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Built 2026-10-16 (16 October 2026)

Pendroy 2 NNW Weather Records (USC00246426)

Record envelope, standing records and threshold days for Pendroy 2 NNW (USC00246426), Montana, United States, with 51 years of record.

Key Facts for Pendroy 2 NNW

  • Pendroy 2 NNW (USC00246426) is a weather station in Montana, United States at 48.12 latitude and -112.33 longitude, 1,331 m (4,365 ft) above sea level.
  • The station reports from 1940 to 1990, 51 years of record.
  • 0 records set at Pendroy 2 NNW still stand.
  • Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
  • Pendroy 2 NNW set a daily record precipitation of 7.9 mm (0.31 in) on 30 January 1990.

About the Station

  • Location: Montana, United States, 48.12 latitude, -112.33 longitude.
  • Elevation: 1,331 m (4,365 ft).
  • Period of record: 1940 to 1990, 51 years.
  • Eligible elements: prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Pendroy 2 NNW, with 2026 drawn through them The band shows the record high and record low for each calendar day at Pendroy 2 NNW. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Pendroy 2 NNW. 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 Pendroy 2 NNW, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Pendroy 2 NNW by the year they were set 0 records at Pendroy 2 NNW still stand. 00000000000
0 records at Pendroy 2 NNW still stand.
Standing records at Pendroy 2 NNW by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Pendroy 2 NNW set new all-time records 1 all-time records were set at Pendroy 2 NNW between 17 February 1986 and 17 February 1986. Each dot is a new record. Record daily snowfall17 February 1986: Record daily snowfall 76.2 cm (30.0 in)
1 all-time records were set at Pendroy 2 NNW between 17 February 1986 and 17 February 1986. Each dot is a new record.
When Pendroy 2 NNW set new all-time records
DateKindDetail
1986-02-17Record daily snowfallRecord daily snowfall 76.2 cm (30.0 in)

Wettest Day of Each Month

Jun: 86.9 mm (3.4 in)
Record daily precipitation for each month at Pendroy 2 NNW The wettest day on record for each calendar month at Pendroy 2 NNW. The most was 86.9 mm (3.4 in) on 8 June 1964. 0255075100 Jan: 21.3 mm (0.8 in), 5 January 1968 Jan Feb: 33.0 mm (1.3 in), 17 February 1986 Feb Mar: 36.8 mm (1.4 in), 17 March 1981 Mar Apr: 43.9 mm (1.7 in), 26 April 1976 Apr May: 69.9 mm (2.8 in), 25 May 1953 May Jun: 86.9 mm (3.4 in), 8 June 1964 Jun Jul: 55.9 mm (2.2 in), 13 July 1970 Jul Aug: 68.6 mm (2.7 in), 31 August 1986 Aug Sep: 55.9 mm (2.2 in), 12 September 1978 Sep Oct: 27.7 mm (1.1 in), 2 October 1946 Oct Nov: 17.8 mm (0.7 in), 20 November 1962 Nov Dec: 16.3 mm (0.6 in), 15 December 1979 Dec
The wettest day on record for each calendar month at Pendroy 2 NNW. The most was 86.9 mm (3.4 in) on 8 June 1964.
Record daily precipitation for each month at Pendroy 2 NNW
MonthRecord daily precipitation (mm)Date
Jan21.3 mm (0.8 in)5 January 1968
Feb33.0 mm (1.3 in)17 February 1986
Mar36.8 mm (1.4 in)17 March 1981
Apr43.9 mm (1.7 in)26 April 1976
May69.9 mm (2.8 in)25 May 1953
Jun86.9 mm (3.4 in)8 June 1964
Jul55.9 mm (2.2 in)13 July 1970
Aug68.6 mm (2.7 in)31 August 1986
Sep55.9 mm (2.2 in)12 September 1978
Oct27.7 mm (1.1 in)2 October 1946
Nov17.8 mm (0.7 in)20 November 1962
Dec16.3 mm (0.6 in)15 December 1979

Latest Records

20
Latest records at Pendroy 2 NNW
DateStationRecordValueBeat old record byOld record stoodSignificance
30 January 1990Pendroy 2 NNW, USdaily rain7.9 mm (0.31 in)1.3 mm (0.05 in)16 years12 of 100 (Routine)
27 July 1989Pendroy 2 NNW, USdaily rain10.9 mm (0.4 in)3.8 mm (0.15 in)40 years20 of 100 (Routine)
10 June 1989Pendroy 2 NNW, USdaily rain30.5 mm (1.2 in)18.8 mm (0.7 in)42 years34 of 100 (Routine)
28 May 1989Pendroy 2 NNW, USdaily rain50.5 mm (2.0 in)29.4 mm (1.2 in)7 years37 of 100 (Notable)
22 April 1989Pendroy 2 NNW, USdaily rain6.4 mm (0.25 in)1.1 mm (0.04 in)32 years15 of 100 (Routine)
5 February 1989Pendroy 2 NNW, USdaily rain4.3 mm (0.17 in)1.8 mm (0.07 in)15 years14 of 100 (Routine)
25 December 1988Pendroy 2 NNW, USdaily rain6.9 mm (0.27 in)4.1 mm (0.16 in)38 years20 of 100 (Routine)
14 November 1988Pendroy 2 NNW, USdaily rain13.2 mm (0.5 in)10.7 mm (0.4 in)32 years20 of 100 (Routine)
14 November 1988Pendroy 2 NNW, USdaily snowfall12.7 cm (5.0 in)10.2 cm (4.0 in)33 years35 of 100 (Notable)
27 October 1988Pendroy 2 NNW, USdaily snowfall12.7 cm (5.0 in)5.1 cm (2.0 in)8 years13 of 100 (Routine)
18 September 1988Pendroy 2 NNW, USdaily rain38.9 mm (1.5 in)15.5 mm (0.6 in)2 years22 of 100 (Routine)
11 September 1988Pendroy 2 NNW, USdaily snowfall20.3 cm (8.0 in)15.2 cm (6.0 in)39 years45 of 100 (Notable)
30 May 1988Pendroy 2 NNW, USdaily rain24.6 mm (1.0 in)4.5 mm (0.18 in)10 years11 of 100 (Routine)
25 April 1988Pendroy 2 NNW, USdaily snowfall7.6 cm (3.0 in)5.1 cm (2.0 in)28 years18 of 100 (Routine)
15 March 1988Pendroy 2 NNW, USdaily rain3.0 mm (0.12 in)1.2 mm (0.05 in)46 years19 of 100 (Routine)
14 March 1988Pendroy 2 NNW, USdaily rain5.1 mm (0.20 in)3.1 mm (0.12 in)46 years20 of 100 (Routine)
14 March 1988Pendroy 2 NNW, USdaily snowfall5.1 cm (2.0 in)2.6 cm (1.0 in)33 years17 of 100 (Routine)
9 February 1988Pendroy 2 NNW, USdaily rain4.3 mm (0.17 in)0.5 mm (0.02 in)22 years11 of 100 (Routine)
30 January 1988Pendroy 2 NNW, USdaily snowfall (Tie)5.1 cm (2.0 in)tie26 years3 of 100 (Routine)
11 January 1988Pendroy 2 NNW, USdaily snowfall20.3 cm (8.0 in)17.8 cm (7.0 in)18 years40 of 100 (Notable)

Extremes by Year

1940 to 1990
Yearly extremes at Pendroy 2 NNW: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)86.9 mm (3.4 in)196434.0 mm (1.3 in)51
Wettest five days (Rx5day)151.7 mm (6.0 in)196457.7 mm (2.3 in)51
Longest dry spell (CDD)68 days195437 days51

Wettest day (Rx1day)

Wettest day (Rx1day) at Pendroy 2 NNW by year The wettest day of the year at Pendroy 2 NNW, 1940 to 1990. The record is 86.9 mm (3.4 in) in 1964, marked on the chart; the median year is 34.0 mm (1.3 in). 020406080100194019501960197019801990Record: 86.9 mm (3.4 in) in 1964
The wettest day of the year at Pendroy 2 NNW, 1940 to 1990. The record is 86.9 mm (3.4 in) in 1964, marked on the chart; the median year is 34.0 mm (1.3 in).
Wettest day (Rx1day) at Pendroy 2 NNW by year
YearWettest day (Rx1day)
194040.9 mm (1.6 in)
194129.0 mm (1.1 in)
194235.6 mm (1.4 in)
194363.5 mm (2.5 in)
194438.9 mm (1.5 in)
194525.9 mm (1.0 in)
194627.7 mm (1.1 in)
194742.4 mm (1.7 in)
194864.5 mm (2.5 in)
194922.1 mm (0.9 in)
195035.3 mm (1.4 in)
195133.3 mm (1.3 in)
195225.7 mm (1.0 in)
195369.9 mm (2.8 in)
195433.0 mm (1.3 in)
195522.1 mm (0.9 in)
195633.3 mm (1.3 in)
195734.0 mm (1.3 in)
195832.5 mm (1.3 in)
195933.0 mm (1.3 in)
196029.5 mm (1.2 in)
196124.9 mm (1.0 in)
196218.5 mm (0.7 in)
196325.7 mm (1.0 in)
196486.9 mm (3.4 in)
196528.4 mm (1.1 in)
196621.6 mm (0.9 in)
196719.8 mm (0.8 in)
196847.8 mm (1.9 in)
196941.7 mm (1.6 in)
197055.9 mm (2.2 in)
197147.0 mm (1.9 in)
197245.0 mm (1.8 in)
197324.1 mm (0.9 in)
197426.7 mm (1.1 in)
197550.8 mm (2.0 in)
197643.9 mm (1.7 in)
197727.9 mm (1.1 in)
197855.9 mm (2.2 in)
197919.1 mm (0.8 in)
198049.5 mm (1.9 in)
198140.4 mm (1.6 in)
198234.5 mm (1.4 in)
198333.0 mm (1.3 in)
198427.9 mm (1.1 in)
198536.8 mm (1.4 in)
198668.6 mm (2.7 in)
198740.6 mm (1.6 in)
198838.9 mm (1.5 in)
198950.5 mm (2.0 in)
19907.9 mm (0.31 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Pendroy 2 NNW by year The wettest five days of the year at Pendroy 2 NNW, 1940 to 1990. The record is 151.7 mm (6.0 in) in 1964, marked on the chart; the median year is 57.7 mm (2.3 in). 050100150200194019501960197019801990Record: 151.7 mm (6.0 in) in 1964
The wettest five days of the year at Pendroy 2 NNW, 1940 to 1990. The record is 151.7 mm (6.0 in) in 1964, marked on the chart; the median year is 57.7 mm (2.3 in).
Wettest five days (Rx5day) at Pendroy 2 NNW by year
YearWettest five days (Rx5day)
194058.2 mm (2.3 in)
194155.4 mm (2.2 in)
194269.8 mm (2.7 in)
194386.8 mm (3.4 in)
194461.0 mm (2.4 in)
194571.9 mm (2.8 in)
194643.4 mm (1.7 in)
194756.9 mm (2.2 in)
1948103.1 mm (4.1 in)
194925.7 mm (1.0 in)
195050.0 mm (2.0 in)
195151.4 mm (2.0 in)
195227.0 mm (1.1 in)
1953115.3 mm (4.5 in)
195441.6 mm (1.6 in)
195541.1 mm (1.6 in)
195641.2 mm (1.6 in)
195742.1 mm (1.7 in)
195871.0 mm (2.8 in)
195950.2 mm (2.0 in)
196058.4 mm (2.3 in)
196137.9 mm (1.5 in)
196233.5 mm (1.3 in)
196347.3 mm (1.9 in)
1964151.7 mm (6.0 in)
196559.5 mm (2.3 in)
196646.0 mm (1.8 in)
196741.7 mm (1.6 in)
196883.1 mm (3.3 in)
196979.7 mm (3.1 in)
197081.8 mm (3.2 in)
197165.3 mm (2.6 in)
197248.3 mm (1.9 in)
197324.1 mm (0.9 in)
197448.2 mm (1.9 in)
1975111.8 mm (4.4 in)
197664.0 mm (2.5 in)
197748.5 mm (1.9 in)
197857.7 mm (2.3 in)
197924.9 mm (1.0 in)
198085.0 mm (3.3 in)
198174.7 mm (2.9 in)
198266.1 mm (2.6 in)
198366.3 mm (2.6 in)
198427.9 mm (1.1 in)
198562.7 mm (2.5 in)
198672.7 mm (2.9 in)
198764.7 mm (2.5 in)
198840.4 mm (1.6 in)
198960.5 mm (2.4 in)
199015.5 mm (0.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Pendroy 2 NNW by year The longest dry spell of the year at Pendroy 2 NNW, 1940 to 1990. The record is 68 days in 1954, marked on the chart; the median year is 37 days. 020406080194019501960197019801990Record: 68 days in 1954
The longest dry spell of the year at Pendroy 2 NNW, 1940 to 1990. The record is 68 days in 1954, marked on the chart; the median year is 37 days.
Longest dry spell (CDD) at Pendroy 2 NNW by year
YearLongest dry spell (CDD)
194021 days
194132 days
194235 days
194327 days
194442 days
194540 days
194629 days
194725 days
194837 days
194939 days
195037 days
195122 days
195238 days
195349 days
195468 days
195549 days
195622 days
195741 days
195818 days
195952 days
196047 days
196129 days
196235 days
196336 days
196455 days
196546 days
196623 days
196746 days
196832 days
196952 days
197040 days
197130 days
197225 days
197359 days
197451 days
197519 days
197631 days
197738 days
197834 days
197946 days
198021 days
198167 days
198221 days
198351 days
198444 days
198542 days
198623 days
198739 days
198838 days
198925 days
199020 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

47 years, 1941 to 1988

A day with at least 34.7 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 93.9 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Pendroy 2 NNW: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years34.7 mm (1.4 in)
5 years47.7 mm (1.9 in)
10 years57.3 mm (2.3 in)
25 years70.8 mm (2.8 in)
50 years81.9 mm (3.2 in)Longer than the 47 years of record
100 years93.9 mm (3.7 in)Longer than the 47 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, 47 years of values from 1941 to 1988.

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: 86.9 mm (3.4 in) in 1964; 69.9 mm (2.8 in) in 1953; 68.6 mm (2.7 in) in 1986.

Download the Data

  • Data for Pendroy 2 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Pendroy 2 NNW 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 . Last revised (2025-12-31).