Imperial Weather Records (USC00143946)

Record envelope, standing records and threshold days for Imperial (USC00143946), Kansas, United States, with 44 years of record.

Key Facts for Imperial

Imperial (USC00143946) is a weather station in Kansas, United States at 38.28 latitude and -100.65 longitude, 857 m (2,812 ft) above sea level.
The station reports from 1940 to 1983, 44 years of record.
1,464 records set at Imperial still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Imperial set a daily record snowfall of 5.1 cm (2.0 in) on 27 November 1983.

About the Station

Location: Kansas, United States, 38.28 latitude, -100.65 longitude.
Elevation: 857 m (2,812 ft).
Period of record: 1940 to 1983, 44 years.
Eligible elements: 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 Imperial. 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 Imperial, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.9 C (75.0 F)	-27.2 C (-17.0 F)	n/a	n/a
Feb	29.4 C (84.9 F)	-27.2 C (-17.0 F)	n/a	n/a
Mar	33.3 C (91.9 F)	-27.2 C (-17.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-12.2 C (10.0 F)	n/a	n/a
May	38.9 C (102.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	42.8 C (109.0 F)	1.1 C (34.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	7.8 C (46.0 F)	n/a	n/a
Aug	42.2 C (108.0 F)	5.6 C (42.1 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	35.0 C (95.0 F)	-8.3 C (17.1 F)	n/a	n/a
Nov	31.7 C (89.1 F)	-22.2 C (-8.0 F)	n/a	n/a
Dec	26.1 C (79.0 F)	-23.9 C (-11.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Imperial still stand. 1963 holds the most, with 94.

Standing records at Imperial by the year they were set
Year set	Standing records
1945	2
1948	2
1961	59
1962	71
1963	94
1964	74
1965	64
1966	64
1967	64
1968	70
1969	76
1970	67
1971	66
1972	63
1973	62
1974	50
1975	64
1976	72
1977	60
1978	77
1979	62
1980	63
1981	18
1982	33
1983	67

All-Time Record Progression

1 new records

1 all-time records were set at Imperial between 16 March 1970 and 16 March 1970. Each dot is a new record.

Wettest Day of Each Month

Jun: 120.7 mm (4.8 in)

The wettest day on record for each calendar month at Imperial. The most was 120.7 mm (4.8 in) on 16 June 1968.

Record daily precipitation for each month at Imperial
Month	Record daily precipitation (mm)	Date
Jan	29.2 mm (1.1 in)	27 January 1944
Feb	27.2 mm (1.1 in)	4 February 1964
Mar	41.9 mm (1.6 in)	24 March 1980
Apr	66.5 mm (2.6 in)	13 April 1955
May	65.8 mm (2.6 in)	21 May 1951
Jun	120.7 mm (4.8 in)	16 June 1968
Jul	72.4 mm (2.9 in)	13 July 1959
Aug	74.9 mm (2.9 in)	21 August 1966
Sep	92.7 mm (3.6 in)	21 September 1963
Oct	83.8 mm (3.3 in)	18 October 1965
Nov	30.5 mm (1.2 in)	16 November 1971
Dec	19.8 mm (0.8 in)	28 December 1979

Period of Record Coverage

1961 to 1983

23 years of record at Imperial, 1961 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1968, 1974, 1981, 1982, 1983.

Days with data per year at Imperial
Year	Days with data	Share of year	Complete
1961	354	97%	Yes
1962	363	99%	Yes
1963	362	99%	Yes
1964	355	97%	Yes
1965	364	100%	Yes
1966	358	98%	Yes
1967	365	100%	Yes
1968	328	90%	No
1969	363	99%	Yes
1970	363	99%	Yes
1971	355	97%	Yes
1972	332	91%	Yes
1973	330	90%	Yes
1974	326	89%	No
1975	356	98%	Yes
1976	356	97%	Yes
1977	354	97%	Yes
1978	355	97%	Yes
1979	365	100%	Yes
1980	360	98%	Yes
1981	62	17%	No
1982	231	63%	No
1983	319	87%	No

Latest Records

Latest records at Imperial
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 November 1983	Imperial, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	6 years	12 of 100 (Routine)
13 June 1983	Imperial, US	daily rain	26.7 mm (1.1 in)	2.8 mm (0.11 in)	33 years	16 of 100 (Routine)
7 April 1983	Imperial, US	daily snow depth	5.1 cm (2.0 in)	2.6 cm (1.0 in)	40 years	18 of 100 (Routine)
6 April 1983	Imperial, US	daily snow depth	7.6 cm (3.0 in)	7.6 cm (3.0 in)	33 years	20 of 100 (Routine)
5 April 1983	Imperial, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	42 years	20 of 100 (Routine)
5 April 1983	Imperial, US	daily snow depth	7.6 cm (3.0 in)	7.6 cm (3.0 in)	33 years	20 of 100 (Routine)
4 April 1983	Imperial, US	daily snowfall	5.1 cm (2.0 in)	1.3 cm (0.5 in)	8 years	9 of 100 (Routine)
4 April 1983	Imperial, US	daily rain (Tie)	5.1 mm (0.20 in)	tie	4 years	1 of 100 (Routine)
4 April 1983	Imperial, US	daily snow depth (Tie)	5.1 cm (2.0 in)	tie	8 years	1 of 100 (Routine)
21 March 1983	Imperial, US	daily snow depth	20.3 cm (8.0 in)	12.7 cm (5.0 in)	38 years	29 of 100 (Routine)
20 March 1983	Imperial, US	daily snow depth	22.9 cm (9.0 in)	15.3 cm (6.0 in)	32 years	30 of 100 (Routine)
20 March 1983	Imperial, US	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	18 years	14 of 100 (Routine)
19 March 1983	Imperial, US	daily snowfall	12.7 cm (5.0 in)	2.5 cm (1.0 in)	32 years	17 of 100 (Routine)
19 March 1983	Imperial, US	daily snow depth (Tie)	12.7 cm (5.0 in)	tie	38 years	3 of 100 (Routine)
4 February 1983	Imperial, US	daily snow depth (Tie)	15.2 cm (6.0 in)	tie	27 years	3 of 100 (Routine)
1 February 1983	Imperial, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	27 years	41 of 100 (Notable)
1 February 1983	Imperial, US	daily rain	13.2 mm (0.5 in)	8.6 mm (0.34 in)	24 years	20 of 100 (Routine)
19 January 1983	Imperial, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	24 years	17 of 100 (Routine)
31 December 1982	Imperial, US	daily snow depth (Tie)	10.2 cm (4.0 in)	tie	16 years	2 of 100 (Routine)
28 December 1982	Imperial, US	monthly snowfall (Tie)	15.2 cm (6.0 in)	tie	40 years	6 of 100 (Routine)

Climate Trend

16 complete years, 1963 to 1980

One stripe for each of 16 complete years at Imperial, 1963 to 1980. Blue stripes are years cooler than the station's own mean of 12.1 C (53.8 F); red stripes are warmer. The coolest year was 1979, at 10.7 C (51.3 F), and the warmest was 1963, at 13.6 C (56.5 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Imperial as warming stripes, 1963 to 1980
Year	Annual mean temperature	Difference from the station mean
1963	13.6 C	+1.48 C
1964	12.6 C	+0.48 C
1965	12.5 C	+0.37 C
1966	11.7 C	-0.41 C
1967	12.3 C	+0.20 C
1969	11.7 C	-0.42 C
1970	12.0 C	-0.12 C
1971	12.0 C	-0.09 C
1972	11.6 C	-0.55 C
1973	11.2 C	-0.95 C
1975	12.3 C	+0.22 C
1976	12.8 C	+0.64 C
1977	13.5 C	+1.40 C
1978	11.5 C	-0.63 C
1979	10.7 C	-1.41 C
1980	12.0 C	-0.17 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

1940 to 1983

Yearly extremes at Imperial: 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)	1963	40.6 C (105.1 F)	23
Coldest night (TNn)	-27.2 C (-17.0 F)	1948	-23.9 C (-11.0 F)	26
Wettest day (Rx1day)	120.7 mm (4.8 in)	1968	49.0 mm (1.9 in)	44
Wettest five days (Rx5day)	162.4 mm (6.4 in)	1946	72.8 mm (2.9 in)	44
Longest dry spell (CDD)	74 days	1954	43 days	44

Hottest day (TXx)

The hottest day of the year at Imperial, 1940 to 1983. The record is 42.8 C (109.0 F) in 1963, marked on the chart; the median year is 40.6 C (105.1 F).

Hottest day (TXx) at Imperial by year
Year	Hottest day (TXx)
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	40.6 C (105.1 F)
1962	40.6 C (105.1 F)
1963	42.8 C (109.0 F)
1964	42.2 C (108.0 F)
1965	39.4 C (102.9 F)
1966	41.1 C (106.0 F)
1967	38.9 C (102.0 F)
1968	42.8 C (109.0 F)
1969	41.1 C (106.0 F)
1970	41.7 C (107.1 F)
1971	42.8 C (109.0 F)
1972	36.7 C (98.1 F)
1973	40.0 C (104.0 F)
1974	41.7 C (107.1 F)
1975	39.4 C (102.9 F)
1976	39.4 C (102.9 F)
1977	38.9 C (102.0 F)
1978	41.1 C (106.0 F)
1979	40.0 C (104.0 F)
1980	42.8 C (109.0 F)
1981	30.0 C (86.0 F)
1982	38.9 C (102.0 F)
1983	40.0 C (104.0 F)

Coldest night (TNn)

The coldest night of the year at Imperial, 1940 to 1983. The record is -27.2 C (-17.0 F) in 1948, marked on the chart; the median year is -23.9 C (-11.0 F).

Coldest night (TNn) at Imperial by year
Year	Coldest night (TNn)
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	-1.7 C (28.9 F)
1946	n/a
1947	-26.7 C (-16.1 F)
1948	-27.2 C (-17.0 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	-12.8 C (9.0 F)
1962	-27.2 C (-17.0 F)
1963	-25.6 C (-14.1 F)
1964	-22.2 C (-8.0 F)
1965	-21.7 C (-7.1 F)
1966	-25.0 C (-13.0 F)
1967	-23.9 C (-11.0 F)
1968	-23.9 C (-11.0 F)
1969	-21.7 C (-7.1 F)
1970	-20.6 C (-5.1 F)
1971	-25.6 C (-14.1 F)
1972	-23.9 C (-11.0 F)
1973	-21.7 C (-7.1 F)
1974	-27.2 C (-17.0 F)
1975	-20.0 C (-4.0 F)
1976	-22.2 C (-8.0 F)
1977	-23.3 C (-9.9 F)
1978	-24.4 C (-11.9 F)
1979	-27.2 C (-17.0 F)
1980	-22.8 C (-9.0 F)
1981	-26.1 C (-15.0 F)
1982	-27.2 C (-17.0 F)
1983	-15.0 C (5.0 F)

Wettest day (Rx1day)

The wettest day of the year at Imperial, 1940 to 1983. The record is 120.7 mm (4.8 in) in 1968, marked on the chart; the median year is 49.0 mm (1.9 in).

Wettest day (Rx1day) at Imperial by year
Year	Wettest day (Rx1day)
1940	58.7 mm (2.3 in)
1941	66.0 mm (2.6 in)
1942	40.4 mm (1.6 in)
1943	55.9 mm (2.2 in)
1944	52.1 mm (2.1 in)
1945	49.0 mm (1.9 in)
1946	87.1 mm (3.4 in)
1947	30.5 mm (1.2 in)
1948	66.0 mm (2.6 in)
1949	69.9 mm (2.8 in)
1950	74.7 mm (2.9 in)
1951	65.8 mm (2.6 in)
1952	30.5 mm (1.2 in)
1953	59.7 mm (2.4 in)
1954	40.1 mm (1.6 in)
1955	66.5 mm (2.6 in)
1956	27.9 mm (1.1 in)
1957	54.6 mm (2.1 in)
1958	44.7 mm (1.8 in)
1959	72.4 mm (2.9 in)
1960	38.6 mm (1.5 in)
1961	47.0 mm (1.9 in)
1962	41.4 mm (1.6 in)
1963	92.7 mm (3.6 in)
1964	43.4 mm (1.7 in)
1965	83.8 mm (3.3 in)
1966	74.9 mm (2.9 in)
1967	44.5 mm (1.8 in)
1968	120.7 mm (4.8 in)
1969	54.4 mm (2.1 in)
1970	52.1 mm (2.1 in)
1971	50.3 mm (2.0 in)
1972	45.7 mm (1.8 in)
1973	37.6 mm (1.5 in)
1974	28.7 mm (1.1 in)
1975	47.8 mm (1.9 in)
1976	47.0 mm (1.9 in)
1977	38.1 mm (1.5 in)
1978	44.5 mm (1.8 in)
1979	50.8 mm (2.0 in)
1980	49.0 mm (1.9 in)
1981	34.0 mm (1.3 in)
1982	32.5 mm (1.3 in)
1983	30.2 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Imperial, 1940 to 1983. The record is 162.4 mm (6.4 in) in 1946, marked on the chart; the median year is 72.8 mm (2.9 in).

Wettest five days (Rx5day) at Imperial by year
Year	Wettest five days (Rx5day)
1940	70.9 mm (2.8 in)
1941	79.8 mm (3.1 in)
1942	74.3 mm (2.9 in)
1943	81.0 mm (3.2 in)
1944	107.5 mm (4.2 in)
1945	58.4 mm (2.3 in)
1946	162.4 mm (6.4 in)
1947	45.5 mm (1.8 in)
1948	108.0 mm (4.3 in)
1949	135.9 mm (5.4 in)
1950	119.7 mm (4.7 in)
1951	93.8 mm (3.7 in)
1952	44.0 mm (1.7 in)
1953	59.9 mm (2.4 in)
1954	54.8 mm (2.2 in)
1955	70.3 mm (2.8 in)
1956	36.6 mm (1.4 in)
1957	81.2 mm (3.2 in)
1958	91.3 mm (3.6 in)
1959	110.7 mm (4.4 in)
1960	48.5 mm (1.9 in)
1961	67.3 mm (2.6 in)
1962	85.6 mm (3.4 in)
1963	158.3 mm (6.2 in)
1964	103.1 mm (4.1 in)
1965	122.4 mm (4.8 in)
1966	83.8 mm (3.3 in)
1967	86.2 mm (3.4 in)
1968	126.5 mm (5.0 in)
1969	93.8 mm (3.7 in)
1970	63.5 mm (2.5 in)
1971	50.8 mm (2.0 in)
1972	85.1 mm (3.4 in)
1973	55.4 mm (2.2 in)
1974	49.5 mm (1.9 in)
1975	61.2 mm (2.4 in)
1976	54.6 mm (2.1 in)
1977	71.3 mm (2.8 in)
1978	61.8 mm (2.4 in)
1979	60.2 mm (2.4 in)
1980	87.1 mm (3.4 in)
1981	45.8 mm (1.8 in)
1982	57.1 mm (2.2 in)
1983	67.9 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Imperial, 1940 to 1983. The record is 74 days in 1954, marked on the chart; the median year is 43 days.

Longest dry spell (CDD) at Imperial by year
Year	Longest dry spell (CDD)
1940	21 days
1941	33 days
1942	38 days
1943	31 days
1944	33 days
1945	28 days
1946	48 days
1947	33 days
1948	27 days
1949	62 days
1950	58 days
1951	41 days
1952	55 days
1953	59 days
1954	74 days
1955	49 days
1956	59 days
1957	43 days
1958	38 days
1959	44 days
1960	26 days
1961	35 days
1962	54 days
1963	46 days
1964	38 days
1965	38 days
1966	37 days
1967	36 days
1968	48 days
1969	48 days
1970	74 days
1971	55 days
1972	70 days
1973	28 days
1974	58 days
1975	48 days
1976	63 days
1977	63 days
1978	50 days
1979	36 days
1980	31 days
1981	43 days
1982	33 days
1983	35 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.

Rainfall Return Levels

42 years, 1941 to 1983

A day with at least 49.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 122.0 mm (4.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Imperial: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.5 mm (1.9 in)
5 years	66.5 mm (2.6 in)
10 years	78.6 mm (3.1 in)
25 years	95.1 mm (3.7 in)
50 years	108.2 mm (4.3 in)	Longer than the 42 years of record
100 years	122.0 mm (4.8 in)	Longer than the 42 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, 42 years of values from 1941 to 1983.

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: 120.7 mm (4.8 in) in 1968; 92.7 mm (3.6 in) in 1963; 87.1 mm (3.4 in) in 1946.

Download the Data

Data for Imperial standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Imperial 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).