,561 ft).
Period of record: 1962 to 2012, 51 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 Red Willow Dam. 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 Red Willow Dam, 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)
-30.6 C (-23.1 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-28.9 C (-20.0 F)
n/a
n/a
Mar
30.6 C (87.1 F)
-25.6 C (-14.1 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-12.2 C (10.0 F)
n/a
n/a
May
38.9 C (102.0 F)
-5.6 C (21.9 F)
n/a
n/a
Jun
42.2 C (108.0 F)
-2.8 C (27.0 F)
n/a
n/a
Jul
42.8 C (109.0 F)
4.4 C (39.9 F)
n/a
n/a
Aug
41.7 C (107.1 F)
3.9 C (39.0 F)
n/a
n/a
Sep
40.0 C (104.0 F)
-7.8 C (18.0 F)
n/a
n/a
Oct
35.0 C (95.0 F)
-12.2 C (10.0 F)
n/a
n/a
Nov
28.9 C (84.0 F)
-23.3 C (-9.9 F)
n/a
n/a
Dec
25.0 C (77.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Red Willow Dam still stand. 1989 holds the most, with 51.
Standing records at Red Willow Dam by the year they were set
Year set
Standing records
1962
24
1963
48
1964
40
1965
40
1966
33
1967
32
1968
33
1969
35
1970
26
1971
25
1972
48
1973
18
1974
35
1975
26
1976
24
1977
30
1978
30
1979
12
1980
29
1981
26
1982
15
1983
46
1984
26
1985
32
1986
28
1987
29
1988
13
1989
51
1990
31
1991
29
1992
22
1993
29
1994
26
1995
29
1996
26
1997
31
1998
36
1999
28
2000
35
2001
18
2002
43
2003
32
2004
34
2005
21
2006
12
2007
20
2008
12
2009
25
2010
12
2011
22
2012
37
All-Time Record Progression
2 new records
2 all-time records were set at Red Willow Dam between 10 January 1993 and 27 May 2008. Each dot is a new record.
When Red Willow Dam set new all-time records
Date
Kind
Detail
1993-01-10
Record snow depth
Record snow depth 45.7 cm (18.0 in)
2008-05-27
Record daily precipitation
Record daily precipitation 136.9 mm (5.4 in)
Wettest Day of Each Month
May: 136.9 mm (5.4 in)
The wettest day on record for each calendar month at Red Willow Dam. The most was 136.9 mm (5.4 in) on 27 May 2008.
Record daily precipitation for each month at Red Willow Dam
Month
Record daily precipitation (mm)
Date
Jan
22.1 mm (0.9 in)
19 January 1988
Feb
32.3 mm (1.3 in)
19 February 1971
Mar
50.0 mm (2.0 in)
30 March 2005
Apr
67.1 mm (2.6 in)
16 April 2003
May
136.9 mm (5.4 in)
27 May 2008
Jun
116.1 mm (4.6 in)
14 June 2010
Jul
72.9 mm (2.9 in)
18 July 1981
Aug
89.9 mm (3.5 in)
13 August 1988
Sep
71.9 mm (2.8 in)
18 September 1969
Oct
49.0 mm (1.9 in)
22 October 2009
Nov
35.1 mm (1.4 in)
20 November 1975
Dec
40.4 mm (1.6 in)
31 December 2006
Period of Record Coverage
1962 to 2012
Complete yearUnder 90 percent of days
51 years of record at Red Willow Dam, 1962 to 2012. 15 years have data for under 90 percent of days and are left out of rankings: 1962, 1974, 1978, 1979, 1980, 1981, 1982, 1983 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 34 complete years at Red Willow Dam, 1963 to 2012. Blue stripes are years cooler than the station's own mean of 9.9 C (49.7 F); red stripes are warmer. The coolest year was 1993, at 8.4 C (47.2 F), and the warmest was 2012, at 11.2 C (52.2 F). The strongest colour marks a difference of 1.5 C (2.7 F).
Annual mean temperature at Red Willow Dam as warming stripes, 1963 to 2012
Year
Annual mean temperature
Difference from the station mean
1963
11.1 C
+1.21 C
1965
9.7 C
-0.15 C
1966
9.4 C
-0.50 C
1967
9.6 C
-0.27 C
1968
9.5 C
-0.37 C
1969
9.4 C
-0.47 C
1970
9.8 C
-0.04 C
1971
9.5 C
-0.40 C
1972
8.9 C
-0.95 C
1973
9.7 C
-0.12 C
1975
9.1 C
-0.72 C
1976
9.8 C
-0.05 C
1977
10.2 C
+0.37 C
1984
9.3 C
-0.58 C
1985
8.8 C
-1.02 C
1987
10.6 C
+0.76 C
1988
10.2 C
+0.35 C
1990
10.5 C
+0.62 C
1993
8.4 C
-1.43 C
1996
9.0 C
-0.89 C
1997
9.9 C
+0.03 C
1998
11.1 C
+1.26 C
1999
10.8 C
+0.89 C
2000
10.6 C
+0.72 C
2001
10.8 C
+0.92 C
2002
10.7 C
+0.86 C
2003
10.5 C
+0.63 C
2004
10.3 C
+0.41 C
2007
10.0 C
+0.10 C
2008
9.0 C
-0.83 C
2009
8.8 C
-1.07 C
2010
9.8 C
-0.11 C
2011
9.2 C
-0.68 C
2012
11.2 C
+1.36 C
The fitted trend in annual mean temperature here over 1963 to 2012 is 0.1 C (-0.1 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.2 F (-0.1 to 0.5) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Red Willow Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.1 to 0.5) per decade
1963 to 2012
34
Not clearly different from zero
Mean daily maximum
0.1 C (-0.1 to 0.3) per decade
0.2 F (-0.2 to 0.6) per decade
1963 to 2012
34
Not clearly different from zero
Mean daily minimum
0.1 C (-0.1 to 0.2) per decade
0.1 F (-0.2 to 0.4) per decade
1963 to 2012
34
Not clearly different from zero
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
1962 to 2012
Yearly extremes at Red Willow Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
42.8 C (109.0 F)
1990
39.4 C (102.9 F)
51
Coldest night (TNn)
-33.9 C (-29.0 F)
1989
-25.0 C (-13.0 F)
51
Wettest day (Rx1day)
136.9 mm (5.4 in)
2008
50.3 mm (2.0 in)
51
Wettest five days (Rx5day)
155.4 mm (6.1 in)
2008
70.8 mm (2.8 in)
51
Longest dry spell (CDD)
69 days
1967
38 days
51
Hottest day (TXx)
The hottest day of the year at Red Willow Dam, 1962 to 2012. The record is 42.8 C (109.0 F) in 1990, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Red Willow Dam by year
Year
Hottest day (TXx)
1962
38.3 C (100.9 F)
1963
40.6 C (105.1 F)
1964
40.0 C (104.0 F)
1965
38.9 C (102.0 F)
1966
39.4 C (102.9 F)
1967
37.8 C (100.0 F)
1968
40.0 C (104.0 F)
1969
41.1 C (106.0 F)
1970
40.6 C (105.1 F)
1971
40.0 C (104.0 F)
1972
36.7 C (98.1 F)
1973
41.1 C (106.0 F)
1974
40.6 C (105.1 F)
1975
39.4 C (102.9 F)
1976
38.9 C (102.0 F)
1977
39.4 C (102.9 F)
1978
41.1 C (106.0 F)
1979
37.8 C (100.0 F)
1980
35.0 C (95.0 F)
1981
39.4 C (102.9 F)
1982
38.3 C (100.9 F)
1983
40.6 C (105.1 F)
1984
39.4 C (102.9 F)
1985
39.4 C (102.9 F)
1986
38.3 C (100.9 F)
1987
39.4 C (102.9 F)
1988
40.6 C (105.1 F)
1989
40.0 C (104.0 F)
1990
42.8 C (109.0 F)
1991
40.0 C (104.0 F)
1992
36.1 C (97.0 F)
1993
36.1 C (97.0 F)
1994
38.9 C (102.0 F)
1995
40.6 C (105.1 F)
1996
36.7 C (98.1 F)
1997
39.4 C (102.9 F)
1998
41.7 C (107.1 F)
1999
38.3 C (100.9 F)
2000
40.0 C (104.0 F)
2001
40.6 C (105.1 F)
2002
41.1 C (106.0 F)
2003
41.7 C (107.1 F)
2004
38.3 C (100.9 F)
2005
42.2 C (108.0 F)
2006
42.2 C (108.0 F)
2007
38.9 C (102.0 F)
2008
40.6 C (105.1 F)
2009
38.3 C (100.9 F)
2010
37.2 C (99.0 F)
2011
38.3 C (100.9 F)
2012
42.2 C (108.0 F)
Coldest night (TNn)
The coldest night of the year at Red Willow Dam, 1962 to 2012. The record is -33.9 C (-29.0 F) in 1989, marked on the chart; the median year is -25.0 C (-13.0 F).
Coldest night (TNn) at Red Willow Dam by year
Year
Coldest night (TNn)
1962
-20.0 C (-4.0 F)
1963
-30.6 C (-23.1 F)
1964
-26.7 C (-16.1 F)
1965
-25.6 C (-14.1 F)
1966
-28.9 C (-20.0 F)
1967
-23.9 C (-11.0 F)
1968
-26.1 C (-15.0 F)
1969
-23.9 C (-11.0 F)
1970
-24.4 C (-11.9 F)
1971
-28.9 C (-20.0 F)
1972
-26.7 C (-16.1 F)
1973
-23.3 C (-9.9 F)
1974
-30.0 C (-22.0 F)
1975
-24.4 C (-11.9 F)
1976
-26.1 C (-15.0 F)
1977
-25.0 C (-13.0 F)
1978
-28.9 C (-20.0 F)
1979
-26.1 C (-15.0 F)
1980
-26.1 C (-15.0 F)
1981
-27.8 C (-18.0 F)
1982
-28.9 C (-20.0 F)
1983
-31.7 C (-25.1 F)
1984
-30.0 C (-22.0 F)
1985
-28.9 C (-20.0 F)
1986
-24.4 C (-11.9 F)
1987
-17.2 C (1.0 F)
1988
-27.8 C (-18.0 F)
1989
-33.9 C (-29.0 F)
1990
-27.2 C (-17.0 F)
1991
-20.0 C (-4.0 F)
1992
-18.9 C (-2.0 F)
1993
-25.6 C (-14.1 F)
1994
-25.0 C (-13.0 F)
1995
-21.1 C (-6.0 F)
1996
-25.6 C (-14.1 F)
1997
-24.4 C (-11.9 F)
1998
-25.6 C (-14.1 F)
1999
-21.1 C (-6.0 F)
2000
-20.0 C (-4.0 F)
2001
-17.2 C (1.0 F)
2002
-23.9 C (-11.0 F)
2003
-22.8 C (-9.0 F)
2004
-27.8 C (-18.0 F)
2005
-23.9 C (-11.0 F)
2006
-18.3 C (-0.9 F)
2007
-22.8 C (-9.0 F)
2008
-23.9 C (-11.0 F)
2009
-22.2 C (-8.0 F)
2010
-22.2 C (-8.0 F)
2011
-26.7 C (-16.1 F)
2012
-23.9 C (-11.0 F)
Wettest day (Rx1day)
The wettest day of the year at Red Willow Dam, 1962 to 2012. The record is 136.9 mm (5.4 in) in 2008, marked on the chart; the median year is 50.3 mm (2.0 in).
Wettest day (Rx1day) at Red Willow Dam by year
Year
Wettest day (Rx1day)
1962
68.1 mm (2.7 in)
1963
68.6 mm (2.7 in)
1964
26.4 mm (1.0 in)
1965
40.4 mm (1.6 in)
1966
50.3 mm (2.0 in)
1967
51.1 mm (2.0 in)
1968
30.0 mm (1.2 in)
1969
71.9 mm (2.8 in)
1970
39.9 mm (1.6 in)
1971
66.8 mm (2.6 in)
1972
38.1 mm (1.5 in)
1973
48.8 mm (1.9 in)
1974
73.4 mm (2.9 in)
1975
61.5 mm (2.4 in)
1976
58.2 mm (2.3 in)
1977
88.1 mm (3.5 in)
1978
25.7 mm (1.0 in)
1979
51.6 mm (2.0 in)
1980
40.6 mm (1.6 in)
1981
72.9 mm (2.9 in)
1982
66.5 mm (2.6 in)
1983
43.4 mm (1.7 in)
1984
42.9 mm (1.7 in)
1985
81.5 mm (3.2 in)
1986
41.9 mm (1.6 in)
1987
78.2 mm (3.1 in)
1988
89.9 mm (3.5 in)
1989
33.5 mm (1.3 in)
1990
30.2 mm (1.2 in)
1991
53.6 mm (2.1 in)
1992
52.6 mm (2.1 in)
1993
47.2 mm (1.9 in)
1994
35.6 mm (1.4 in)
1995
34.3 mm (1.4 in)
1996
78.2 mm (3.1 in)
1997
43.7 mm (1.7 in)
1998
36.6 mm (1.4 in)
1999
69.1 mm (2.7 in)
2000
53.3 mm (2.1 in)
2001
42.2 mm (1.7 in)
2002
59.2 mm (2.3 in)
2003
67.1 mm (2.6 in)
2004
34.5 mm (1.4 in)
2005
50.0 mm (2.0 in)
2006
48.5 mm (1.9 in)
2007
58.9 mm (2.3 in)
2008
136.9 mm (5.4 in)
2009
49.0 mm (1.9 in)
2010
116.1 mm (4.6 in)
2011
46.5 mm (1.8 in)
2012
18.0 mm (0.7 in)
Wettest five days (Rx5day)
The wettest five days of the year at Red Willow Dam, 1962 to 2012. The record is 155.4 mm (6.1 in) in 2008, marked on the chart; the median year is 70.8 mm (2.8 in).
Wettest five days (Rx5day) at Red Willow Dam by year
Year
Wettest five days (Rx5day)
1962
92.2 mm (3.6 in)
1963
91.2 mm (3.6 in)
1964
39.1 mm (1.5 in)
1965
83.9 mm (3.3 in)
1966
64.7 mm (2.5 in)
1967
61.5 mm (2.4 in)
1968
46.0 mm (1.8 in)
1969
82.8 mm (3.3 in)
1970
53.0 mm (2.1 in)
1971
75.9 mm (3.0 in)
1972
68.4 mm (2.7 in)
1973
71.9 mm (2.8 in)
1974
98.6 mm (3.9 in)
1975
83.3 mm (3.3 in)
1976
74.2 mm (2.9 in)
1977
119.3 mm (4.7 in)
1978
31.0 mm (1.2 in)
1979
56.9 mm (2.2 in)
1980
72.9 mm (2.9 in)
1981
82.6 mm (3.3 in)
1982
71.4 mm (2.8 in)
1983
71.3 mm (2.8 in)
1984
53.6 mm (2.1 in)
1985
81.8 mm (3.2 in)
1986
48.7 mm (1.9 in)
1987
121.4 mm (4.8 in)
1988
89.9 mm (3.5 in)
1989
49.3 mm (1.9 in)
1990
48.1 mm (1.9 in)
1991
79.7 mm (3.1 in)
1992
57.1 mm (2.2 in)
1993
124.7 mm (4.9 in)
1994
42.1 mm (1.7 in)
1995
45.0 mm (1.8 in)
1996
104.1 mm (4.1 in)
1997
48.3 mm (1.9 in)
1998
52.9 mm (2.1 in)
1999
69.4 mm (2.7 in)
2000
61.2 mm (2.4 in)
2001
69.9 mm (2.8 in)
2002
64.8 mm (2.6 in)
2003
69.9 mm (2.8 in)
2004
70.8 mm (2.8 in)
2005
99.4 mm (3.9 in)
2006
48.5 mm (1.9 in)
2007
128.3 mm (5.1 in)
2008
155.4 mm (6.1 in)
2009
71.3 mm (2.8 in)
2010
116.1 mm (4.6 in)
2011
10.4 mm (0.4 in)
2012
9.4 mm (0.37 in)
Longest dry spell (CDD)
The longest dry spell of the year at Red Willow Dam, 1962 to 2012. The record is 69 days in 1967, marked on the chart; the median year is 38 days.
Longest dry spell (CDD) at Red Willow Dam by year
Year
Longest dry spell (CDD)
1962
35 days
1963
36 days
1964
68 days
1965
52 days
1966
49 days
1967
69 days
1968
51 days
1969
25 days
1970
52 days
1971
34 days
1972
51 days
1973
27 days
1974
40 days
1975
38 days
1976
50 days
1977
41 days
1978
33 days
1979
47 days
1980
57 days
1981
34 days
1982
27 days
1983
31 days
1984
31 days
1985
20 days
1986
32 days
1987
36 days
1988
36 days
1989
53 days
1990
33 days
1991
23 days
1992
35 days
1993
30 days
1994
43 days
1995
48 days
1996
49 days
1997
33 days
1998
38 days
1999
55 days
2000
49 days
2001
23 days
2002
60 days
2003
31 days
2004
32 days
2005
32 days
2006
53 days
2007
38 days
2008
53 days
2009
36 days
2010
42 days
2011
18 days
2012
45 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at Red Willow Dam falls on 3 May and the median first autumn frost on 30 September, which leaves a median of 151 days between them.
Fitted over all years, the growing season changes by +2.3 days per decade at this station.
Frost dates and growing season at Red Willow Dam
Measure
Median, all years
Earliest period
Recent period (1968 to 2012)
Recent against earliest
Fitted trend
Last spring frost
3 May
n/a
2 May
n/a
-2.1 days per decade
First autumn frost
30 September
n/a
30 September
n/a
+0.2 days per decade
Growing days
151 days
n/a
152 days
n/a
+2.3 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
43 years, 1963 to 2010
A day with at least 51.2 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 134.4 mm (5.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Red Willow Dam: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.2 mm (2.0 in)
5 years
70.3 mm (2.8 in)
10 years
84.2 mm (3.3 in)
25 years
103.1 mm (4.1 in)
50 years
118.3 mm (4.7 in)
Longer than the 43 years of record
100 years
134.4 mm (5.3 in)
Longer than the 43 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, 43 years of values from 1963 to 2010.
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: 136.9 mm (5.4 in) in 2008; 116.1 mm (4.6 in) in 2010; 88.1 mm (3.5 in) in 1977.
Download the Data
Data for Red Willow Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Red Willow Dam 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.