Record envelope, standing records and threshold days for Niobrara (USC00255960), Nebraska, United States, with 67 years of record.
Key Facts for Niobrara
Niobrara (USC00255960) is a weather station in Nebraska, United States at 42.75 latitude and -98.05 longitude, 376 m (1,234 ft) above sea level.
The station reports from 1939 to 2005, 67 years of record.
1,464 records set at Niobrara still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Niobrara tied a daily record high maximum temperature of 36.7 C (98.1 F) on 22 September 2005.
About the Station
Location: Nebraska, United States, 42.75 latitude, -98.05 longitude.
Elevation: 376 m (1,234 ft).
Period of record: 1939 to 2005, 67 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 Niobrara. 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 Niobrara, 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)
-35.0 C (-31.0 F)
n/a
n/a
Feb
25.6 C (78.1 F)
-35.0 C (-31.0 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-33.9 C (-29.0 F)
n/a
n/a
Apr
36.7 C (98.1 F)
-17.2 C (1.0 F)
n/a
n/a
May
40.0 C (104.0 F)
-6.1 C (21.0 F)
n/a
n/a
Jun
42.8 C (109.0 F)
1.7 C (35.1 F)
n/a
n/a
Jul
46.7 C (116.1 F)
3.9 C (39.0 F)
n/a
n/a
Aug
42.8 C (109.0 F)
1.1 C (34.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
-5.6 C (21.9 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-11.1 C (12.0 F)
n/a
n/a
Nov
29.4 C (84.9 F)
-27.8 C (-18.0 F)
n/a
n/a
Dec
23.3 C (73.9 F)
-36.1 C (-33.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Niobrara still stand. 1989 holds the most, with 48.
Standing records at Niobrara by the year they were set
Year set
Standing records
1939
41
1940
47
1941
29
1942
32
1943
34
1944
16
1945
22
1946
24
1947
30
1948
27
1949
20
1950
45
1951
13
1952
14
1953
23
1954
24
1955
7
1956
16
1957
11
1958
19
1959
26
1960
22
1961
15
1962
32
1963
28
1964
29
1965
19
1966
17
1967
24
1968
26
1969
17
1970
14
1971
14
1972
28
1973
8
1974
23
1975
22
1976
24
1977
8
1978
18
1979
20
1980
13
1981
24
1982
16
1983
33
1984
10
1985
33
1986
15
1987
22
1988
33
1989
48
1990
26
1991
30
1992
24
1993
4
1994
14
1995
20
1996
16
1997
17
1998
16
1999
17
2000
28
2001
14
2002
23
2003
16
2004
18
2005
6
All-Time Record Progression
2 new records
2 all-time records were set at Niobrara between 22 December 1983 and 22 December 1989. Each dot is a new record.
When Niobrara set new all-time records
Date
Kind
Detail
1983-12-22
Record low maximum temperature
Record low maximum temperature -23.9 C (-11.0 F)
1989-12-22
Record low minimum temperature
Record low minimum temperature -36.1 C (-33.0 F)
Wettest Day of Each Month
Jun: 182.9 mm (7.2 in)
The wettest day on record for each calendar month at Niobrara. The most was 182.9 mm (7.2 in) on 7 June 1967.
Record daily precipitation for each month at Niobrara
Month
Record daily precipitation (mm)
Date
Jan
35.6 mm (1.4 in)
29 January 1947
Feb
47.0 mm (1.9 in)
24 February 2000
Mar
68.8 mm (2.7 in)
17 March 1987
Apr
50.3 mm (2.0 in)
23 April 1944
May
101.1 mm (4.0 in)
16 May 1992
Jun
182.9 mm (7.2 in)
7 June 1967
Jul
83.8 mm (3.3 in)
20 July 1999
Aug
67.3 mm (2.6 in)
26 August 1980
Sep
64.3 mm (2.5 in)
16 September 1986
Oct
50.3 mm (2.0 in)
16 October 1968
Nov
40.6 mm (1.6 in)
24 November 2001
Dec
25.4 mm (1.0 in)
3 December 1953
Period of Record Coverage
1939 to 2005
Complete yearUnder 90 percent of days
67 years of record at Niobrara, 1939 to 2005. 7 years have data for under 90 percent of days and are left out of rankings: 1945, 1946, 1951, 1955, 1956, 1958, 2005.
Cooler than the station meanWarmer than the station mean
One stripe for each of 54 complete years at Niobrara, 1939 to 2004. Blue stripes are years cooler than the station's own mean of 9.8 C (49.7 F); red stripes are warmer. The coolest year was 1950, at 6.6 C (43.9 F), and the warmest was 1987, at 12.0 C (53.6 F). The strongest colour marks a difference of 3.3 C (5.9 F).
Annual mean temperature at Niobrara as warming stripes, 1939 to 2004
Year
Annual mean temperature
Difference from the station mean
1939
11.4 C
+1.58 C
1940
9.8 C
+0.02 C
1941
10.9 C
+1.07 C
1942
9.7 C
-0.10 C
1943
10.2 C
+0.41 C
1944
9.6 C
-0.21 C
1948
9.3 C
-0.56 C
1949
8.6 C
-1.20 C
1950
6.6 C
-3.22 C
1952
10.2 C
+0.42 C
1953
11.0 C
+1.22 C
1954
11.1 C
+1.32 C
1957
9.9 C
+0.13 C
1960
8.0 C
-1.83 C
1961
8.7 C
-1.12 C
1962
8.8 C
-1.00 C
1963
10.6 C
+0.82 C
1964
10.1 C
+0.25 C
1965
9.5 C
-0.35 C
1966
9.4 C
-0.39 C
1967
10.0 C
+0.15 C
1968
10.1 C
+0.33 C
1969
9.0 C
-0.78 C
1970
9.2 C
-0.57 C
1971
9.4 C
-0.40 C
1972
8.5 C
-1.27 C
1973
10.0 C
+0.15 C
1974
9.3 C
-0.51 C
1976
9.4 C
-0.46 C
1978
7.7 C
-2.13 C
1979
7.5 C
-2.33 C
1980
9.6 C
-0.18 C
1981
10.4 C
+0.57 C
1982
8.0 C
-1.83 C
1983
9.0 C
-0.79 C
1984
9.3 C
-0.53 C
1985
8.8 C
-1.02 C
1986
10.8 C
+1.02 C
1987
12.0 C
+2.19 C
1988
10.9 C
+1.07 C
1989
9.9 C
+0.11 C
1990
11.1 C
+1.27 C
1991
11.1 C
+1.30 C
1992
10.1 C
+0.33 C
1993
8.7 C
-1.07 C
1994
9.9 C
+0.07 C
1997
10.0 C
+0.18 C
1998
11.4 C
+1.62 C
1999
11.6 C
+1.78 C
2000
10.8 C
+0.94 C
2001
10.8 C
+0.95 C
2002
11.1 C
+1.27 C
2003
10.5 C
+0.66 C
2004
10.3 C
+0.46 C
The fitted trend in annual mean temperature here over 1939 to 2004 is 0.13 C (-0.03 to 0.29) 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 54 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Niobrara
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.13 C (-0.03 to 0.29) per decade
0.2 F (-0.1 to 0.5) per decade
1939 to 2004
54
Not clearly different from zero
Mean daily maximum
0.01 C (-0.18 to 0.20) per decade
0.01 F (-0.33 to 0.36) per decade
1939 to 2004
54
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
1939 to 2004
54
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
1939 to 2005
Yearly extremes at Niobrara: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
46.7 C (116.1 F)
1939
39.4 C (102.9 F)
67
Coldest night (TNn)
-36.1 C (-33.0 F)
1989
-28.9 C (-20.0 F)
67
Wettest day (Rx1day)
182.9 mm (7.2 in)
1967
49.8 mm (2.0 in)
67
Wettest five days (Rx5day)
188.8 mm (7.4 in)
1967
73.1 mm (2.9 in)
67
Longest dry spell (CDD)
75 days
1999
34 days
67
Hottest day (TXx)
The hottest day of the year at Niobrara, 1939 to 2005. The record is 46.7 C (116.1 F) in 1939, marked on the chart; the median year is 39.4 C (102.9 F).
Hottest day (TXx) at Niobrara by year
Year
Hottest day (TXx)
1939
46.7 C (116.1 F)
1940
46.7 C (116.1 F)
1941
42.8 C (109.0 F)
1942
41.7 C (107.1 F)
1943
42.2 C (108.0 F)
1944
37.8 C (100.0 F)
1945
43.3 C (109.9 F)
1946
40.0 C (104.0 F)
1947
42.8 C (109.0 F)
1948
38.9 C (102.0 F)
1949
37.8 C (100.0 F)
1950
35.0 C (95.0 F)
1951
31.7 C (89.1 F)
1952
42.8 C (109.0 F)
1953
40.6 C (105.1 F)
1954
42.2 C (108.0 F)
1955
30.6 C (87.1 F)
1956
39.4 C (102.9 F)
1957
40.0 C (104.0 F)
1958
38.9 C (102.0 F)
1959
40.0 C (104.0 F)
1960
38.9 C (102.0 F)
1961
41.1 C (106.0 F)
1962
38.3 C (100.9 F)
1963
41.7 C (107.1 F)
1964
41.1 C (106.0 F)
1965
40.0 C (104.0 F)
1966
41.1 C (106.0 F)
1967
40.6 C (105.1 F)
1968
38.9 C (102.0 F)
1969
38.9 C (102.0 F)
1970
40.0 C (104.0 F)
1971
38.3 C (100.9 F)
1972
36.1 C (97.0 F)
1973
38.9 C (102.0 F)
1974
39.4 C (102.9 F)
1975
37.8 C (100.0 F)
1976
39.4 C (102.9 F)
1977
37.8 C (100.0 F)
1978
39.4 C (102.9 F)
1979
37.2 C (99.0 F)
1980
40.6 C (105.1 F)
1981
38.9 C (102.0 F)
1982
37.8 C (100.0 F)
1983
40.0 C (104.0 F)
1984
37.8 C (100.0 F)
1985
38.3 C (100.9 F)
1986
37.8 C (100.0 F)
1987
38.3 C (100.9 F)
1988
42.8 C (109.0 F)
1989
42.8 C (109.0 F)
1990
40.6 C (105.1 F)
1991
39.4 C (102.9 F)
1992
35.6 C (96.1 F)
1993
35.0 C (95.0 F)
1994
35.6 C (96.1 F)
1995
42.8 C (109.0 F)
1996
35.6 C (96.1 F)
1997
38.9 C (102.0 F)
1998
36.7 C (98.1 F)
1999
36.7 C (98.1 F)
2000
38.3 C (100.9 F)
2001
37.2 C (99.0 F)
2002
40.6 C (105.1 F)
2003
40.6 C (105.1 F)
2004
36.7 C (98.1 F)
2005
39.4 C (102.9 F)
Coldest night (TNn)
The coldest night of the year at Niobrara, 1939 to 2005. The record is -36.1 C (-33.0 F) in 1989, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Niobrara by year
Year
Coldest night (TNn)
1939
-28.9 C (-20.0 F)
1940
-31.1 C (-24.0 F)
1941
-25.0 C (-13.0 F)
1942
-31.1 C (-24.0 F)
1943
-31.7 C (-25.1 F)
1944
-34.4 C (-29.9 F)
1945
-22.8 C (-9.0 F)
1946
-28.9 C (-20.0 F)
1947
-25.0 C (-13.0 F)
1948
-33.3 C (-27.9 F)
1949
-31.7 C (-25.1 F)
1950
-32.2 C (-26.0 F)
1951
-28.9 C (-20.0 F)
1952
-22.8 C (-9.0 F)
1953
-28.3 C (-18.9 F)
1954
-25.6 C (-14.1 F)
1955
-26.1 C (-15.0 F)
1956
-22.2 C (-8.0 F)
1957
-27.2 C (-17.0 F)
1958
-30.0 C (-22.0 F)
1959
-28.3 C (-18.9 F)
1960
-30.6 C (-23.1 F)
1961
-28.3 C (-18.9 F)
1962
-35.0 C (-31.0 F)
1963
-29.4 C (-20.9 F)
1964
-32.8 C (-27.0 F)
1965
-30.0 C (-22.0 F)
1966
-35.0 C (-31.0 F)
1967
-27.8 C (-18.0 F)
1968
-31.7 C (-25.1 F)
1969
-30.6 C (-23.1 F)
1970
-35.0 C (-31.0 F)
1971
-25.0 C (-13.0 F)
1972
-28.9 C (-20.0 F)
1973
-31.1 C (-24.0 F)
1974
-31.1 C (-24.0 F)
1975
-30.0 C (-22.0 F)
1976
-26.1 C (-15.0 F)
1977
-32.2 C (-26.0 F)
1978
-31.7 C (-25.1 F)
1979
-31.7 C (-25.1 F)
1980
-29.4 C (-20.9 F)
1981
-31.1 C (-24.0 F)
1982
-31.7 C (-25.1 F)
1983
-31.7 C (-25.1 F)
1984
-30.6 C (-23.1 F)
1985
-27.2 C (-17.0 F)
1986
-24.4 C (-11.9 F)
1987
-19.4 C (-2.9 F)
1988
-32.2 C (-26.0 F)
1989
-36.1 C (-33.0 F)
1990
-28.3 C (-18.9 F)
1991
-25.6 C (-14.1 F)
1992
-21.7 C (-7.1 F)
1993
-26.7 C (-16.1 F)
1994
-33.9 C (-29.0 F)
1995
-24.4 C (-11.9 F)
1996
-32.8 C (-27.0 F)
1997
-28.3 C (-18.9 F)
1998
-26.1 C (-15.0 F)
1999
-25.6 C (-14.1 F)
2000
-29.4 C (-20.9 F)
2001
-27.2 C (-17.0 F)
2002
-21.7 C (-7.1 F)
2003
-27.2 C (-17.0 F)
2004
-26.7 C (-16.1 F)
2005
-25.6 C (-14.1 F)
Wettest day (Rx1day)
The wettest day of the year at Niobrara, 1939 to 2005. The record is 182.9 mm (7.2 in) in 1967, marked on the chart; the median year is 49.8 mm (2.0 in).
Wettest day (Rx1day) at Niobrara by year
Year
Wettest day (Rx1day)
1939
43.2 mm (1.7 in)
1940
38.1 mm (1.5 in)
1941
49.8 mm (2.0 in)
1942
44.7 mm (1.8 in)
1943
55.1 mm (2.2 in)
1944
96.8 mm (3.8 in)
1945
43.2 mm (1.7 in)
1946
37.6 mm (1.5 in)
1947
61.0 mm (2.4 in)
1948
49.3 mm (1.9 in)
1949
51.3 mm (2.0 in)
1950
38.1 mm (1.5 in)
1951
60.2 mm (2.4 in)
1952
22.9 mm (0.9 in)
1953
83.8 mm (3.3 in)
1954
47.0 mm (1.9 in)
1955
29.0 mm (1.1 in)
1956
12.7 mm (0.5 in)
1957
42.7 mm (1.7 in)
1958
24.4 mm (1.0 in)
1959
50.3 mm (2.0 in)
1960
64.8 mm (2.6 in)
1961
45.2 mm (1.8 in)
1962
70.9 mm (2.8 in)
1963
71.1 mm (2.8 in)
1964
83.8 mm (3.3 in)
1965
95.3 mm (3.8 in)
1966
21.3 mm (0.8 in)
1967
182.9 mm (7.2 in)
1968
55.4 mm (2.2 in)
1969
41.4 mm (1.6 in)
1970
43.7 mm (1.7 in)
1971
63.2 mm (2.5 in)
1972
61.0 mm (2.4 in)
1973
53.6 mm (2.1 in)
1974
37.1 mm (1.5 in)
1975
47.5 mm (1.9 in)
1976
52.1 mm (2.1 in)
1977
64.8 mm (2.6 in)
1978
72.1 mm (2.8 in)
1979
34.3 mm (1.4 in)
1980
67.3 mm (2.6 in)
1981
53.8 mm (2.1 in)
1982
76.2 mm (3.0 in)
1983
54.1 mm (2.1 in)
1984
42.7 mm (1.7 in)
1985
63.2 mm (2.5 in)
1986
64.3 mm (2.5 in)
1987
68.8 mm (2.7 in)
1988
33.8 mm (1.3 in)
1989
51.3 mm (2.0 in)
1990
49.0 mm (1.9 in)
1991
35.1 mm (1.4 in)
1992
101.1 mm (4.0 in)
1993
43.7 mm (1.7 in)
1994
41.1 mm (1.6 in)
1995
37.3 mm (1.5 in)
1996
23.4 mm (0.9 in)
1997
35.8 mm (1.4 in)
1998
50.0 mm (2.0 in)
1999
83.8 mm (3.3 in)
2000
90.7 mm (3.6 in)
2001
46.5 mm (1.8 in)
2002
38.6 mm (1.5 in)
2003
35.3 mm (1.4 in)
2004
52.1 mm (2.1 in)
2005
26.9 mm (1.1 in)
Wettest five days (Rx5day)
The wettest five days of the year at Niobrara, 1939 to 2005. The record is 188.8 mm (7.4 in) in 1967, marked on the chart; the median year is 73.1 mm (2.9 in).
Wettest five days (Rx5day) at Niobrara by year
Year
Wettest five days (Rx5day)
1939
62.8 mm (2.5 in)
1940
63.7 mm (2.5 in)
1941
70.0 mm (2.8 in)
1942
79.2 mm (3.1 in)
1943
133.1 mm (5.2 in)
1944
118.9 mm (4.7 in)
1945
46.0 mm (1.8 in)
1946
73.1 mm (2.9 in)
1947
92.2 mm (3.6 in)
1948
79.5 mm (3.1 in)
1949
75.2 mm (3.0 in)
1950
63.7 mm (2.5 in)
1951
128.6 mm (5.1 in)
1952
41.4 mm (1.6 in)
1953
101.6 mm (4.0 in)
1954
71.6 mm (2.8 in)
1955
29.0 mm (1.1 in)
1956
26.9 mm (1.1 in)
1957
83.6 mm (3.3 in)
1958
61.6 mm (2.4 in)
1959
53.9 mm (2.1 in)
1960
90.7 mm (3.6 in)
1961
77.7 mm (3.1 in)
1962
88.1 mm (3.5 in)
1963
92.4 mm (3.6 in)
1964
132.4 mm (5.2 in)
1965
139.2 mm (5.5 in)
1966
58.1 mm (2.3 in)
1967
188.8 mm (7.4 in)
1968
68.6 mm (2.7 in)
1969
70.1 mm (2.8 in)
1970
69.6 mm (2.7 in)
1971
69.9 mm (2.8 in)
1972
127.6 mm (5.0 in)
1973
96.1 mm (3.8 in)
1974
37.4 mm (1.5 in)
1975
56.4 mm (2.2 in)
1976
80.3 mm (3.2 in)
1977
91.5 mm (3.6 in)
1978
132.0 mm (5.2 in)
1979
62.0 mm (2.4 in)
1980
78.1 mm (3.1 in)
1981
57.1 mm (2.2 in)
1982
86.2 mm (3.4 in)
1983
78.0 mm (3.1 in)
1984
64.8 mm (2.6 in)
1985
77.7 mm (3.1 in)
1986
106.9 mm (4.2 in)
1987
100.8 mm (4.0 in)
1988
60.7 mm (2.4 in)
1989
60.2 mm (2.4 in)
1990
72.6 mm (2.9 in)
1991
46.7 mm (1.8 in)
1992
107.2 mm (4.2 in)
1993
62.9 mm (2.5 in)
1994
54.6 mm (2.1 in)
1995
77.5 mm (3.1 in)
1996
63.7 mm (2.5 in)
1997
71.6 mm (2.8 in)
1998
67.7 mm (2.7 in)
1999
115.8 mm (4.6 in)
2000
90.7 mm (3.6 in)
2001
101.0 mm (4.0 in)
2002
52.4 mm (2.1 in)
2003
79.2 mm (3.1 in)
2004
70.4 mm (2.8 in)
2005
26.9 mm (1.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at Niobrara, 1939 to 2005. The record is 75 days in 1999, marked on the chart; the median year is 34 days.
Longest dry spell (CDD) at Niobrara by year
Year
Longest dry spell (CDD)
1939
74 days
1940
26 days
1941
22 days
1942
31 days
1943
37 days
1944
32 days
1945
22 days
1946
46 days
1947
33 days
1948
31 days
1949
23 days
1950
30 days
1951
19 days
1952
58 days
1953
51 days
1954
49 days
1955
24 days
1956
26 days
1957
45 days
1958
54 days
1959
43 days
1960
37 days
1961
38 days
1962
48 days
1963
50 days
1964
71 days
1965
23 days
1966
26 days
1967
44 days
1968
40 days
1969
20 days
1970
24 days
1971
48 days
1972
45 days
1973
22 days
1974
46 days
1975
40 days
1976
74 days
1977
53 days
1978
31 days
1979
36 days
1980
34 days
1981
40 days
1982
34 days
1983
20 days
1984
16 days
1985
45 days
1986
44 days
1987
38 days
1988
42 days
1989
28 days
1990
25 days
1991
25 days
1992
34 days
1993
34 days
1994
40 days
1995
33 days
1996
34 days
1997
37 days
1998
47 days
1999
75 days
2000
24 days
2001
41 days
2002
28 days
2003
22 days
2004
25 days
2005
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
54 years with a frost
Across 54 years with a frost, the median last spring frost at Niobrara falls on 6 May and the median first autumn frost on 3 October, which leaves a median of 151 days between them.
Fitted over all years, the growing season changes by +1.5 days per decade at this station.
Frost dates and growing season at Niobrara
Measure
Median, all years
Earliest period
Recent period (1971 to 2004)
Recent against earliest
Fitted trend
Last spring frost
6 May
n/a
2 May
n/a
-0.7 days per decade
First autumn frost
3 October
n/a
2 October
n/a
+0.8 days per decade
Growing days
151 days
n/a
152 days
n/a
+1.5 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
58 years, 1939 to 2004
A day with at least 51.0 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 144.6 mm (5.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Niobrara: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
51.0 mm (2.0 in)
5 years
70.6 mm (2.8 in)
10 years
85.6 mm (3.4 in)
25 years
106.9 mm (4.2 in)
50 years
124.8 mm (4.9 in)
100 years
144.6 mm (5.7 in)
Longer than the 58 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, 58 years of values from 1939 to 2004.
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: 182.9 mm (7.2 in) in 1967; 101.1 mm (4.0 in) in 1992; 96.8 mm (3.8 in) in 1944.
Station Changes
1 suspected
One change was suspected in the annual mean temperature of Niobrara, at 1986. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1986 ran 0.4 C (0.7 F) higher than in the years before (possible change).
Suspected changes in the annual mean temperature at Niobrara, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1986
+0.4
+0.7
possible
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 Niobrara standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Niobrara 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.