Morrisey Weather Records (USC00486450)

Record envelope, standing records and threshold days for Morrisey (USC00486450), Wyoming, United States, with 31 years of record.

Key Facts for Morrisey

Morrisey (USC00486450) is a weather station in Wyoming, United States at 43.52 latitude and -104.33 longitude, 1,251 m (4,104 ft) above sea level.
The station reports from 1948 to 1978, 31 years of record.
1,464 records set at Morrisey still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.

About the Station

Location: Wyoming, United States, 43.52 latitude, -104.33 longitude.
Elevation: 1,251 m (4,104 ft).
Period of record: 1948 to 1978, 31 years.
Eligible elements: tmax, tmin, prcp, snow.

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 Morrisey. 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 Morrisey, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	20.0 C (68.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Feb	22.8 C (73.0 F)	-28.9 C (-20.0 F)	n/a	n/a
Mar	27.2 C (81.0 F)	-28.3 C (-18.9 F)	n/a	n/a
Apr	31.7 C (89.1 F)	-18.9 C (-2.0 F)	n/a	n/a
May	35.6 C (96.1 F)	-11.1 C (12.0 F)	n/a	n/a
Jun	41.1 C (106.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	3.9 C (39.0 F)	n/a	n/a
Aug	40.6 C (105.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	38.3 C (100.9 F)	-8.3 C (17.1 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-12.8 C (9.0 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-27.8 C (-18.0 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-33.9 C (-29.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Morrisey still stand. 1954 holds the most, with 83.

Standing records at Morrisey by the year they were set
Year set	Standing records
1948	33
1949	53
1950	73
1951	75
1952	51
1953	65
1954	83
1955	57
1956	50
1957	50
1958	60
1959	49
1960	40
1961	38
1962	54
1963	38
1964	36
1965	49
1966	65
1967	32
1968	45
1969	41
1970	29
1971	31
1972	61
1973	35
1974	32
1975	51
1976	30
1977	26
1978	32

Wettest Day of Each Month

Jul: 68.6 mm (2.7 in)

The wettest day on record for each calendar month at Morrisey. The most was 68.6 mm (2.7 in) on 30 July 1958.

Record daily precipitation for each month at Morrisey
Month	Record daily precipitation (mm)	Date
Jan	14.0 mm (0.6 in)	21 January 1974
Feb	37.6 mm (1.5 in)	9 February 1953
Mar	20.3 mm (0.8 in)	2 March 1978
Apr	32.5 mm (1.3 in)	18 April 1971
May	60.5 mm (2.4 in)	21 May 1952
Jun	38.9 mm (1.5 in)	14 June 1976
Jul	68.6 mm (2.7 in)	30 July 1958
Aug	42.2 mm (1.7 in)	10 August 1974
Sep	25.4 mm (1.0 in)	1 September 1963
Oct	26.4 mm (1.0 in)	28 October 1971
Nov	54.6 mm (2.1 in)	19 November 1977
Dec	13.2 mm (0.5 in)	18 December 1973

Period of Record Coverage

1948 to 1978

31 years of record at Morrisey, 1948 to 1978. 8 years have data for under 90 percent of days and are left out of rankings: 1948, 1963, 1964, 1965, 1967, 1969, 1974, 1978.

Days with data per year at Morrisey
Year	Days with data	Share of year	Complete
1948	142	39%	No
1949	343	94%	Yes
1950	341	93%	Yes
1951	354	97%	Yes
1952	354	97%	Yes
1953	350	96%	Yes
1954	342	94%	Yes
1955	354	97%	Yes
1956	360	98%	Yes
1957	361	99%	Yes
1958	356	98%	Yes
1959	358	98%	Yes
1960	333	91%	Yes
1961	358	98%	Yes
1962	359	98%	Yes
1963	317	87%	No
1964	296	81%	No
1965	295	81%	No
1966	338	93%	Yes
1967	276	76%	No
1968	346	95%	Yes
1969	323	88%	No
1970	351	96%	Yes
1971	342	94%	Yes
1972	352	96%	Yes
1973	352	96%	Yes
1974	328	90%	No
1975	347	95%	Yes
1976	349	95%	Yes
1977	350	96%	Yes
1978	232	64%	No

Latest Records

No records were set at this station in the latest data.

Climate Trend

15 complete years, 1949 to 1975

One stripe for each of 15 complete years at Morrisey, 1949 to 1975. Blue stripes are years cooler than the station's own mean of 8.8 C (47.9 F); red stripes are warmer. The coolest year was 1951, at 7.4 C (45.4 F), and the warmest was 1954, at 10.3 C (50.5 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Morrisey as warming stripes, 1949 to 1975
Year	Annual mean temperature	Difference from the station mean
1949	8.7 C	-0.11 C
1950	8.0 C	-0.85 C
1951	7.4 C	-1.40 C
1952	9.9 C	+1.05 C
1953	10.2 C	+1.35 C
1954	10.3 C	+1.42 C
1955	8.3 C	-0.50 C
1956	9.7 C	+0.86 C
1957	8.4 C	-0.48 C
1958	9.1 C	+0.25 C
1959	8.3 C	-0.57 C
1961	9.0 C	+0.17 C
1962	8.7 C	-0.09 C
1966	8.5 C	-0.29 C
1975	8.0 C	-0.79 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

1948 to 1978

Yearly extremes at Morrisey: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	1954	39.4 C (102.9 F)	31
Coldest night (TNn)	-33.9 C (-29.0 F)	1964	-28.3 C (-18.9 F)	31
Wettest day (Rx1day)	68.6 mm (2.7 in)	1958	33.3 mm (1.3 in)	31
Wettest five days (Rx5day)	86.9 mm (3.4 in)	1973	45.5 mm (1.8 in)	31
Longest dry spell (CDD)	94 days	1958	39 days	31

Hottest day (TXx)

The hottest day of the year at Morrisey, 1948 to 1978. The record is 43.3 C (109.9 F) in 1954, marked on the chart; the median year is 39.4 C (102.9 F).

Hottest day (TXx) at Morrisey by year
Year	Hottest day (TXx)
1948	40.0 C (104.0 F)
1949	40.0 C (104.0 F)
1950	37.2 C (99.0 F)
1951	39.4 C (102.9 F)
1952	40.6 C (105.1 F)
1953	40.0 C (104.0 F)
1954	43.3 C (109.9 F)
1955	40.6 C (105.1 F)
1956	39.4 C (102.9 F)
1957	38.3 C (100.9 F)
1958	37.2 C (99.0 F)
1959	38.9 C (102.0 F)
1960	40.6 C (105.1 F)
1961	39.4 C (102.9 F)
1962	37.8 C (100.0 F)
1963	39.4 C (102.9 F)
1964	39.4 C (102.9 F)
1965	38.9 C (102.0 F)
1966	38.9 C (102.0 F)
1967	38.3 C (100.9 F)
1968	39.4 C (102.9 F)
1969	38.9 C (102.0 F)
1970	38.9 C (102.0 F)
1971	37.8 C (100.0 F)
1972	38.3 C (100.9 F)
1973	41.7 C (107.1 F)
1974	39.4 C (102.9 F)
1975	40.0 C (104.0 F)
1976	38.9 C (102.0 F)
1977	37.8 C (100.0 F)
1978	36.7 C (98.1 F)

Coldest night (TNn)

The coldest night of the year at Morrisey, 1948 to 1978. The record is -33.9 C (-29.0 F) in 1964, marked on the chart; the median year is -28.3 C (-18.9 F).

Coldest night (TNn) at Morrisey by year
Year	Coldest night (TNn)
1948	-16.7 C (1.9 F)
1949	-30.6 C (-23.1 F)
1950	-30.0 C (-22.0 F)
1951	-31.7 C (-25.1 F)
1952	-28.9 C (-20.0 F)
1953	-22.2 C (-8.0 F)
1954	-27.2 C (-17.0 F)
1955	-26.7 C (-16.1 F)
1956	-24.4 C (-11.9 F)
1957	-28.9 C (-20.0 F)
1958	-23.3 C (-9.9 F)
1959	-29.4 C (-20.9 F)
1960	-28.3 C (-18.9 F)
1961	-22.8 C (-9.0 F)
1962	-28.9 C (-20.0 F)
1963	-32.8 C (-27.0 F)
1964	-33.9 C (-29.0 F)
1965	-23.9 C (-11.0 F)
1966	-27.2 C (-17.0 F)
1967	-21.1 C (-6.0 F)
1968	-31.7 C (-25.1 F)
1969	-24.4 C (-11.9 F)
1970	-27.2 C (-17.0 F)
1971	-28.9 C (-20.0 F)
1972	-30.6 C (-23.1 F)
1973	-28.9 C (-20.0 F)
1974	-30.0 C (-22.0 F)
1975	-27.8 C (-18.0 F)
1976	-27.8 C (-18.0 F)
1977	-28.9 C (-20.0 F)
1978	-23.9 C (-11.0 F)

Wettest day (Rx1day)

The wettest day of the year at Morrisey, 1948 to 1978. The record is 68.6 mm (2.7 in) in 1958, marked on the chart; the median year is 33.3 mm (1.3 in).

Wettest day (Rx1day) at Morrisey by year
Year	Wettest day (Rx1day)
1948	18.8 mm (0.7 in)
1949	34.3 mm (1.4 in)
1950	20.8 mm (0.8 in)
1951	33.0 mm (1.3 in)
1952	60.5 mm (2.4 in)
1953	39.9 mm (1.6 in)
1954	23.6 mm (0.9 in)
1955	40.9 mm (1.6 in)
1956	36.1 mm (1.4 in)
1957	26.2 mm (1.0 in)
1958	68.6 mm (2.7 in)
1959	34.3 mm (1.4 in)
1960	23.6 mm (0.9 in)
1961	25.7 mm (1.0 in)
1962	41.9 mm (1.6 in)
1963	26.7 mm (1.1 in)
1964	24.4 mm (1.0 in)
1965	31.2 mm (1.2 in)
1966	24.6 mm (1.0 in)
1967	35.1 mm (1.4 in)
1968	17.5 mm (0.7 in)
1969	32.3 mm (1.3 in)
1970	21.1 mm (0.8 in)
1971	33.3 mm (1.3 in)
1972	27.7 mm (1.1 in)
1973	43.2 mm (1.7 in)
1974	42.2 mm (1.7 in)
1975	36.6 mm (1.4 in)
1976	38.9 mm (1.5 in)
1977	54.6 mm (2.1 in)
1978	55.4 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Morrisey, 1948 to 1978. The record is 86.9 mm (3.4 in) in 1973, marked on the chart; the median year is 45.5 mm (1.8 in).

Wettest five days (Rx5day) at Morrisey by year
Year	Wettest five days (Rx5day)
1948	30.8 mm (1.2 in)
1949	41.7 mm (1.6 in)
1950	25.7 mm (1.0 in)
1951	41.6 mm (1.6 in)
1952	75.8 mm (3.0 in)
1953	49.0 mm (1.9 in)
1954	26.1 mm (1.0 in)
1955	54.6 mm (2.1 in)
1956	38.9 mm (1.5 in)
1957	45.5 mm (1.8 in)
1958	69.9 mm (2.8 in)
1959	47.6 mm (1.9 in)
1960	35.3 mm (1.4 in)
1961	41.7 mm (1.6 in)
1962	74.6 mm (2.9 in)
1963	49.6 mm (2.0 in)
1964	39.7 mm (1.6 in)
1965	50.5 mm (2.0 in)
1966	38.6 mm (1.5 in)
1967	53.6 mm (2.1 in)
1968	28.2 mm (1.1 in)
1969	51.9 mm (2.0 in)
1970	29.7 mm (1.2 in)
1971	59.5 mm (2.3 in)
1972	41.4 mm (1.6 in)
1973	86.9 mm (3.4 in)
1974	45.2 mm (1.8 in)
1975	44.4 mm (1.7 in)
1976	47.4 mm (1.9 in)
1977	82.5 mm (3.2 in)
1978	75.2 mm (3.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Morrisey, 1948 to 1978. The record is 94 days in 1958, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Morrisey by year
Year	Longest dry spell (CDD)
1948	38 days
1949	39 days
1950	50 days
1951	60 days
1952	43 days
1953	31 days
1954	41 days
1955	28 days
1956	44 days
1957	38 days
1958	94 days
1959	60 days
1960	36 days
1961	34 days
1962	39 days
1963	58 days
1964	58 days
1965	37 days
1966	38 days
1967	28 days
1968	45 days
1969	41 days
1970	47 days
1971	27 days
1972	26 days
1973	33 days
1974	70 days
1975	52 days
1976	26 days
1977	42 days
1978	21 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.

Download the Data

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