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Built 2026-10-15 (15 October 2026)

Lewiston Weather Records (USC00105230)

Record envelope, standing records and threshold days for Lewiston (USC00105230), Idaho, United States, with 63 years of record.

Key Facts for Lewiston

  • Lewiston (USC00105230) is a weather station in Idaho, United States at 46.42 latitude and -117.03 longitude, 216 m (708 ft) above sea level.
  • The station reports from 1895 to 1957, 63 years of record.
  • 1,456 records set at Lewiston still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Idaho, United States, 46.42 latitude, -117.03 longitude.
  • Elevation: 216 m (708 ft).
  • Period of record: 1895 to 1957, 63 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Lewiston, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lewiston. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lewiston. 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 Lewiston, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.2 C (54.0 F)-26.7 C (-16.1 F)n/an/a
Feb19.4 C (66.9 F)-20.0 C (-4.0 F)n/an/a
Mar22.2 C (72.0 F)-6.7 C (19.9 F)n/an/a
Apr29.4 C (84.9 F)-1.7 C (28.9 F)n/an/a
May33.3 C (91.9 F)2.8 C (37.0 F)n/an/a
Jun35.6 C (96.1 F)5.6 C (42.1 F)n/an/a
Jul41.7 C (107.1 F)9.4 C (48.9 F)n/an/a
Aug42.2 C (108.0 F)8.3 C (46.9 F)n/an/a
Sep33.3 C (91.9 F)4.4 C (39.9 F)n/an/a
Oct26.7 C (80.1 F)-0.6 C (30.9 F)n/an/a
Nov15.0 C (59.0 F)-6.7 C (19.9 F)n/an/a
Dec16.1 C (61.0 F)-10.6 C (12.9 F)n/an/a

Which Years Hold Standing Records

1,456 standing records
Standing records at Lewiston by the year they were set 1,456 records at Lewiston still stand. 1956 holds the most, with 1,340. 05001,0001,5001956: 1,3401957: 11619561957
1,456 records at Lewiston still stand. 1956 holds the most, with 1,340.
Standing records at Lewiston by the year they were set
Year setStanding records
19561,340
1957116

Wettest Day of Each Month

Mar: 55.4 mm (2.2 in)
Record daily precipitation for each month at Lewiston The wettest day on record for each calendar month at Lewiston. The most was 55.4 mm (2.2 in) on 31 March 1931. 0204060 Jan: 26.7 mm (1.1 in), 15 January 1956 Jan Feb: 21.1 mm (0.8 in), 22 February 1956 Feb Mar: 55.4 mm (2.2 in), 31 March 1931 Mar Apr: 15.5 mm (0.6 in), 14 April 1917 Apr May: 38.1 mm (1.5 in), 26 May 1895 May Jun: 34.8 mm (1.4 in), 15 June 1956 Jun Jul: 45.0 mm (1.8 in), 27 July 1909 Jul Aug: 32.5 mm (1.3 in), 24 August 1907 Aug Sep: 36.1 mm (1.4 in), 23 September 1917 Sep Oct: 22.6 mm (0.9 in), 26 October 1926 Oct Nov: 27.9 mm (1.1 in), 13 November 1906 Nov Dec: 25.7 mm (1.0 in), 28 December 1923 Dec
The wettest day on record for each calendar month at Lewiston. The most was 55.4 mm (2.2 in) on 31 March 1931.
Record daily precipitation for each month at Lewiston
MonthRecord daily precipitation (mm)Date
Jan26.7 mm (1.1 in)15 January 1956
Feb21.1 mm (0.8 in)22 February 1956
Mar55.4 mm (2.2 in)31 March 1931
Apr15.5 mm (0.6 in)14 April 1917
May38.1 mm (1.5 in)26 May 1895
Jun34.8 mm (1.4 in)15 June 1956
Jul45.0 mm (1.8 in)27 July 1909
Aug32.5 mm (1.3 in)24 August 1907
Sep36.1 mm (1.4 in)23 September 1917
Oct22.6 mm (0.9 in)26 October 1926
Nov27.9 mm (1.1 in)13 November 1906
Dec25.7 mm (1.0 in)28 December 1923

Period of Record Coverage

1956 to 1957
Days with data per year at Lewiston 2 years of record at Lewiston, 1956 to 1957. 1 years have data for under 90 percent of days and are left out of rankings: 1957. 1956: 363 of 366 days1957: 59 of 365 days
2 years of record at Lewiston, 1956 to 1957. 1 years have data for under 90 percent of days and are left out of rankings: 1957.
Days with data per year at Lewiston
YearDays with dataShare of yearComplete
195636399%Yes
19575916%No

Latest Records

0

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

Extremes by Year

1895 to 1957
Yearly extremes at Lewiston: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.2 C (108.0 F)195630.8 C (87.4 F)2
Coldest night (TNn)-26.7 C (-16.1 F)1957-23.3 C (-10.0 F)2
Wettest day (Rx1day)55.4 mm (2.2 in)193120.3 mm (0.8 in)39
Wettest five days (Rx5day)69.1 mm (2.7 in)193135.5 mm (1.4 in)38
Longest dry spell (CDD)73 days193129 days39

Hottest day (TXx)

Hottest day (TXx) at Lewiston by year The hottest day of the year at Lewiston, 1895 to 1957. The record is 42.2 C (108.0 F) in 1956, marked on the chart; the median year is 30.8 C (87.4 F). 1020304050190019201940Record: 42.2 C (108.0 F) in 1956
The hottest day of the year at Lewiston, 1895 to 1957. The record is 42.2 C (108.0 F) in 1956, marked on the chart; the median year is 30.8 C (87.4 F).
Hottest day (TXx) at Lewiston by year
YearHottest day (TXx)
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
195642.2 C (108.0 F)
195719.4 C (66.9 F)

Coldest night (TNn)

Coldest night (TNn) at Lewiston by year The coldest night of the year at Lewiston, 1895 to 1957. The record is -26.7 C (-16.1 F) in 1957, marked on the chart; the median year is -23.3 C (-10.0 F). -28-26-24-22-20190019201940Record: -26.7 C (-16.1 F) in 1957
The coldest night of the year at Lewiston, 1895 to 1957. The record is -26.7 C (-16.1 F) in 1957, marked on the chart; the median year is -23.3 C (-10.0 F).
Coldest night (TNn) at Lewiston by year
YearColdest night (TNn)
1895n/a
1896n/a
1897n/a
1898n/a
1899n/a
1900n/a
1903n/a
1904n/a
1905n/a
1906n/a
1907n/a
1908n/a
1909n/a
1910n/a
1911n/a
1912n/a
1913n/a
1914n/a
1915n/a
1916n/a
1917n/a
1918n/a
1919n/a
1920n/a
1921n/a
1922n/a
1923n/a
1924n/a
1925n/a
1926n/a
1927n/a
1928n/a
1929n/a
1930n/a
1931n/a
1932n/a
1933n/a
1956-20.0 C (-4.0 F)
1957-26.7 C (-16.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Lewiston by year The wettest day of the year at Lewiston, 1895 to 1957. The record is 55.4 mm (2.2 in) in 1931, marked on the chart; the median year is 20.3 mm (0.8 in). 0204060190019201940Record: 55.4 mm (2.2 in) in 1931
The wettest day of the year at Lewiston, 1895 to 1957. The record is 55.4 mm (2.2 in) in 1931, marked on the chart; the median year is 20.3 mm (0.8 in).
Wettest day (Rx1day) at Lewiston by year
YearWettest day (Rx1day)
189538.1 mm (1.5 in)
189612.7 mm (0.5 in)
189712.7 mm (0.5 in)
189820.3 mm (0.8 in)
189910.2 mm (0.4 in)
190025.4 mm (1.0 in)
190319.8 mm (0.8 in)
190417.0 mm (0.7 in)
190527.2 mm (1.1 in)
190627.9 mm (1.1 in)
190732.5 mm (1.3 in)
190817.0 mm (0.7 in)
190945.0 mm (1.8 in)
191018.3 mm (0.7 in)
191115.2 mm (0.6 in)
191223.4 mm (0.9 in)
191324.6 mm (1.0 in)
191411.4 mm (0.4 in)
191527.2 mm (1.1 in)
191620.3 mm (0.8 in)
191736.1 mm (1.4 in)
191816.0 mm (0.6 in)
191919.3 mm (0.8 in)
192019.8 mm (0.8 in)
192118.5 mm (0.7 in)
192220.8 mm (0.8 in)
192325.7 mm (1.0 in)
192414.5 mm (0.6 in)
192523.6 mm (0.9 in)
192625.1 mm (1.0 in)
192729.2 mm (1.1 in)
192812.4 mm (0.5 in)
192916.3 mm (0.6 in)
193017.3 mm (0.7 in)
193155.4 mm (2.2 in)
193221.6 mm (0.9 in)
193316.3 mm (0.6 in)
195634.8 mm (1.4 in)
19577.9 mm (0.31 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lewiston by year The wettest five days of the year at Lewiston, 1895 to 1957. The record is 69.1 mm (2.7 in) in 1931, marked on the chart; the median year is 35.5 mm (1.4 in). 020406080190019201940Record: 69.1 mm (2.7 in) in 1931
The wettest five days of the year at Lewiston, 1895 to 1957. The record is 69.1 mm (2.7 in) in 1931, marked on the chart; the median year is 35.5 mm (1.4 in).
Wettest five days (Rx5day) at Lewiston by year
YearWettest five days (Rx5day)
189538.1 mm (1.5 in)
189625.3 mm (1.0 in)
189716.5 mm (0.6 in)
189819.1 mm (0.8 in)
189910.2 mm (0.4 in)
1900n/a
190328.7 mm (1.1 in)
190436.1 mm (1.4 in)
190560.7 mm (2.4 in)
190645.0 mm (1.8 in)
190736.8 mm (1.4 in)
190834.0 mm (1.3 in)
190949.1 mm (1.9 in)
191053.6 mm (2.1 in)
191120.6 mm (0.8 in)
191236.6 mm (1.4 in)
191337.9 mm (1.5 in)
191424.6 mm (1.0 in)
191543.8 mm (1.7 in)
191646.8 mm (1.8 in)
191744.4 mm (1.7 in)
191828.1 mm (1.1 in)
191933.8 mm (1.3 in)
192038.1 mm (1.5 in)
192142.0 mm (1.7 in)
192224.9 mm (1.0 in)
192334.8 mm (1.4 in)
192428.5 mm (1.1 in)
192527.4 mm (1.1 in)
192635.5 mm (1.4 in)
192755.9 mm (2.2 in)
192832.8 mm (1.3 in)
192935.4 mm (1.4 in)
193023.4 mm (0.9 in)
193169.1 mm (2.7 in)
193237.8 mm (1.5 in)
193323.6 mm (0.9 in)
195650.6 mm (2.0 in)
195720.8 mm (0.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lewiston by year The longest dry spell of the year at Lewiston, 1895 to 1957. The record is 73 days in 1931, marked on the chart; the median year is 29 days. 020406080190019201940Record: 73 days in 1931
The longest dry spell of the year at Lewiston, 1895 to 1957. The record is 73 days in 1931, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Lewiston by year
YearLongest dry spell (CDD)
189520 days
189625 days
189719 days
189814 days
189911 days
19001 day
190326 days
19048 days
190518 days
190645 days
190727 days
190828 days
190943 days
191041 days
191135 days
191222 days
191328 days
191455 days
191519 days
191648 days
191754 days
191826 days
191949 days
192025 days
192139 days
192230 days
192335 days
192453 days
192527 days
192648 days
192728 days
192852 days
192944 days
193035 days
193173 days
193237 days
193329 days
195644 days
195712 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 Lewiston standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lewiston 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).