OLD FAITHFUL, WY

Maximum of Maximum Temperature (Degrees Fahrenheit)

(486845)

File last updated on May 13, 2024
a = 1 day missing, b = 2 days missing, c = 3 days, ..etc..,
z = 26 or more days missing, A = Accumulations present
Long-term means based on columns; thus, the monthly row may not
sum (or average) to the long-term annual value.
MAXIMUM ALLOWABLE NUMBER OF MISSING DAYS : 5
Individual Months not used for annual or monthly statistics if more than 5 days are missing.
Individual Years not used for annual statistics if any month in that year has more than 5 days missing.

YEAR(S)JANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDECANN
1904-----z-----z-----z-----z67.00b81.00 82.00a84.00a81.00 70.00b56.00 43.00 -----z
190544.00j50.00 61.00b57.00e72.00a81.00 91.00 97.00 81.00b67.00k56.00o36.00c-----z
190642.00j53.00h56.00e67.00d69.00k80.00b81.00a85.00 77.00a71.00i49.00a50.00a-----z
190732.00j50.00 47.00 60.00 64.00a72.00i90.00 89.00d82.00 71.00 52.00 49.00 90.00x
190840.00 54.00 44.00 68.00 67.00c76.00 85.00 85.00 79.00b65.00c58.00a-----z-----z
1909-----z42.00c45.00 47.00b58.00 69.00o-----z-----z69.00d59.00 53.00c36.00h-----z
1910-----z37.00 59.00c73.00b72.00s88.00a87.00 82.00 80.00d73.00e46.00 35.00d-----z
191139.00b37.00e44.00 43.00k72.00 77.00f82.00b76.00 79.00b66.00a46.00 58.00 -----z
191243.00c39.00g48.00c49.00a68.00 89.00 77.00c79.00a66.00d66.00m49.00l44.00l-----z
191330.00m36.00f41.00c61.00 80.00a82.00 80.00c83.00c73.00c67.00b56.00c42.00d-----z
191430.00 42.00 54.00 61.00 77.00a76.00 -----z81.00i80.00 69.00 60.00d34.00 -----z
191539.00a43.00 55.00 67.00 70.00c75.00a80.00 84.00 77.00 68.00 58.00 42.00 84.00e
191632.00 55.00 54.00 67.00 68.00 78.00i89.00f82.00c81.00a61.00y-----z-----z-----z
1917-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1918-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1919-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1920-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1921-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1922-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1923-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1924-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1925-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1926-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1927-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1928-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1929-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1930-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1931-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1932-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1933-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1934-----z-----z-----z-----z-----z-----z-----z-----z78.00 79.00 62.00 47.00 -----z
1935-----z-----z-----z-----z-----z79.00 90.00 87.00 76.00 72.00a43.00b44.00c-----z
193632.00 35.00 47.00d64.00 82.00 87.00b92.00 86.00 79.00 70.00 58.00 36.00q92.00w
1937-----z-----z-----z61.00v71.00 85.00b87.00 85.00 80.00 66.00 50.00a40.00 -----z
1938-----z-----z-----z-----z71.00 79.00a83.00 80.00 81.00e-----z-----z-----z-----z
1939-----z-----z-----z-----z76.00 85.00 89.00 83.00 76.00 59.00 56.00 53.00 -----z
194044.00 39.00 60.00a58.00 75.00 89.00a87.00d89.00 -----z65.00 -----z-----z-----z
1941-----z-----z-----z-----z73.00 86.00 82.00 85.00 68.00 61.00 -----z-----z-----z
1942-----z-----z-----z64.00 -----z75.00 -----z89.00 -----z-----z-----z-----z-----z
1943-----z-----z-----z-----z-----z75.00b86.00a83.00a77.00 -----z-----z-----z-----z
1944-----z-----z-----z-----z-----z-----z85.00a86.00 78.00a-----z-----z-----z-----z
1945-----z-----z-----z-----z-----z-----z84.00 82.00b78.00a-----z-----z-----z-----z
1946-----z-----z-----z-----z-----z-----z-----z85.00 -----z-----z-----z-----z-----z
1947-----z-----z-----z-----z-----z-----z84.00 85.00 83.00b-----z-----z-----z-----z
1948-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1949-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1950-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1951-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1952-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1953-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1954-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1955-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1956-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1957-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1958-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1959-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1960-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1961-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1962-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1963-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1964-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1965-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1966-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1967-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1968-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1969-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1970-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1971-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1972-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1973-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1974-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1975-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1976-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1977-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1978-----z-----z-----z-----z-----z-----z-----z-----z78.00f66.00a57.00a34.00 -----z
197933.00 42.00 52.00 57.00a73.00 84.00a82.00a85.00 79.00 72.00 50.00 49.00 85.00c
198037.00 47.00 42.00 65.00 72.00a75.00b83.00 79.00a79.00a70.00c58.00a46.00 83.00i
198150.00 47.00 51.00 66.00c67.00h82.00a-----z83.00 81.00 62.00c59.00a45.00 -----z
198236.00d43.00a44.00d54.00k-----z79.00 82.00c84.00d78.00q64.00c41.00a36.00d-----z
198338.00a49.00 50.00 -----z73.00g77.00a94.00d90.00a79.00d-----z-----z-----z-----z
1984-----z-----z43.00b65.00l73.00h89.00j93.00b98.00a-----z-----z44.00a40.00a-----z
1985-----z39.00a49.00b64.00g73.00b79.00c85.00 86.00a75.00i57.00e52.00c35.00a-----z
198646.00 50.00 55.00a62.00 79.00 81.00c86.00c86.00a84.00b61.00 49.00 39.00 86.00j
198743.00 52.00 54.00 72.00c75.00a84.00c88.00 78.00 82.00c74.00b62.00c48.00 88.00o
198855.00a62.00a62.00 67.00 75.00b89.00a86.00 85.00a80.00a72.00b54.00d40.00a89.00n
198944.00 44.00a61.00c65.00h66.00d77.00a85.00 82.00 74.00 72.00c61.00a42.00 85.00u
199041.00 45.00 54.00 64.00 66.00b85.00 85.00a86.00 82.00 69.00a55.00 47.00 86.00d
199136.00a52.00 51.00 58.00 68.00a75.00 83.00 85.00a82.00 74.00b47.00 39.00 85.00e
199243.00a56.00b57.00a72.00d74.00a81.00 80.00 84.00a73.00a75.00a48.00 40.00b84.00n
199343.00b50.00b58.00 55.00a72.00b76.00d79.00a83.00 74.00b71.00b48.00a45.00a83.00r
199446.00b49.00 60.00a68.00 73.00 86.00a87.00a89.00 80.00 64.00b47.00 41.00 89.00g
199541.00 56.00 54.00a58.00 69.00a76.00a84.00a85.00 82.00 67.00b51.00c39.00 85.00i
199645.00a52.00 48.00b63.00a67.00a81.00a82.00 84.00 77.00a-----z53.00a39.00c-----z
199744.00c42.00 52.00a55.00c70.00a76.00 81.00 86.00 80.00a72.00d57.00 45.00b86.00o
199841.00 42.00 51.00 62.00a67.00 77.00a87.00 84.00 85.00 65.00b49.00b47.00d87.00j
199944.00a44.00a60.00a58.00 74.00 84.00 86.00 88.00 80.00a68.00 63.00 48.00 88.00d
200041.00 44.00 52.00 64.00 64.00 79.00 85.00 88.00 82.00 64.00 44.00 37.00 88.00
200142.00 34.00 51.00 64.00 75.00d80.00 85.00b88.00f79.00a60.00y58.00a33.00 -----z
200239.00 42.00 53.00a56.00 74.00a84.00a91.00 77.00a78.00 56.00b50.00 40.00 91.00f
200338.00 40.00 53.00 60.00a80.00 77.00 89.00 88.00 78.00 72.00a43.00a43.00a89.00d
200442.00 41.00 59.00 58.00b66.00d73.00b84.00 81.00a75.00c64.00e55.00 41.00 84.00q
200549.00 49.00 48.00 58.00a-----z81.00 87.00 82.00 76.00 66.00a52.00 44.00b-----z
200643.00a44.00 48.00a67.00 73.00a81.00 87.00b81.00 80.00 65.00a51.00 46.00a87.00g
200743.00 46.00 54.00 68.00a73.00d83.00b89.00b85.00a80.00 63.00c52.00a37.00b89.00p
200837.00a45.00c40.00 56.00d71.00b79.00b88.00a82.00a77.00a74.00b55.00 40.00a88.00r
200947.00 44.00 55.00a60.00f73.00j76.00 83.00 84.00b78.00b67.00 56.00a-----z-----z
201042.00 42.00 49.00a62.00c67.00b81.00 81.00 82.00a77.00 79.00 58.00a38.00b82.00j
201138.00b44.00 39.00c48.00c57.00 79.00 82.00 84.00 77.00 75.00 44.00 40.00 84.00h
201241.00 41.00 59.00 71.00 74.00 82.00 85.00 85.00 79.00 68.00 58.00 38.00 85.00
201341.00 37.00 51.00 57.00 73.00 86.00 88.00 84.00 82.00a61.00 57.00 39.00 88.00a
201441.00 43.00 50.00 57.00 73.00 75.00 83.00 81.00 76.00 66.00 60.00 51.00 83.00
201554.00 51.00 55.00 64.00 66.00 88.00c86.00 87.00 80.00 73.00 45.00 39.00 88.00c
201640.00 46.00 51.00 66.00 70.00 86.00 85.00 85.00 83.00 66.00 60.00 31.00 86.00
201740.00 51.00b56.00 55.00k70.00c79.00a87.00a84.00 87.00 60.00d55.00 42.00e-----z
201841.00c36.00a49.00b46.00w72.00y77.00g86.00 90.00 78.00 65.00 49.00 44.00 -----z
201942.00 40.00 56.00 60.00 68.00 76.00 85.00c85.00 82.00d59.00 51.00 41.00 85.00g
202038.00 40.00 52.00 61.00 78.00 79.00b84.00c88.00a86.00 70.00d60.00 46.00 88.00j
202137.00 43.00 52.00c61.00a67.00c84.00 90.00 85.00 83.00 70.00 55.00 44.00 90.00g
202236.00 40.00 63.00 54.00 72.00a81.00 87.00 87.00 87.00 74.00 54.00 40.00k87.00l
202339.00u42.00q42.00l61.00q73.00c75.00g88.00f85.00i72.00f68.00m48.00n44.00d-----z
202444.00c49.00g55.00i56.00p68.00x-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN41.20 45.00 52.03 61.54 71.05 80.68 85.30 84.72 78.95 67.58 53.05 42.05 86.60
S.D.4.91 5.94 5.78 5.94 4.91 4.27 3.48 3.71 3.93 5.30 5.60 5.28 1.90
SKEW0.37 0.51 -0.24 -0.29 -0.38 0.28 0.20 0.83 -0.82 -0.08 -0.26 0.43 -0.52
MAX55.00 62.00 63.00 73.00 82.00 89.00 94.00 98.00 87.00 79.00 63.00 58.00 89.00
MIN30.00 34.00 39.00 47.00 57.00 73.00 77.00 76.00 66.00 56.00 41.00 31.00 83.00
YRS51 54 58 50 55 60 64 67 65 57 59 56 10