Glenrock 14 SSE Weather Records (USC00483960)

Record envelope, standing records and threshold days for Glenrock 14 SSE (USC00483960), Wyoming, United States, with 39 years of record.

Key Facts for Glenrock 14 SSE

Glenrock 14 SSE (USC00483960) is a weather station in Wyoming, United States at 42.67 latitude and -105.82 longitude, 1,961 m (6,434 ft) above sea level.
The station reports from 1949 to 1987, 39 years of record.
1,464 records set at Glenrock 14 SSE still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Glenrock 14 SSE set a daily record precipitation of 11.2 mm (0.4 in) on 26 May 1987.

About the Station

Location: Wyoming, United States, 42.67 latitude, -105.82 longitude.
Elevation: 1,961 m (6,434 ft).
Period of record: 1949 to 1987, 39 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 Glenrock 14 SSE. 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 Glenrock 14 SSE, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-36.1 C (-33.0 F)	n/a	n/a
Feb	15.6 C (60.1 F)	-33.9 C (-29.0 F)	n/a	n/a
Mar	20.6 C (69.1 F)	-33.3 C (-27.9 F)	n/a	n/a
Apr	25.6 C (78.1 F)	-23.3 C (-9.9 F)	n/a	n/a
May	32.2 C (90.0 F)	-12.2 C (10.0 F)	n/a	n/a
Jun	33.3 C (91.9 F)	-3.9 C (25.0 F)	n/a	n/a
Jul	35.6 C (96.1 F)	-1.7 C (28.9 F)	n/a	n/a
Aug	35.0 C (95.0 F)	-3.9 C (25.0 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-12.8 C (9.0 F)	n/a	n/a
Oct	26.7 C (80.1 F)	-20.6 C (-5.1 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-40.0 C (-40.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Glenrock 14 SSE still stand. 1965 holds the most, with 83.

Standing records at Glenrock 14 SSE by the year they were set
Year set	Standing records
1963	30
1964	68
1965	83
1966	79
1967	72
1968	52
1969	74
1970	41
1971	52
1972	53
1973	61
1974	41
1975	60
1976	50
1977	39
1978	79
1979	49
1980	69
1981	69
1982	49
1983	68
1984	50
1985	64
1986	64
1987	48

Wettest Day of Each Month

May: 109.2 mm (4.3 in)

The wettest day on record for each calendar month at Glenrock 14 SSE. The most was 109.2 mm (4.3 in) on 14 May 1965.

Record daily precipitation for each month at Glenrock 14 SSE
Month	Record daily precipitation (mm)	Date
Jan	22.9 mm (0.9 in)	22 January 1965
Feb	16.3 mm (0.6 in)	9 February 1953
Mar	27.9 mm (1.1 in)	6 March 1983
Apr	45.7 mm (1.8 in)	19 April 1973
May	109.2 mm (4.3 in)	14 May 1965
Jun	95.3 mm (3.8 in)	12 June 1970
Jul	36.3 mm (1.4 in)	24 July 1977
Aug	38.6 mm (1.5 in)	17 August 1960
Sep	27.9 mm (1.1 in)	20 September 1950
Oct	39.9 mm (1.6 in)	6 October 1962
Nov	49.8 mm (2.0 in)	21 November 1979
Dec	14.7 mm (0.6 in)	1 December 1982

Period of Record Coverage

1963 to 1987

25 years of record at Glenrock 14 SSE, 1963 to 1987. 4 years have data for under 90 percent of days and are left out of rankings: 1963, 1972, 1980, 1987.

Days with data per year at Glenrock 14 SSE
Year	Days with data	Share of year	Complete
1963	201	55%	No
1964	362	99%	Yes
1965	364	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	304	83%	No
1973	333	91%	Yes
1974	362	99%	Yes
1975	355	97%	Yes
1976	335	92%	Yes
1977	355	97%	Yes
1978	361	99%	Yes
1979	364	100%	Yes
1980	272	74%	No
1981	361	99%	Yes
1982	350	96%	Yes
1983	350	96%	Yes
1984	359	98%	Yes
1985	341	93%	Yes
1986	362	99%	Yes
1987	180	49%	No

Latest Records

Latest records at Glenrock 14 SSE
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
26 May 1987	Glenrock 14 SSE, US	daily rain	11.2 mm (0.4 in)	2.8 mm (0.11 in)	1 year	5 of 100 (Routine)
20 May 1987	Glenrock 14 SSE, US	daily rain	13.5 mm (0.5 in)	5.1 mm (0.20 in)	14 years	12 of 100 (Routine)
27 March 1987	Glenrock 14 SSE, US	daily snowfall	30.5 cm (12.0 in)	15.3 cm (6.0 in)	12 years	24 of 100 (Routine)
20 March 1987	Glenrock 14 SSE, US	daily rain	14.2 mm (0.6 in)	5.1 mm (0.20 in)	28 years	20 of 100 (Routine)
20 March 1987	Glenrock 14 SSE, US	daily snowfall	33.0 cm (13.0 in)	12.7 cm (5.0 in)	28 years	25 of 100 (Routine)
26 February 1987	Glenrock 14 SSE, US	daily snow depth (Tie)	20.3 cm (8.0 in)	tie	27 years	2 of 100 (Routine)
15 February 1987	Glenrock 14 SSE, US	daily snowfall	15.2 cm (6.0 in)	6.3 cm (2.5 in)	20 years	15 of 100 (Routine)
15 February 1987	Glenrock 14 SSE, US	daily rain	7.6 mm (0.30 in)	2.3 mm (0.09 in)	7 years	14 of 100 (Routine)
6 November 1986	Glenrock 14 SSE, US	daily snowfall (Tie)	10.2 cm (4.0 in)	tie	17 years	2 of 100 (Routine)
11 October 1986	Glenrock 14 SSE, US	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	36 years	21 of 100 (Routine)
2 October 1986	Glenrock 14 SSE, US	daily rain	15.7 mm (0.6 in)	9.9 mm (0.39 in)	15 years	20 of 100 (Routine)
25 August 1986	Glenrock 14 SSE, US	daily rain	2.0 mm (0.08 in)	0.2 mm (0.01 in)	4 years	4 of 100 (Routine)
28 June 1986	Glenrock 14 SSE, US	daily rain (Tie)	4.6 mm (0.18 in)	tie	12 years	1 of 100 (Routine)
10 June 1986	Glenrock 14 SSE, US	daily rain	69.1 mm (2.7 in)	36.6 mm (1.4 in)	20 years	48 of 100 (Notable)
17 April 1986	Glenrock 14 SSE, US	daily rain	19.1 mm (0.8 in)	8.9 mm (0.35 in)	9 years	19 of 100 (Routine)
3 April 1986	Glenrock 14 SSE, US	daily rain	35.6 mm (1.4 in)	15.5 mm (0.6 in)	17 years	33 of 100 (Routine)
10 March 1986	Glenrock 14 SSE, US	daily rain	7.6 mm (0.30 in)	2.3 mm (0.09 in)	24 years	16 of 100 (Routine)
8 February 1986	Glenrock 14 SSE, US	daily snow depth	38.1 cm (15.0 in)	12.7 cm (5.0 in)	12 years	17 of 100 (Routine)
7 February 1986	Glenrock 14 SSE, US	daily snow depth	45.7 cm (18.0 in)	7.6 cm (3.0 in)	12 years	13 of 100 (Routine)
6 February 1986	Glenrock 14 SSE, US	daily rain	10.2 mm (0.4 in)	7.4 mm (0.29 in)	28 years	20 of 100 (Routine)

Climate Trend

18 complete years, 1964 to 1986

One stripe for each of 18 complete years at Glenrock 14 SSE, 1964 to 1986. Blue stripes are years cooler than the station's own mean of 5.7 C (42.2 F); red stripes are warmer. The coolest year was 1970, at 4.8 C (40.6 F), and the warmest was 1981, at 7.5 C (45.5 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at Glenrock 14 SSE as warming stripes, 1964 to 1986
Year	Annual mean temperature	Difference from the station mean
1964	5.7 C	-0.02 C
1965	5.4 C	-0.24 C
1966	6.5 C	+0.79 C
1967	5.7 C	-0.02 C
1968	5.3 C	-0.36 C
1969	5.9 C	+0.25 C
1970	4.8 C	-0.89 C
1971	4.9 C	-0.81 C
1974	5.3 C	-0.36 C
1975	4.9 C	-0.76 C
1977	6.4 C	+0.71 C
1978	5.4 C	-0.32 C
1979	5.6 C	-0.09 C
1981	7.5 C	+1.83 C
1982	5.3 C	-0.39 C
1983	5.7 C	-0.01 C
1984	5.3 C	-0.38 C
1986	6.8 C	+1.10 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

1949 to 1987

Yearly extremes at Glenrock 14 SSE: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	1981	33.3 C (91.9 F)	25
Coldest night (TNn)	-40.0 C (-40.0 F)	1983	-31.7 C (-25.1 F)	25
Wettest day (Rx1day)	109.2 mm (4.3 in)	1965	29.2 mm (1.1 in)	39
Wettest five days (Rx5day)	117.8 mm (4.6 in)	1965	50.4 mm (2.0 in)	39
Longest dry spell (CDD)	53 days	1956	30 days	39

Hottest day (TXx)

The hottest day of the year at Glenrock 14 SSE, 1949 to 1987. The record is 35.6 C (96.1 F) in 1981, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Glenrock 14 SSE by year
Year	Hottest day (TXx)
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	n/a
1962	n/a
1963	33.3 C (91.9 F)
1964	32.8 C (91.0 F)
1965	32.8 C (91.0 F)
1966	33.9 C (93.0 F)
1967	31.7 C (89.1 F)
1968	32.2 C (90.0 F)
1969	33.3 C (91.9 F)
1970	33.3 C (91.9 F)
1971	31.1 C (88.0 F)
1972	33.9 C (93.0 F)
1973	31.7 C (89.1 F)
1974	31.7 C (89.1 F)
1975	33.3 C (91.9 F)
1976	33.9 C (93.0 F)
1977	33.9 C (93.0 F)
1978	33.9 C (93.0 F)
1979	35.0 C (95.0 F)
1980	33.3 C (91.9 F)
1981	35.6 C (96.1 F)
1982	33.9 C (93.0 F)
1983	33.3 C (91.9 F)
1984	33.3 C (91.9 F)
1985	33.9 C (93.0 F)
1986	33.3 C (91.9 F)
1987	29.4 C (84.9 F)

Coldest night (TNn)

The coldest night of the year at Glenrock 14 SSE, 1949 to 1987. The record is -40.0 C (-40.0 F) in 1983, marked on the chart; the median year is -31.7 C (-25.1 F).

Coldest night (TNn) at Glenrock 14 SSE by year
Year	Coldest night (TNn)
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	n/a
1962	n/a
1963	-26.7 C (-16.1 F)
1964	-37.2 C (-35.0 F)
1965	-33.3 C (-27.9 F)
1966	-26.7 C (-16.1 F)
1967	-28.3 C (-18.9 F)
1968	-29.4 C (-20.9 F)
1969	-25.6 C (-14.1 F)
1970	-27.2 C (-17.0 F)
1971	-28.9 C (-20.0 F)
1972	-36.1 C (-33.0 F)
1973	-34.4 C (-29.9 F)
1974	-32.8 C (-27.0 F)
1975	-30.6 C (-23.1 F)
1976	-32.2 C (-26.0 F)
1977	-29.4 C (-20.9 F)
1978	-34.4 C (-29.9 F)
1979	-32.2 C (-26.0 F)
1980	-34.4 C (-29.9 F)
1981	-30.0 C (-22.0 F)
1982	-33.9 C (-29.0 F)
1983	-40.0 C (-40.0 F)
1984	-31.7 C (-25.1 F)
1985	-33.3 C (-27.9 F)
1986	-31.7 C (-25.1 F)
1987	-29.4 C (-20.9 F)

Wettest day (Rx1day)

The wettest day of the year at Glenrock 14 SSE, 1949 to 1987. The record is 109.2 mm (4.3 in) in 1965, marked on the chart; the median year is 29.2 mm (1.1 in).

Wettest day (Rx1day) at Glenrock 14 SSE by year
Year	Wettest day (Rx1day)
1949	5.1 mm (0.20 in)
1950	27.9 mm (1.1 in)
1951	28.4 mm (1.1 in)
1952	23.1 mm (0.9 in)
1953	19.3 mm (0.8 in)
1954	23.4 mm (0.9 in)
1955	22.6 mm (0.9 in)
1956	20.8 mm (0.8 in)
1957	24.4 mm (1.0 in)
1958	22.4 mm (0.9 in)
1959	25.4 mm (1.0 in)
1960	38.6 mm (1.5 in)
1961	29.0 mm (1.1 in)
1962	56.4 mm (2.2 in)
1963	27.2 mm (1.1 in)
1964	38.9 mm (1.5 in)
1965	109.2 mm (4.3 in)
1966	19.3 mm (0.8 in)
1967	31.2 mm (1.2 in)
1968	34.5 mm (1.4 in)
1969	37.8 mm (1.5 in)
1970	95.3 mm (3.8 in)
1971	51.6 mm (2.0 in)
1972	26.2 mm (1.0 in)
1973	45.7 mm (1.8 in)
1974	37.3 mm (1.5 in)
1975	26.4 mm (1.0 in)
1976	35.6 mm (1.4 in)
1977	36.3 mm (1.4 in)
1978	39.4 mm (1.6 in)
1979	49.8 mm (2.0 in)
1980	29.0 mm (1.1 in)
1981	30.5 mm (1.2 in)
1982	70.9 mm (2.8 in)
1983	40.1 mm (1.6 in)
1984	18.3 mm (0.7 in)
1985	29.2 mm (1.1 in)
1986	69.1 mm (2.7 in)
1987	14.2 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Glenrock 14 SSE, 1949 to 1987. The record is 117.8 mm (4.6 in) in 1965, marked on the chart; the median year is 50.4 mm (2.0 in).

Wettest five days (Rx5day) at Glenrock 14 SSE by year
Year	Wettest five days (Rx5day)
1949	5.1 mm (0.20 in)
1950	54.6 mm (2.1 in)
1951	37.4 mm (1.5 in)
1952	46.5 mm (1.8 in)
1953	36.4 mm (1.4 in)
1954	24.9 mm (1.0 in)
1955	37.1 mm (1.5 in)
1956	49.1 mm (1.9 in)
1957	34.6 mm (1.4 in)
1958	36.9 mm (1.5 in)
1959	46.5 mm (1.8 in)
1960	50.4 mm (2.0 in)
1961	46.7 mm (1.8 in)
1962	98.0 mm (3.9 in)
1963	53.4 mm (2.1 in)
1964	45.8 mm (1.8 in)
1965	117.8 mm (4.6 in)
1966	25.7 mm (1.0 in)
1967	54.7 mm (2.2 in)
1968	71.1 mm (2.8 in)
1969	71.6 mm (2.8 in)
1970	100.4 mm (4.0 in)
1971	86.4 mm (3.4 in)
1972	53.9 mm (2.1 in)
1973	64.5 mm (2.5 in)
1974	45.7 mm (1.8 in)
1975	35.3 mm (1.4 in)
1976	55.4 mm (2.2 in)
1977	57.7 mm (2.3 in)
1978	57.2 mm (2.3 in)
1979	62.5 mm (2.5 in)
1980	63.0 mm (2.5 in)
1981	49.8 mm (2.0 in)
1982	109.7 mm (4.3 in)
1983	77.2 mm (3.0 in)
1984	33.3 mm (1.3 in)
1985	31.7 mm (1.2 in)
1986	84.6 mm (3.3 in)
1987	33.1 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Glenrock 14 SSE, 1949 to 1987. The record is 53 days in 1956, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Glenrock 14 SSE by year
Year	Longest dry spell (CDD)
1949	22 days
1950	30 days
1951	31 days
1952	33 days
1953	30 days
1954	24 days
1955	36 days
1956	53 days
1957	51 days
1958	43 days
1959	24 days
1960	41 days
1961	24 days
1962	35 days
1963	33 days
1964	31 days
1965	50 days
1966	29 days
1967	37 days
1968	19 days
1969	42 days
1970	32 days
1971	24 days
1972	31 days
1973	22 days
1974	26 days
1975	26 days
1976	37 days
1977	26 days
1978	33 days
1979	27 days
1980	30 days
1981	37 days
1982	29 days
1983	24 days
1984	17 days
1985	24 days
1986	23 days
1987	15 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

36 years, 1950 to 1986

A day with at least 31.6 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 130.4 mm (5.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Glenrock 14 SSE: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	31.6 mm (1.2 in)
5 years	46.3 mm (1.8 in)
10 years	59.6 mm (2.3 in)
25 years	81.8 mm (3.2 in)
50 years	103.4 mm (4.1 in)	Longer than the 36 years of record
100 years	130.4 mm (5.1 in)	Longer than the 36 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, 36 years of values from 1950 to 1986.

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: 109.2 mm (4.3 in) in 1965; 95.3 mm (3.8 in) in 1970; 70.9 mm (2.8 in) in 1982.

Download the Data

Data for Glenrock 14 SSE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Glenrock 14 SSE 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 2026-10-16 (16 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).