Roca Weather Records (USC00257246)

Record envelope, standing records and threshold days for Roca (USC00257246), Nebraska, United States, with 59 years of record.

Key Facts for Roca

Roca (USC00257246) is a weather station in Nebraska, United States at 40.66 latitude and -96.66 longitude, 378 m (1,240 ft) above sea level.
The station reports from 1951 to 2009, 59 years of record.
60 records set at Roca still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Roca set a daily record precipitation of 44.5 mm (1.8 in) on 6 June 2009.

About the Station

Location: Nebraska, United States, 40.66 latitude, -96.66 longitude.
Elevation: 378 m (1,240 ft).
Period of record: 1951 to 2009, 59 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 Roca. 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 Roca, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	-15.0 C (5.0 F)	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

60 standing records

60 records at Roca still stand. 1969 holds the most, with 60.

Wettest Day of Each Month

Jun: 140.5 mm (5.5 in)

The wettest day on record for each calendar month at Roca. The most was 140.5 mm (5.5 in) on 29 June 1965.

Record daily precipitation for each month at Roca
Month	Record daily precipitation (mm)	Date
Jan	38.1 mm (1.5 in)	4 January 1973
Feb	38.1 mm (1.5 in)	12 February 1965
Mar	53.1 mm (2.1 in)	20 March 1984
Apr	84.8 mm (3.3 in)	4 April 1969
May	101.6 mm (4.0 in)	8 May 1996
Jun	140.5 mm (5.5 in)	29 June 1965
Jul	125.7 mm (4.9 in)	22 July 1978
Aug	96.5 mm (3.8 in)	13 August 1982
Sep	121.9 mm (4.8 in)	9 September 1989
Oct	109.2 mm (4.3 in)	10 October 1973
Nov	53.3 mm (2.1 in)	9 November 1977
Dec	68.6 mm (2.7 in)	16 December 1984

Latest Records

Latest records at Roca
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
6 June 2009	Roca, US	daily rain	44.5 mm (1.8 in)	7.7 mm (0.30 in)	16 years	14 of 100 (Routine)
24 March 2009	Roca, US	daily rain (Tie)	32.5 mm (1.3 in)	tie	36 years	3 of 100 (Routine)
12 November 2008	Roca, US	daily rain	9.4 mm (0.37 in)	0.5 mm (0.02 in)	20 years	11 of 100 (Routine)
22 October 2008	Roca, US	daily rain	44.5 mm (1.8 in)	21.9 mm (0.9 in)	36 years	30 of 100 (Routine)
12 September 2008	Roca, US	daily rain	33.5 mm (1.3 in)	8.9 mm (0.35 in)	47 years	25 of 100 (Routine)
16 July 2008	Roca, US	daily rain	47.8 mm (1.9 in)	7.2 mm (0.28 in)	14 years	12 of 100 (Routine)
12 June 2008	Roca, US	daily rain	49.5 mm (1.9 in)	17.0 mm (0.7 in)	24 years	22 of 100 (Routine)
5 June 2008	Roca, US	daily rain	56.1 mm (2.2 in)	12.9 mm (0.5 in)	14 years	16 of 100 (Routine)
25 April 2008	Roca, US	daily rain	17.3 mm (0.7 in)	1.0 mm (0.04 in)	29 years	13 of 100 (Routine)
19 April 2008	Roca, US	daily rain	10.9 mm (0.4 in)	0.2 mm (0.01 in)	15 years	9 of 100 (Routine)
17 April 2008	Roca, US	daily rain	21.8 mm (0.9 in)	0.7 mm (0.03 in)	48 years	19 of 100 (Routine)
5 November 2002	Roca, US	daily rain (Tie)	7.6 mm (0.30 in)	tie	43 years	4 of 100 (Routine)
30 October 2002	Roca, US	daily snowfall	2.5 cm (1.0 in)	2.5 cm (1.0 in)	51 years	20 of 100 (Routine)
25 October 2002	Roca, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	51 years	20 of 100 (Routine)
24 October 2002	Roca, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	51 years	35 of 100 (Notable)
24 October 2002	Roca, US	daily snow depth	7.6 cm (3.0 in)	7.6 cm (3.0 in)	51 years	20 of 100 (Routine)
4 October 2002	Roca, US	daily rain	41.9 mm (1.6 in)	16.0 mm (0.6 in)	16 years	20 of 100 (Routine)
2 October 2002	Roca, US	daily rain	32.5 mm (1.3 in)	18.5 mm (0.7 in)	4 years	19 of 100 (Routine)
14 September 2002	Roca, US	daily rain	23.6 mm (0.9 in)	1.0 mm (0.04 in)	32 years	14 of 100 (Routine)
7 July 2002	Roca, US	daily rain	77.5 mm (3.1 in)	49.3 mm (1.9 in)	24 years	36 of 100 (Notable)

Extremes by Year

1951 to 2009

Yearly extremes at Roca: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Coldest night (TNn)	-15.0 C (5.0 F)	1969	-15.0 C (5.0 F)	1
Wettest day (Rx1day)	140.5 mm (5.5 in)	1965	61.5 mm (2.4 in)	54
Wettest five days (Rx5day)	201.4 mm (7.9 in)	1973	91.6 mm (3.6 in)	54
Longest dry spell (CDD)	62 days	1976	31 days	54

Coldest night (TNn)

The coldest night of the year at Roca, 1951 to 2009. The record is -15.0 C (5.0 F) in 1969, marked on the chart; the median year is -15.0 C (5.0 F).

Coldest night (TNn) at Roca by year
Year	Coldest night (TNn)
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	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	-15.0 C (5.0 F)
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2008	n/a
2009	n/a

Wettest day (Rx1day)

The wettest day of the year at Roca, 1951 to 2009. The record is 140.5 mm (5.5 in) in 1965, marked on the chart; the median year is 61.5 mm (2.4 in).

Wettest day (Rx1day) at Roca by year
Year	Wettest day (Rx1day)
1951	8.9 mm (0.35 in)
1952	10.2 mm (0.4 in)
1953	20.3 mm (0.8 in)
1954	58.2 mm (2.3 in)
1955	50.8 mm (2.0 in)
1956	82.0 mm (3.2 in)
1957	45.0 mm (1.8 in)
1958	111.8 mm (4.4 in)
1959	70.4 mm (2.8 in)
1960	50.3 mm (2.0 in)
1961	52.8 mm (2.1 in)
1962	65.0 mm (2.6 in)
1963	90.9 mm (3.6 in)
1964	44.7 mm (1.8 in)
1965	140.5 mm (5.5 in)
1966	63.5 mm (2.5 in)
1967	90.2 mm (3.6 in)
1968	82.6 mm (3.3 in)
1969	84.8 mm (3.3 in)
1970	49.3 mm (1.9 in)
1971	53.3 mm (2.1 in)
1972	56.6 mm (2.2 in)
1973	109.2 mm (4.3 in)
1974	53.6 mm (2.1 in)
1975	62.5 mm (2.5 in)
1976	71.9 mm (2.8 in)
1977	57.4 mm (2.3 in)
1978	125.7 mm (4.9 in)
1979	73.7 mm (2.9 in)
1980	43.2 mm (1.7 in)
1981	37.6 mm (1.5 in)
1982	96.5 mm (3.8 in)
1983	33.5 mm (1.3 in)
1984	90.2 mm (3.6 in)
1985	60.5 mm (2.4 in)
1986	78.7 mm (3.1 in)
1987	82.6 mm (3.3 in)
1988	57.9 mm (2.3 in)
1989	121.9 mm (4.8 in)
1990	106.7 mm (4.2 in)
1991	25.4 mm (1.0 in)
1992	110.5 mm (4.4 in)
1993	63.5 mm (2.5 in)
1994	67.3 mm (2.6 in)
1995	48.3 mm (1.9 in)
1996	101.6 mm (4.0 in)
1997	57.4 mm (2.3 in)
1998	41.7 mm (1.6 in)
1999	64.3 mm (2.5 in)
2000	49.5 mm (1.9 in)
2001	49.8 mm (2.0 in)
2002	77.5 mm (3.1 in)
2008	56.1 mm (2.2 in)
2009	44.5 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Roca, 1951 to 2009. The record is 201.4 mm (7.9 in) in 1973, marked on the chart; the median year is 91.6 mm (3.6 in).

Wettest five days (Rx5day) at Roca by year
Year	Wettest five days (Rx5day)
1951	8.9 mm (0.35 in)
1952	10.2 mm (0.4 in)
1953	20.3 mm (0.8 in)
1954	92.4 mm (3.6 in)
1955	50.8 mm (2.0 in)
1956	116.6 mm (4.6 in)
1957	101.1 mm (4.0 in)
1958	166.9 mm (6.6 in)
1959	127.5 mm (5.0 in)
1960	61.0 mm (2.4 in)
1961	82.0 mm (3.2 in)
1962	75.9 mm (3.0 in)
1963	132.5 mm (5.2 in)
1964	102.5 mm (4.0 in)
1965	186.7 mm (7.4 in)
1966	65.8 mm (2.6 in)
1967	129.0 mm (5.1 in)
1968	90.7 mm (3.6 in)
1969	94.8 mm (3.7 in)
1970	82.9 mm (3.3 in)
1971	101.0 mm (4.0 in)
1972	67.2 mm (2.6 in)
1973	201.4 mm (7.9 in)
1974	67.1 mm (2.6 in)
1975	100.1 mm (3.9 in)
1976	88.4 mm (3.5 in)
1977	67.3 mm (2.6 in)
1978	130.6 mm (5.1 in)
1979	103.3 mm (4.1 in)
1980	81.3 mm (3.2 in)
1981	68.1 mm (2.7 in)
1982	110.5 mm (4.4 in)
1983	63.0 mm (2.5 in)
1984	174.8 mm (6.9 in)
1985	78.1 mm (3.1 in)
1986	128.3 mm (5.1 in)
1987	97.0 mm (3.8 in)
1988	68.6 mm (2.7 in)
1989	134.3 mm (5.3 in)
1990	112.3 mm (4.4 in)
1991	49.7 mm (2.0 in)
1992	136.2 mm (5.4 in)
1993	139.7 mm (5.5 in)
1994	89.4 mm (3.5 in)
1995	74.8 mm (2.9 in)
1996	172.9 mm (6.8 in)
1997	98.0 mm (3.9 in)
1998	82.4 mm (3.2 in)
1999	74.5 mm (2.9 in)
2000	70.6 mm (2.8 in)
2001	97.3 mm (3.8 in)
2002	99.1 mm (3.9 in)
2008	75.2 mm (3.0 in)
2009	63.0 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Roca, 1951 to 2009. The record is 62 days in 1976, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Roca by year
Year	Longest dry spell (CDD)
1951	20 days
1952	27 days
1953	28 days
1954	49 days
1955	51 days
1956	41 days
1957	41 days
1958	54 days
1959	34 days
1960	29 days
1961	25 days
1962	22 days
1963	33 days
1964	34 days
1965	23 days
1966	21 days
1967	34 days
1968	43 days
1969	18 days
1970	42 days
1971	31 days
1972	26 days
1973	22 days
1974	42 days
1975	49 days
1976	62 days
1977	38 days
1978	22 days
1979	35 days
1980	27 days
1981	31 days
1982	21 days
1983	29 days
1984	44 days
1985	24 days
1986	33 days
1987	27 days
1988	41 days
1989	44 days
1990	25 days
1991	25 days
1992	19 days
1993	24 days
1994	26 days
1995	31 days
1996	24 days
1997	32 days
1998	25 days
1999	49 days
2000	48 days
2001	24 days
2002	35 days
2008	32 days
2009	17 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

48 years, 1954 to 2002

A day with at least 66.6 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 157.2 mm (6.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Roca: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	66.6 mm (2.6 in)
5 years	90.4 mm (3.6 in)
10 years	106.4 mm (4.2 in)
25 years	126.7 mm (5.0 in)
50 years	141.9 mm (5.6 in)	Longer than the 48 years of record
100 years	157.2 mm (6.2 in)	Longer than the 48 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, 48 years of values from 1954 to 2002.

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: 140.5 mm (5.5 in) in 1965; 125.7 mm (4.9 in) in 1978; 121.9 mm (4.8 in) in 1989.

Download the Data

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

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