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Built 2026-10-17 (17 October 2026)

Spiro Weather Records (USC00348416)

Record envelope, standing records and threshold days for Spiro (USC00348416), Oklahoma, United States, with 69 years of record.

Key Facts for Spiro

  • Spiro (USC00348416) is a weather station in Oklahoma, United States at 35.24 latitude and -94.63 longitude, 151 m (495 ft) above sea level.
  • The station reports from 1941 to 2009, 69 years of record.
  • 0 records set at Spiro still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Spiro set a daily record precipitation of 28.4 mm (1.1 in) on 28 January 2009.

About the Station

  • Location: Oklahoma, United States, 35.24 latitude, -94.63 longitude.
  • Elevation: 151 m (495 ft).
  • Period of record: 1941 to 2009, 69 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Spiro, with 2026 drawn through them The band shows the record high and record low for each calendar day at Spiro. 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 Spiro. 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 Spiro, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
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Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

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

All-Time Record Progression

3 new records
When Spiro set new all-time records 3 all-time records were set at Spiro between 7 February 1979 and 7 January 1988. Each dot is a new record. Record daily snowfallRecord snow depth7 February 1979: Record daily snowfall 20.3 cm (8.0 in)7 January 1988: Record daily snowfall 22.9 cm (9.0 in)7 January 1988: Record snow depth 30.5 cm (12.0 in)19801985
3 all-time records were set at Spiro between 7 February 1979 and 7 January 1988. Each dot is a new record.
When Spiro set new all-time records
DateKindDetail
1979-02-07Record daily snowfallRecord daily snowfall 20.3 cm (8.0 in)
1988-01-07Record daily snowfallRecord daily snowfall 22.9 cm (9.0 in)
1988-01-07Record snow depthRecord snow depth 30.5 cm (12.0 in)

Wettest Day of Each Month

Jul: 176.0 mm (6.9 in)
Record daily precipitation for each month at Spiro The wettest day on record for each calendar month at Spiro. The most was 176.0 mm (6.9 in) on 22 July 1950. 050100150200 Jan: 93.5 mm (3.7 in), 26 January 1989 Jan Feb: 79.8 mm (3.1 in), 9 February 1966 Feb Mar: 130.3 mm (5.1 in), 19 March 2008 Mar Apr: 135.4 mm (5.3 in), 8 April 2002 Apr May: 133.6 mm (5.3 in), 21 May 2001 May Jun: 89.2 mm (3.5 in), 24 June 1948 Jun Jul: 176.0 mm (6.9 in), 22 July 1950 Jul Aug: 101.6 mm (4.0 in), 8 August 1948 Aug Sep: 119.4 mm (4.7 in), 14 September 1950 Sep Oct: 113.5 mm (4.5 in), 27 October 1951 Oct Nov: 123.7 mm (4.9 in), 7 November 1996 Nov Dec: 138.4 mm (5.4 in), 10 December 1971 Dec
The wettest day on record for each calendar month at Spiro. The most was 176.0 mm (6.9 in) on 22 July 1950.
Record daily precipitation for each month at Spiro
MonthRecord daily precipitation (mm)Date
Jan93.5 mm (3.7 in)26 January 1989
Feb79.8 mm (3.1 in)9 February 1966
Mar130.3 mm (5.1 in)19 March 2008
Apr135.4 mm (5.3 in)8 April 2002
May133.6 mm (5.3 in)21 May 2001
Jun89.2 mm (3.5 in)24 June 1948
Jul176.0 mm (6.9 in)22 July 1950
Aug101.6 mm (4.0 in)8 August 1948
Sep119.4 mm (4.7 in)14 September 1950
Oct113.5 mm (4.5 in)27 October 1951
Nov123.7 mm (4.9 in)7 November 1996
Dec138.4 mm (5.4 in)10 December 1971

Latest Records

20
Latest records at Spiro
DateStationRecordValueBeat old record byOld record stoodSignificance
28 January 2009Spiro, USdaily rain28.4 mm (1.1 in)5.0 mm (0.20 in)4 years10 of 100 (Routine)
27 January 2009Spiro, USdaily rain64.8 mm (2.6 in)38.9 mm (1.5 in)60 years52 of 100 (Notable)
27 December 2008Spiro, USdaily rain38.4 mm (1.5 in)13.8 mm (0.5 in)8 years17 of 100 (Routine)
13 September 2008Spiro, USdaily rain75.7 mm (3.0 in)24.6 mm (1.0 in)10 years22 of 100 (Routine)
2 September 2008Spiro, USdaily rain118.4 mm (4.7 in)30.5 mm (1.2 in)5 years24 of 100 (Routine)
11 August 2008Spiro, USdaily rain46.5 mm (1.8 in)6.4 mm (0.25 in)29 years19 of 100 (Routine)
26 May 2008Spiro, USdaily rain57.7 mm (2.3 in)7.9 mm (0.31 in)47 years24 of 100 (Routine)
10 April 2008Spiro, USdaily rain106.4 mm (4.2 in)68.6 mm (2.7 in)59 years61 of 100 (Major)
1 April 2008Spiro, USdaily rain29.2 mm (1.1 in)7.6 mm (0.30 in)49 years24 of 100 (Routine)
19 March 2008Spiro, USmonthly rain130.3 mm (5.1 in)29.7 mm (1.2 in)44 years49 of 100 (Notable)
3 March 2008Spiro, USdaily rain91.2 mm (3.6 in)61.5 mm (2.4 in)38 years57 of 100 (Notable)
17 February 2008Spiro, USdaily rain57.4 mm (2.3 in)21.6 mm (0.9 in)52 years36 of 100 (Notable)
9 September 2007Spiro, USdaily rain53.1 mm (2.1 in)19.8 mm (0.8 in)22 years23 of 100 (Routine)
13 July 2007Spiro, USdaily rain73.2 mm (2.9 in)15.0 mm (0.6 in)4 years14 of 100 (Routine)
13 February 2007Spiro, USdaily rain50.8 mm (2.0 in)6.3 mm (0.25 in)57 years27 of 100 (Routine)
15 January 2007Spiro, USdaily rain33.0 mm (1.3 in)6.3 mm (0.25 in)52 years25 of 100 (Routine)
13 January 2007Spiro, USdaily rain74.7 mm (2.9 in)34.6 mm (1.4 in)56 years49 of 100 (Notable)
30 December 2006Spiro, USdaily rain44.7 mm (1.8 in)22.9 mm (0.9 in)16 years25 of 100 (Routine)
30 November 2006Spiro, USdaily rain105.4 mm (4.1 in)63.7 mm (2.5 in)24 years46 of 100 (Notable)
5 November 2006Spiro, USdaily rain82.0 mm (3.2 in)12.4 mm (0.5 in)12 years15 of 100 (Routine)

Extremes by Year

1941 to 2009
Yearly extremes at Spiro: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)176.0 mm (6.9 in)195082.0 mm (3.2 in)65
Wettest five days (Rx5day)261.1 mm (10.3 in)1973121.7 mm (4.8 in)65
Longest dry spell (CDD)46 days199925 days65

Wettest day (Rx1day)

Wettest day (Rx1day) at Spiro by year The wettest day of the year at Spiro, 1941 to 2009. The record is 176.0 mm (6.9 in) in 1950, marked on the chart; the median year is 82.0 mm (3.2 in). 050100150200196019802000Record: 176.0 mm (6.9 in) in 1950
The wettest day of the year at Spiro, 1941 to 2009. The record is 176.0 mm (6.9 in) in 1950, marked on the chart; the median year is 82.0 mm (3.2 in).
Wettest day (Rx1day) at Spiro by year
YearWettest day (Rx1day)
194159.7 mm (2.4 in)
194278.7 mm (3.1 in)
194759.7 mm (2.4 in)
1948101.6 mm (4.0 in)
194982.3 mm (3.2 in)
1950176.0 mm (6.9 in)
1951113.5 mm (4.5 in)
195256.1 mm (2.2 in)
195391.9 mm (3.6 in)
195456.4 mm (2.2 in)
195544.2 mm (1.7 in)
195666.3 mm (2.6 in)
195792.2 mm (3.6 in)
195884.6 mm (3.3 in)
195976.2 mm (3.0 in)
1960127.8 mm (5.0 in)
1961100.6 mm (4.0 in)
196265.5 mm (2.6 in)
196334.3 mm (1.4 in)
1964100.6 mm (4.0 in)
1965106.9 mm (4.2 in)
196679.8 mm (3.1 in)
196780.0 mm (3.1 in)
1968125.7 mm (4.9 in)
196968.1 mm (2.7 in)
197064.3 mm (2.5 in)
1971138.4 mm (5.4 in)
197273.7 mm (2.9 in)
1973118.6 mm (4.7 in)
197482.0 mm (3.2 in)
197569.1 mm (2.7 in)
197678.2 mm (3.1 in)
197774.7 mm (2.9 in)
197866.0 mm (2.6 in)
197983.8 mm (3.3 in)
198051.1 mm (2.0 in)
198167.8 mm (2.7 in)
198267.6 mm (2.7 in)
198354.4 mm (2.1 in)
198498.8 mm (3.9 in)
1985102.9 mm (4.1 in)
198684.1 mm (3.3 in)
198760.5 mm (2.4 in)
198869.9 mm (2.8 in)
198993.5 mm (3.7 in)
1990119.6 mm (4.7 in)
199182.8 mm (3.3 in)
199290.9 mm (3.6 in)
199375.4 mm (3.0 in)
199483.1 mm (3.3 in)
199555.6 mm (2.2 in)
1996123.7 mm (4.9 in)
199775.2 mm (3.0 in)
1998108.2 mm (4.3 in)
199982.0 mm (3.2 in)
200050.8 mm (2.0 in)
2001133.6 mm (5.3 in)
2002135.4 mm (5.3 in)
200387.9 mm (3.5 in)
2004135.1 mm (5.3 in)
200542.9 mm (1.7 in)
2006105.4 mm (4.1 in)
200774.7 mm (2.9 in)
2008130.3 mm (5.1 in)
200964.8 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Spiro by year The wettest five days of the year at Spiro, 1941 to 2009. The record is 261.1 mm (10.3 in) in 1973, marked on the chart; the median year is 121.7 mm (4.8 in). 0100200300196019802000Record: 261.1 mm (10.3 in) in 1973
The wettest five days of the year at Spiro, 1941 to 2009. The record is 261.1 mm (10.3 in) in 1973, marked on the chart; the median year is 121.7 mm (4.8 in).
Wettest five days (Rx5day) at Spiro by year
YearWettest five days (Rx5day)
194181.3 mm (3.2 in)
1942121.1 mm (4.8 in)
194759.7 mm (2.4 in)
1948121.7 mm (4.8 in)
1949181.3 mm (7.1 in)
1950192.5 mm (7.6 in)
1951215.1 mm (8.5 in)
195294.7 mm (3.7 in)
1953139.4 mm (5.5 in)
1954103.8 mm (4.1 in)
195591.0 mm (3.6 in)
195696.3 mm (3.8 in)
1957112.6 mm (4.4 in)
1958164.3 mm (6.5 in)
1959138.4 mm (5.4 in)
1960204.5 mm (8.1 in)
1961180.4 mm (7.1 in)
1962119.3 mm (4.7 in)
196365.5 mm (2.6 in)
1964114.6 mm (4.5 in)
1965125.2 mm (4.9 in)
1966132.8 mm (5.2 in)
1967143.8 mm (5.7 in)
1968194.2 mm (7.6 in)
196996.8 mm (3.8 in)
1970105.2 mm (4.1 in)
1971197.9 mm (7.8 in)
1972154.5 mm (6.1 in)
1973261.1 mm (10.3 in)
1974122.4 mm (4.8 in)
1975121.7 mm (4.8 in)
1976120.1 mm (4.7 in)
1977121.4 mm (4.8 in)
1978143.4 mm (5.6 in)
1979135.1 mm (5.3 in)
198070.4 mm (2.8 in)
1981117.8 mm (4.6 in)
1982117.9 mm (4.6 in)
198399.9 mm (3.9 in)
1984121.1 mm (4.8 in)
1985206.3 mm (8.1 in)
1986104.4 mm (4.1 in)
1987142.3 mm (5.6 in)
198891.2 mm (3.6 in)
1989130.5 mm (5.1 in)
1990203.7 mm (8.0 in)
1991203.2 mm (8.0 in)
1992108.7 mm (4.3 in)
1993133.1 mm (5.2 in)
1994161.8 mm (6.4 in)
199599.4 mm (3.9 in)
1996123.7 mm (4.9 in)
1997105.9 mm (4.2 in)
1998172.5 mm (6.8 in)
1999112.0 mm (4.4 in)
200081.8 mm (3.2 in)
2001151.1 mm (5.9 in)
2002145.6 mm (5.7 in)
2003115.3 mm (4.5 in)
2004217.7 mm (8.6 in)
200551.1 mm (2.0 in)
2006119.9 mm (4.7 in)
2007132.9 mm (5.2 in)
2008140.7 mm (5.5 in)
200993.2 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Spiro by year The longest dry spell of the year at Spiro, 1941 to 2009. The record is 46 days in 1999, marked on the chart; the median year is 25 days. 1020304050196019802000Record: 46 days in 1999
The longest dry spell of the year at Spiro, 1941 to 2009. The record is 46 days in 1999, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Spiro by year
YearLongest dry spell (CDD)
194118 days
194226 days
194726 days
194825 days
194927 days
195026 days
195124 days
195239 days
195319 days
195430 days
195530 days
195626 days
195725 days
195824 days
195930 days
196020 days
196122 days
196226 days
196334 days
196431 days
196526 days
196619 days
196725 days
196819 days
196926 days
197026 days
197112 days
197226 days
197321 days
197417 days
197523 days
197621 days
197726 days
197824 days
197924 days
198031 days
198120 days
198218 days
198322 days
198424 days
198523 days
198623 days
198728 days
198833 days
198922 days
199013 days
199119 days
199215 days
199317 days
199424 days
199516 days
199625 days
199715 days
199829 days
199946 days
200037 days
200126 days
200222 days
200325 days
200425 days
200527 days
200632 days
200733 days
200829 days
200914 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

59 years, 1948 to 2007

A day with at least 82.6 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 171.1 mm (6.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Spiro: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years82.6 mm (3.3 in)
5 years108.0 mm (4.3 in)
10 years124.2 mm (4.9 in)
25 years143.7 mm (5.7 in)
50 years157.7 mm (6.2 in)
100 years171.1 mm (6.7 in)Longer than the 59 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, 59 years of values from 1948 to 2007.

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: 176.0 mm (6.9 in) in 1950; 138.4 mm (5.4 in) in 1971; 135.4 mm (5.3 in) in 2002.

Download the Data

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