Box Butte Exp STN Weather Records (USC00251045)

Record envelope, standing records and threshold days for Box Butte Exp STN (USC00251045), Nebraska, United States, with 51 years of record.

Key Facts for Box Butte Exp STN

Box Butte Exp STN (USC00251045) is a weather station in Nebraska, United States at 42.13 latitude and -102.95 longitude, 1,226 m (4,022 ft) above sea level.
The station reports from 1931 to 1981, 51 years of record.
1,464 records set at Box Butte Exp STN still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Box Butte Exp STN tied a daily record high maximum temperature of 17.8 C (64.0 F) on 26 February 1981.

About the Station

Location: Nebraska, United States, 42.13 latitude, -102.95 longitude.
Elevation: 1,226 m (4,022 ft).
Period of record: 1931 to 1981, 51 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Box Butte Exp STN. 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 Box Butte Exp STN, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.6 C (69.1 F)	-37.2 C (-35.0 F)	n/a	n/a
Feb	24.4 C (75.9 F)	-36.1 C (-33.0 F)	n/a	n/a
Mar	27.8 C (82.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-24.4 C (-11.9 F)	n/a	n/a
May	37.2 C (99.0 F)	-10.6 C (12.9 F)	n/a	n/a
Jun	44.4 C (111.9 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	2.8 C (37.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	0.6 C (33.1 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-10.6 C (12.9 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-13.9 C (7.0 F)	n/a	n/a
Nov	25.6 C (78.1 F)	-27.2 C (-17.0 F)	n/a	n/a
Dec	23.3 C (73.9 F)	-31.7 C (-25.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Box Butte Exp STN still stand. 1931 holds the most, with 64.

Standing records at Box Butte Exp STN by the year they were set
Year set	Standing records
1931	64
1932	34
1933	32
1934	44
1935	23
1936	63
1937	31
1938	20
1939	47
1940	34
1941	15
1942	20
1943	30
1944	13
1945	33
1946	25
1947	32
1948	28
1949	26
1950	42
1951	37
1952	39
1953	31
1954	42
1955	27
1956	30
1957	13
1958	21
1959	34
1960	26
1961	12
1962	41
1963	32
1964	22
1965	30
1966	26
1967	32
1968	18
1969	24
1970	19
1971	26
1972	31
1973	22
1974	25
1975	22
1976	21
1977	28
1978	23
1979	23
1980	23
1981	8

All-Time Record Progression

2 new records

2 all-time records were set at Box Butte Exp STN between 1 January 1979 and 1 January 1979. Each dot is a new record.

When Box Butte Exp STN set new all-time records
Date	Kind	Detail
1979-01-01	Record snow depth	Record snow depth 91.4 cm (36.0 in)
1979-01-01	Record low minimum temperature	Record low minimum temperature -37.2 C (-35.0 F)

Wettest Day of Each Month

Jun: 97.8 mm (3.9 in)

The wettest day on record for each calendar month at Box Butte Exp STN. The most was 97.8 mm (3.9 in) on 28 June 1941.

Record daily precipitation for each month at Box Butte Exp STN
Month	Record daily precipitation (mm)	Date
Jan	32.5 mm (1.3 in)	1 January 1976
Feb	15.2 mm (0.6 in)	21 February 1980
Mar	32.5 mm (1.3 in)	4 March 1935
Apr	68.8 mm (2.7 in)	21 April 1933
May	72.4 mm (2.9 in)	28 May 1978
Jun	97.8 mm (3.9 in)	28 June 1941
Jul	64.5 mm (2.5 in)	7 July 1943
Aug	55.4 mm (2.2 in)	10 August 1974
Sep	51.1 mm (2.0 in)	25 September 1959
Oct	40.9 mm (1.6 in)	14 October 1942
Nov	30.0 mm (1.2 in)	8 November 1944
Dec	21.1 mm (0.8 in)	2 December 1933

Period of Record Coverage

1931 to 1981

51 years of record at Box Butte Exp STN, 1931 to 1981. 5 years have data for under 90 percent of days and are left out of rankings: 1932, 1933, 1935, 1941, 1981.

Days with data per year at Box Butte Exp STN
Year	Days with data	Share of year	Complete
1931	330	90%	Yes
1932	293	80%	No
1933	283	78%	No
1934	353	97%	Yes
1935	301	82%	No
1936	338	92%	Yes
1937	337	92%	Yes
1938	346	95%	Yes
1939	350	96%	Yes
1940	334	91%	Yes
1941	303	83%	No
1942	335	92%	Yes
1943	346	95%	Yes
1944	351	96%	Yes
1945	362	99%	Yes
1946	363	99%	Yes
1947	364	100%	Yes
1948	344	94%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	361	99%	Yes
1953	365	100%	Yes
1954	359	98%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	362	99%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	335	92%	Yes
1961	365	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	361	99%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	333	91%	Yes
1976	333	91%	Yes
1977	364	100%	Yes
1978	364	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	59	16%	No

Latest Records

Latest records at Box Butte Exp STN
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 February 1981	Box Butte Exp STN, US	daily high max (Tie)	17.8 C (64.0 F)	tie	33 years	3 of 100 (Routine)
25 February 1981	Box Butte Exp STN, US	daily high max	19.4 C (66.9 F)	0.5 C (0.9 F)	27 years	13 of 100 (Routine)
20 February 1981	Box Butte Exp STN, US	daily high max	20.0 C (68.0 F)	0.6 C (1.1 F)	46 years	18 of 100 (Routine)
20 February 1981	Box Butte Exp STN, US	daily high min (Tie)	1.1 C (34.0 F)	tie	38 years	4 of 100 (Routine)
17 February 1981	Box Butte Exp STN, US	daily high min	1.1 C (34.0 F)	0.5 C (0.9 F)	4 years	6 of 100 (Routine)
15 February 1981	Box Butte Exp STN, US	daily high min	0.6 C (33.1 F)	1.7 C (3.1 F)	38 years	18 of 100 (Routine)
11 February 1981	Box Butte Exp STN, US	daily low max	-18.3 C (-0.9 F)	6.6 C (11.9 F)	33 years	22 of 100 (Routine)
11 February 1981	Box Butte Exp STN, US	daily low min	-27.8 C (-18.0 F)	1.1 C (2.0 F)	48 years	20 of 100 (Routine)
10 February 1981	Box Butte Exp STN, US	daily low max	-12.2 C (10.0 F)	3.9 C (7.0 F)	48 years	24 of 100 (Routine)
1 February 1981	Box Butte Exp STN, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	3 years	12 of 100 (Routine)
24 January 1981	Box Butte Exp STN, US	monthly high max	20.6 C (69.1 F)	2.3 C (4.1 F)	31 years	26 of 100 (Routine)
5 January 1981	Box Butte Exp STN, US	daily high max (Tie)	12.8 C (55.0 F)	tie	46 years	4 of 100 (Routine)
31 December 1980	Box Butte Exp STN, US	daily high min	1.1 C (34.0 F)	2.2 C (4.0 F)	41 years	20 of 100 (Routine)
28 December 1980	Box Butte Exp STN, US	daily high max	22.8 C (73.0 F)	8.9 C (16.0 F)	33 years	26 of 100 (Routine)
27 December 1980	Box Butte Exp STN, US	daily high max	17.2 C (63.0 F)	1.6 C (2.9 F)	34 years	17 of 100 (Routine)
27 December 1980	Box Butte Exp STN, US	daily high min	2.8 C (37.0 F)	3.4 C (6.1 F)	25 years	17 of 100 (Routine)
18 December 1980	Box Butte Exp STN, US	daily high max	20.6 C (69.1 F)	2.3 C (4.1 F)	18 years	13 of 100 (Routine)
18 December 1980	Box Butte Exp STN, US	daily high min (Tie)	0.0 C (32.0 F)	tie	26 years	3 of 100 (Routine)
17 December 1980	Box Butte Exp STN, US	daily high min	4.4 C (39.9 F)	3.8 C (6.8 F)	41 years	23 of 100 (Routine)
16 December 1980	Box Butte Exp STN, US	daily high min	3.3 C (37.9 F)	1.6 C (2.9 F)	3 years	7 of 100 (Routine)

Climate Trend

41 complete years, 1934 to 1980

One stripe for each of 41 complete years at Box Butte Exp STN, 1934 to 1980. Blue stripes are years cooler than the station's own mean of 8.1 C (46.6 F); red stripes are warmer. The coolest year was 1978, at 6.5 C (43.7 F), and the warmest was 1934, at 10.0 C (50.0 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Box Butte Exp STN as warming stripes, 1934 to 1980
Year	Annual mean temperature	Difference from the station mean
1934	10.0 C	+1.86 C
1936	8.2 C	+0.04 C
1937	7.8 C	-0.35 C
1938	9.4 C	+1.31 C
1939	9.6 C	+1.51 C
1940	8.8 C	+0.70 C
1942	8.0 C	-0.11 C
1943	8.4 C	+0.27 C
1944	7.6 C	-0.51 C
1945	7.6 C	-0.49 C
1947	8.2 C	+0.07 C
1948	8.5 C	+0.41 C
1949	7.8 C	-0.34 C
1950	7.4 C	-0.71 C
1951	6.6 C	-1.50 C
1952	8.4 C	+0.30 C
1953	9.1 C	+0.96 C
1954	9.5 C	+1.38 C
1955	7.5 C	-0.68 C
1956	8.7 C	+0.53 C
1957	7.9 C	-0.28 C
1958	8.1 C	+0.01 C
1959	7.8 C	-0.33 C
1961	7.9 C	-0.28 C
1962	8.3 C	+0.15 C
1963	9.2 C	+1.10 C
1964	8.0 C	-0.18 C
1965	7.8 C	-0.35 C
1966	7.7 C	-0.43 C
1967	7.8 C	-0.29 C
1968	7.5 C	-0.63 C
1969	7.9 C	-0.19 C
1970	7.9 C	-0.24 C
1971	7.6 C	-0.52 C
1972	7.6 C	-0.58 C
1973	7.9 C	-0.23 C
1974	8.1 C	-0.01 C
1977	8.7 C	+0.60 C
1978	6.5 C	-1.65 C
1979	7.4 C	-0.78 C
1980	8.6 C	+0.47 C

The annual mean temperature here has fallen by 0.22 C (0.05 to 0.38) per decade over 1934 to 1980. In Fahrenheit: 0.4 F (0.1 to 0.7) per decade. The slope is a straight line fitted to 41 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Box Butte Exp STN
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.22 C (-0.38 to -0.05) per decade	-0.4 F (-0.7 to -0.1) per decade	1934 to 1980	41	Fall
Mean daily maximum	-0.4 C (-0.6 to -0.2) per decade	-0.7 F (-1.1 to -0.4) per decade	1934 to 1980	41	Fall
Mean daily minimum	-0.03 C (-0.18 to 0.13) per decade	-0.05 F (-0.33 to 0.24) per decade	1934 to 1980	41	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

1931 to 1981

Yearly extremes at Box Butte Exp STN: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.4 C (111.9 F)	1940	38.9 C (102.0 F)	51
Coldest night (TNn)	-37.2 C (-35.0 F)	1979	-29.4 C (-20.9 F)	51
Wettest day (Rx1day)	97.8 mm (3.9 in)	1941	35.8 mm (1.4 in)	51
Wettest five days (Rx5day)	150.6 mm (5.9 in)	1942	60.9 mm (2.4 in)	51
Longest dry spell (CDD)	74 days	1980	37 days	51

Hottest day (TXx)

The hottest day of the year at Box Butte Exp STN, 1931 to 1981. The record is 44.4 C (111.9 F) in 1940, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Box Butte Exp STN by year
Year	Hottest day (TXx)
1931	43.3 C (109.9 F)
1932	38.9 C (102.0 F)
1933	34.4 C (93.9 F)
1934	41.7 C (107.1 F)
1935	38.9 C (102.0 F)
1936	41.7 C (107.1 F)
1937	41.1 C (106.0 F)
1938	38.9 C (102.0 F)
1939	42.8 C (109.0 F)
1940	44.4 C (111.9 F)
1941	38.9 C (102.0 F)
1942	38.9 C (102.0 F)
1943	39.4 C (102.9 F)
1944	38.9 C (102.0 F)
1945	38.3 C (100.9 F)
1946	38.3 C (100.9 F)
1947	39.4 C (102.9 F)
1948	40.6 C (105.1 F)
1949	39.4 C (102.9 F)
1950	35.6 C (96.1 F)
1951	39.4 C (102.9 F)
1952	40.0 C (104.0 F)
1953	38.9 C (102.0 F)
1954	42.2 C (108.0 F)
1955	38.9 C (102.0 F)
1956	38.9 C (102.0 F)
1957	37.8 C (100.0 F)
1958	37.2 C (99.0 F)
1959	38.9 C (102.0 F)
1960	38.9 C (102.0 F)
1961	37.8 C (100.0 F)
1962	37.2 C (99.0 F)
1963	38.3 C (100.9 F)
1964	38.9 C (102.0 F)
1965	37.8 C (100.0 F)
1966	38.9 C (102.0 F)
1967	37.8 C (100.0 F)
1968	38.3 C (100.9 F)
1969	38.9 C (102.0 F)
1970	37.8 C (100.0 F)
1971	37.8 C (100.0 F)
1972	37.2 C (99.0 F)
1973	41.1 C (106.0 F)
1974	37.8 C (100.0 F)
1975	38.9 C (102.0 F)
1976	38.9 C (102.0 F)
1977	38.3 C (100.9 F)
1978	36.7 C (98.1 F)
1979	37.8 C (100.0 F)
1980	39.4 C (102.9 F)
1981	20.6 C (69.1 F)

Coldest night (TNn)

The coldest night of the year at Box Butte Exp STN, 1931 to 1981. The record is -37.2 C (-35.0 F) in 1979, marked on the chart; the median year is -29.4 C (-20.9 F).

Coldest night (TNn) at Box Butte Exp STN by year
Year	Coldest night (TNn)
1931	-23.3 C (-9.9 F)
1932	-31.7 C (-25.1 F)
1933	-32.2 C (-26.0 F)
1934	-31.1 C (-24.0 F)
1935	-32.2 C (-26.0 F)
1936	-36.1 C (-33.0 F)
1937	-30.0 C (-22.0 F)
1938	-25.0 C (-13.0 F)
1939	-26.1 C (-15.0 F)
1940	-30.0 C (-22.0 F)
1941	-26.1 C (-15.0 F)
1942	-30.6 C (-23.1 F)
1943	-31.1 C (-24.0 F)
1944	-23.3 C (-9.9 F)
1945	-27.2 C (-17.0 F)
1946	-29.4 C (-20.9 F)
1947	-26.1 C (-15.0 F)
1948	-30.0 C (-22.0 F)
1949	-28.3 C (-18.9 F)
1950	-32.8 C (-27.0 F)
1951	-30.6 C (-23.1 F)
1952	-26.7 C (-16.1 F)
1953	-21.7 C (-7.1 F)
1954	-26.1 C (-15.0 F)
1955	-27.2 C (-17.0 F)
1956	-24.4 C (-11.9 F)
1957	-28.9 C (-20.0 F)
1958	-25.0 C (-13.0 F)
1959	-31.1 C (-24.0 F)
1960	-31.1 C (-24.0 F)
1961	-22.8 C (-9.0 F)
1962	-31.7 C (-25.1 F)
1963	-34.4 C (-29.9 F)
1964	-31.7 C (-25.1 F)
1965	-24.4 C (-11.9 F)
1966	-33.9 C (-29.0 F)
1967	-28.3 C (-18.9 F)
1968	-31.7 C (-25.1 F)
1969	-25.0 C (-13.0 F)
1970	-26.7 C (-16.1 F)
1971	-27.8 C (-18.0 F)
1972	-31.1 C (-24.0 F)
1973	-31.1 C (-24.0 F)
1974	-32.2 C (-26.0 F)
1975	-29.4 C (-20.9 F)
1976	-26.1 C (-15.0 F)
1977	-27.8 C (-18.0 F)
1978	-30.0 C (-22.0 F)
1979	-37.2 C (-35.0 F)
1980	-25.6 C (-14.1 F)
1981	-27.8 C (-18.0 F)

Wettest day (Rx1day)

The wettest day of the year at Box Butte Exp STN, 1931 to 1981. The record is 97.8 mm (3.9 in) in 1941, marked on the chart; the median year is 35.8 mm (1.4 in).

Wettest day (Rx1day) at Box Butte Exp STN by year
Year	Wettest day (Rx1day)
1931	31.8 mm (1.3 in)
1932	35.1 mm (1.4 in)
1933	68.8 mm (2.7 in)
1934	20.6 mm (0.8 in)
1935	35.8 mm (1.4 in)
1936	26.9 mm (1.1 in)
1937	31.5 mm (1.2 in)
1938	30.2 mm (1.2 in)
1939	21.3 mm (0.8 in)
1940	23.4 mm (0.9 in)
1941	97.8 mm (3.9 in)
1942	56.4 mm (2.2 in)
1943	64.5 mm (2.5 in)
1944	48.3 mm (1.9 in)
1945	49.8 mm (2.0 in)
1946	35.3 mm (1.4 in)
1947	46.5 mm (1.8 in)
1948	45.0 mm (1.8 in)
1949	33.8 mm (1.3 in)
1950	24.1 mm (0.9 in)
1951	36.6 mm (1.4 in)
1952	34.5 mm (1.4 in)
1953	25.4 mm (1.0 in)
1954	42.7 mm (1.7 in)
1955	33.5 mm (1.3 in)
1956	32.5 mm (1.3 in)
1957	40.1 mm (1.6 in)
1958	27.4 mm (1.1 in)
1959	51.1 mm (2.0 in)
1960	30.5 mm (1.2 in)
1961	34.5 mm (1.4 in)
1962	40.4 mm (1.6 in)
1963	52.8 mm (2.1 in)
1964	21.1 mm (0.8 in)
1965	31.8 mm (1.3 in)
1966	27.9 mm (1.1 in)
1967	34.5 mm (1.4 in)
1968	36.3 mm (1.4 in)
1969	37.3 mm (1.5 in)
1970	48.3 mm (1.9 in)
1971	38.9 mm (1.5 in)
1972	41.1 mm (1.6 in)
1973	50.8 mm (2.0 in)
1974	55.4 mm (2.2 in)
1975	34.5 mm (1.4 in)
1976	42.7 mm (1.7 in)
1977	50.8 mm (2.0 in)
1978	72.4 mm (2.9 in)
1979	37.8 mm (1.5 in)
1980	27.9 mm (1.1 in)
1981	3.8 mm (0.15 in)

Wettest five days (Rx5day)

The wettest five days of the year at Box Butte Exp STN, 1931 to 1981. The record is 150.6 mm (5.9 in) in 1942, marked on the chart; the median year is 60.9 mm (2.4 in).

Wettest five days (Rx5day) at Box Butte Exp STN by year
Year	Wettest five days (Rx5day)
1931	34.8 mm (1.4 in)
1932	61.2 mm (2.4 in)
1933	104.9 mm (4.1 in)
1934	32.5 mm (1.3 in)
1935	93.4 mm (3.7 in)
1936	73.0 mm (2.9 in)
1937	39.9 mm (1.6 in)
1938	71.9 mm (2.8 in)
1939	23.6 mm (0.9 in)
1940	27.5 mm (1.1 in)
1941	104.1 mm (4.1 in)
1942	150.6 mm (5.9 in)
1943	64.5 mm (2.5 in)
1944	58.5 mm (2.3 in)
1945	59.9 mm (2.4 in)
1946	41.4 mm (1.6 in)
1947	82.1 mm (3.2 in)
1948	62.2 mm (2.4 in)
1949	62.6 mm (2.5 in)
1950	68.8 mm (2.7 in)
1951	81.8 mm (3.2 in)
1952	59.4 mm (2.3 in)
1953	49.0 mm (1.9 in)
1954	53.6 mm (2.1 in)
1955	55.1 mm (2.2 in)
1956	50.9 mm (2.0 in)
1957	60.9 mm (2.4 in)
1958	35.0 mm (1.4 in)
1959	78.2 mm (3.1 in)
1960	42.0 mm (1.7 in)
1961	62.2 mm (2.4 in)
1962	58.0 mm (2.3 in)
1963	137.9 mm (5.4 in)
1964	25.4 mm (1.0 in)
1965	47.8 mm (1.9 in)
1966	59.7 mm (2.4 in)
1967	59.9 mm (2.4 in)
1968	68.1 mm (2.7 in)
1969	80.8 mm (3.2 in)
1970	90.4 mm (3.6 in)
1971	109.8 mm (4.3 in)
1972	61.3 mm (2.4 in)
1973	96.5 mm (3.8 in)
1974	55.4 mm (2.2 in)
1975	36.3 mm (1.4 in)
1976	66.3 mm (2.6 in)
1977	65.5 mm (2.6 in)
1978	121.4 mm (4.8 in)
1979	54.4 mm (2.1 in)
1980	31.2 mm (1.2 in)
1981	4.3 mm (0.17 in)

Longest dry spell (CDD)

The longest dry spell of the year at Box Butte Exp STN, 1931 to 1981. The record is 74 days in 1980, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Box Butte Exp STN by year
Year	Longest dry spell (CDD)
1931	40 days
1932	33 days
1933	66 days
1934	39 days
1935	43 days
1936	32 days
1937	25 days
1938	33 days
1939	73 days
1940	35 days
1941	27 days
1942	37 days
1943	38 days
1944	24 days
1945	21 days
1946	27 days
1947	23 days
1948	26 days
1949	50 days
1950	42 days
1951	39 days
1952	35 days
1953	62 days
1954	70 days
1955	28 days
1956	41 days
1957	64 days
1958	47 days
1959	34 days
1960	28 days
1961	48 days
1962	28 days
1963	31 days
1964	41 days
1965	37 days
1966	42 days
1967	25 days
1968	41 days
1969	32 days
1970	31 days
1971	30 days
1972	41 days
1973	39 days
1974	40 days
1975	32 days
1976	26 days
1977	54 days
1978	33 days
1979	39 days
1980	74 days
1981	18 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

41 years with a frost

Across 41 years with a frost, the median last spring frost at Box Butte Exp STN falls on 14 May and the median first autumn frost on 22 September, which leaves a median of 131 days between them.

Fitted over all years, the growing season changes by +0.9 days per decade at this station.

Frost dates and growing season at Box Butte Exp STN
Measure	Median, all years	Earliest period	Recent period (1948 to 1980)	Recent against earliest	Fitted trend
Last spring frost	14 May	n/a	14 May	n/a	-1.2 days per decade
First autumn frost	22 September	n/a	22 September	n/a	-0.3 days per decade
Growing days	131 days	n/a	131 days	n/a	+0.9 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, 1934 to 1980

A day with at least 36.5 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 74.9 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Box Butte Exp STN: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	36.5 mm (1.4 in)
5 years	47.4 mm (1.9 in)
10 years	54.4 mm (2.1 in)
25 years	62.9 mm (2.5 in)
50 years	69.0 mm (2.7 in)	Longer than the 43 years of record
100 years	74.9 mm (2.9 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 1934 to 1980.

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: 72.4 mm (2.9 in) in 1978; 64.5 mm (2.5 in) in 1943; 56.4 mm (2.2 in) in 1942.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Box Butte Exp STN standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Box Butte Exp STN 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).