Richey Weather Records (USC00247020)

Record envelope, standing records and threshold days for Richey (USC00247020), Montana, United States, with 32 years of record.

Key Facts for Richey

Richey (USC00247020) is a weather station in Montana, United States at 47.63 latitude and -105.07 longitude, 763 m (2,503 ft) above sea level.
The station reports from 1948 to 1979, 32 years of record.
1,464 records set at Richey still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Montana, United States, 47.63 latitude, -105.07 longitude.
Elevation: 763 m (2,503 ft).
Period of record: 1948 to 1979, 32 years.
Eligible elements: none yet.

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 Richey. 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 Richey, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.3 C (55.9 F)	-41.1 C (-42.0 F)	n/a	n/a
Feb	17.2 C (63.0 F)	-41.7 C (-43.1 F)	n/a	n/a
Mar	24.4 C (75.9 F)	-36.1 C (-33.0 F)	n/a	n/a
Apr	32.2 C (90.0 F)	-23.3 C (-9.9 F)	n/a	n/a
May	36.1 C (97.0 F)	-12.2 C (10.0 F)	n/a	n/a
Jun	38.3 C (100.9 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	41.1 C (106.0 F)	0.0 C (32.0 F)	n/a	n/a
Aug	41.7 C (107.1 F)	-3.3 C (26.1 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-11.1 C (12.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-16.7 C (1.9 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-33.3 C (-27.9 F)	n/a	n/a
Dec	15.0 C (59.0 F)	-40.0 C (-40.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Richey still stand. 1950 holds the most, with 87.

Standing records at Richey by the year they were set
Year set	Standing records
1948	27
1949	86
1950	87
1951	69
1952	45
1953	75
1954	81
1955	51
1956	56
1957	47
1958	62
1959	60
1960	44
1961	62
1962	63
1963	64
1964	76
1965	78
1966	55
1967	56
1968	67
1969	61
1970	28
1971	27
1978	23
1979	14

Wettest Day of Each Month

Aug: 63.2 mm (2.5 in)

The wettest day on record for each calendar month at Richey. The most was 63.2 mm (2.5 in) on 23 August 1968.

Record daily precipitation for each month at Richey
Month	Record daily precipitation (mm)	Date
Jan	7.9 mm (0.31 in)	26 January 1951
Feb	8.9 mm (0.35 in)	22 February 1961
Mar	10.2 mm (0.4 in)	25 March 1963
Apr	36.8 mm (1.4 in)	26 April 1969
May	53.3 mm (2.1 in)	11 May 1978
Jun	56.4 mm (2.2 in)	20 June 1960
Jul	57.9 mm (2.3 in)	14 July 1948
Aug	63.2 mm (2.5 in)	23 August 1968
Sep	40.6 mm (1.6 in)	12 September 1978
Oct	38.9 mm (1.5 in)	2 October 1971
Nov	15.2 mm (0.6 in)	4 November 1958
Dec	9.1 mm (0.36 in)	12 December 1951

Period of Record Coverage

1948 to 1979

26 years of record at Richey, 1948 to 1979. 5 years have data for under 90 percent of days and are left out of rankings: 1948, 1970, 1971, 1978, 1979.

Days with data per year at Richey
Year	Days with data	Share of year	Complete
1948	182	50%	No
1949	364	100%	Yes
1950	365	100%	Yes
1951	334	92%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	364	100%	Yes
1955	365	100%	Yes
1956	365	100%	Yes
1957	364	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	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	265	73%	No
1971	236	65%	No
1978	197	54%	No
1979	184	50%	No

Latest Records

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

Climate Trend

20 complete years, 1949 to 1969

One stripe for each of 20 complete years at Richey, 1949 to 1969. Blue stripes are years cooler than the station's own mean of 5.5 C (42.0 F); red stripes are warmer. The coolest year was 1950, at 3.0 C (37.4 F), and the warmest was 1953, at 7.3 C (45.2 F). The strongest colour marks a difference of 2.6 C (4.7 F).

Annual mean temperature at Richey as warming stripes, 1949 to 1969
Year	Annual mean temperature	Difference from the station mean
1949	5.2 C	-0.35 C
1950	3.0 C	-2.51 C
1952	6.0 C	+0.49 C
1953	7.3 C	+1.78 C
1954	6.4 C	+0.85 C
1955	5.1 C	-0.42 C
1956	6.2 C	+0.67 C
1957	5.9 C	+0.36 C
1958	6.5 C	+0.98 C
1959	5.4 C	-0.14 C
1960	5.3 C	-0.23 C
1961	6.2 C	+0.66 C
1962	5.4 C	-0.13 C
1963	6.4 C	+0.85 C
1964	5.1 C	-0.43 C
1965	3.6 C	-1.89 C
1966	5.0 C	-0.57 C
1967	5.8 C	+0.23 C
1968	5.7 C	+0.15 C
1969	5.2 C	-0.37 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 1979

Yearly extremes at Richey: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.7 C (107.1 F)	1949	38.9 C (102.0 F)	26
Coldest night (TNn)	-41.7 C (-43.1 F)	1962	-35.8 C (-32.5 F)	26
Wettest day (Rx1day)	63.2 mm (2.5 in)	1968	35.4 mm (1.4 in)	26
Wettest five days (Rx5day)	92.8 mm (3.7 in)	1963	59.3 mm (2.3 in)	26
Longest dry spell (CDD)	95 days	1965	39 days	26

Hottest day (TXx)

The hottest day of the year at Richey, 1948 to 1979. The record is 41.7 C (107.1 F) in 1949, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Richey by year
Year	Hottest day (TXx)
1948	40.0 C (104.0 F)
1949	41.7 C (107.1 F)
1950	38.3 C (100.9 F)
1951	38.9 C (102.0 F)
1952	39.4 C (102.9 F)
1953	35.0 C (95.0 F)
1954	38.3 C (100.9 F)
1955	38.9 C (102.0 F)
1956	37.8 C (100.0 F)
1957	38.3 C (100.9 F)
1958	41.1 C (106.0 F)
1959	38.9 C (102.0 F)
1960	41.1 C (106.0 F)
1961	38.3 C (100.9 F)
1962	35.6 C (96.1 F)
1963	39.4 C (102.9 F)
1964	40.0 C (104.0 F)
1965	38.3 C (100.9 F)
1966	40.6 C (105.1 F)
1967	37.2 C (99.0 F)
1968	38.3 C (100.9 F)
1969	39.4 C (102.9 F)
1970	36.7 C (98.1 F)
1971	39.4 C (102.9 F)
1978	39.4 C (102.9 F)
1979	38.3 C (100.9 F)

Coldest night (TNn)

The coldest night of the year at Richey, 1948 to 1979. The record is -41.7 C (-43.1 F) in 1962, marked on the chart; the median year is -35.8 C (-32.5 F).

Coldest night (TNn) at Richey by year
Year	Coldest night (TNn)
1948	-33.3 C (-27.9 F)
1949	-35.0 C (-31.0 F)
1950	-41.1 C (-42.0 F)
1951	-37.8 C (-36.0 F)
1952	-34.4 C (-29.9 F)
1953	-31.7 C (-25.1 F)
1954	-41.1 C (-42.0 F)
1955	-36.1 C (-33.0 F)
1956	-33.3 C (-27.9 F)
1957	-36.7 C (-34.1 F)
1958	-32.8 C (-27.0 F)
1959	-33.9 C (-29.0 F)
1960	-34.4 C (-29.9 F)
1961	-31.7 C (-25.1 F)
1962	-41.7 C (-43.1 F)
1963	-36.1 C (-33.0 F)
1964	-35.6 C (-32.1 F)
1965	-36.1 C (-33.0 F)
1966	-36.1 C (-33.0 F)
1967	-38.3 C (-36.9 F)
1968	-40.0 C (-40.0 F)
1969	-40.6 C (-41.1 F)
1970	-38.9 C (-38.0 F)
1971	-17.2 C (1.0 F)
1978	-32.2 C (-26.0 F)
1979	-34.4 C (-29.9 F)

Wettest day (Rx1day)

The wettest day of the year at Richey, 1948 to 1979. The record is 63.2 mm (2.5 in) in 1968, marked on the chart; the median year is 35.4 mm (1.4 in).

Wettest day (Rx1day) at Richey by year
Year	Wettest day (Rx1day)
1948	57.9 mm (2.3 in)
1949	23.1 mm (0.9 in)
1950	24.9 mm (1.0 in)
1951	27.9 mm (1.1 in)
1952	15.0 mm (0.6 in)
1953	30.7 mm (1.2 in)
1954	30.5 mm (1.2 in)
1955	29.5 mm (1.2 in)
1956	30.7 mm (1.2 in)
1957	49.3 mm (1.9 in)
1958	19.1 mm (0.8 in)
1959	30.5 mm (1.2 in)
1960	56.4 mm (2.2 in)
1961	44.5 mm (1.8 in)
1962	47.0 mm (1.9 in)
1963	38.4 mm (1.5 in)
1964	40.1 mm (1.6 in)
1965	34.0 mm (1.3 in)
1966	40.1 mm (1.6 in)
1967	26.9 mm (1.1 in)
1968	63.2 mm (2.5 in)
1969	36.8 mm (1.4 in)
1970	44.5 mm (1.8 in)
1971	38.9 mm (1.5 in)
1978	53.3 mm (2.1 in)
1979	12.4 mm (0.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Richey, 1948 to 1979. The record is 92.8 mm (3.7 in) in 1963, marked on the chart; the median year is 59.3 mm (2.3 in).

Wettest five days (Rx5day) at Richey by year
Year	Wettest five days (Rx5day)
1948	92.2 mm (3.6 in)
1949	35.0 mm (1.4 in)
1950	59.7 mm (2.4 in)
1951	58.9 mm (2.3 in)
1952	23.6 mm (0.9 in)
1953	61.9 mm (2.4 in)
1954	39.9 mm (1.6 in)
1955	35.6 mm (1.4 in)
1956	43.4 mm (1.7 in)
1957	55.6 mm (2.2 in)
1958	29.0 mm (1.1 in)
1959	52.9 mm (2.1 in)
1960	83.4 mm (3.3 in)
1961	66.6 mm (2.6 in)
1962	63.8 mm (2.5 in)
1963	92.8 mm (3.7 in)
1964	56.3 mm (2.2 in)
1965	83.8 mm (3.3 in)
1966	59.4 mm (2.3 in)
1967	73.9 mm (2.9 in)
1968	79.9 mm (3.1 in)
1969	67.6 mm (2.7 in)
1970	58.5 mm (2.3 in)
1971	59.2 mm (2.3 in)
1978	92.7 mm (3.6 in)
1979	22.6 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Richey, 1948 to 1979. The record is 95 days in 1965, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Richey by year
Year	Longest dry spell (CDD)
1948	46 days
1949	46 days
1950	29 days
1951	49 days
1952	37 days
1953	26 days
1954	32 days
1955	27 days
1956	28 days
1957	41 days
1958	35 days
1959	31 days
1960	43 days
1961	70 days
1962	45 days
1963	83 days
1964	35 days
1965	95 days
1966	43 days
1967	37 days
1968	42 days
1969	41 days
1970	41 days
1971	36 days
1978	37 days
1979	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.

Frost Dates and Growing Season

20 years with a frost

Across 20 years with a frost, the median last spring frost at Richey falls on 27 May and the median first autumn frost on 9 September, which leaves a median of 108 days between them.

Frost dates and growing season at Richey
Measure	Median, all years	Earliest period	Recent period (1949 to 1969)	Recent against earliest	Fitted trend
Last spring frost	27 May	n/a	27 May	n/a	n/a
First autumn frost	9 September	n/a	9 September	n/a	n/a
Growing days	108 days	n/a	108 days	n/a	n/a

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.

Download the Data

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