OLD FAITHFUL, WY

Average of Average Temperature (Degrees Fahrenheit)

(486845)

File last updated on August 22, 2019
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-----z41.69b48.05 54.77a55.18a48.17 40.31b30.90 18.34 42.18d
190514.68l21.94c30.66f33.50e38.65a49.77 57.92 62.11 49.91b32.16o28.50s12.82f44.83e
190619.68n20.27m18.48g33.92k42.94n46.11b55.67b55.19d49.12i32.29n23.41a23.47b40.77g
190711.82k22.30 25.39 31.43 38.65a44.38i56.02d55.42g48.38 43.66 28.18 17.58 34.62c
190816.68a20.79 22.37a36.30 40.57d46.25 58.21 53.81 47.41b33.37e26.20b-----z36.54a
1909-----z-----z22.18c23.04d34.03 46.43o-----z-----z44.41h35.35 28.46d9.65h28.61g
1910-----z13.89a33.91d38.02d43.95t52.71b59.23 53.17a48.85g40.85h26.02 14.87h39.56e
191111.25e4.55f21.55 26.56l40.53a50.81f55.14c50.92 48.31c35.22a19.82 16.56 33.26c
191219.31e13.32g20.56d29.88a40.29 52.53 51.63d51.05c38.31d34.35n30.06n14.71n37.94d
19137.13p9.66f19.07d35.15c42.97b54.46e59.65n62.77r47.62f35.31b25.96e17.30d32.89e
191415.92 17.57 26.34 35.77 45.78b49.10a-----z53.75m46.18 39.24b34.36i11.44 31.93c
191515.22b22.24a28.83a41.77 39.12f43.72c51.21c56.26 44.97a38.50 23.43 14.35 34.59a
19169.48a21.53 28.27 34.48 36.69 46.26i57.74l52.81g46.64a36.08y-----z-----z29.52f
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-----z43.25 40.50 28.70 16.58a32.26h
1935-----z-----z-----z-----z-----z49.47 59.19 55.77 49.37 36.27a19.62d15.38c40.72e
193611.08 11.84 17.81d32.03a45.73 55.09b63.48 57.29 46.73 37.94 21.98 13.29q36.46a
1937-----z-----z-----z31.06v43.89 49.41b58.85 56.73 49.08 40.48a27.29a17.61 42.92d
1938-----z-----z-----z-----z40.74 52.36b56.69 55.48a53.54f-----z-----z-----z51.32h
1939-----z-----z-----z-----z44.84 48.28 59.15 55.82 48.92 37.43a28.35 23.87a43.33d
194016.03 21.00 27.32a34.17 46.42 55.68b60.30i58.73 -----z39.79 -----z-----z37.39d
1941-----z-----z-----z-----z45.40 50.52 57.45 55.63 42.32 36.26 -----z-----z47.93f
1942-----z-----z-----z36.00 -----z47.45 -----z56.97 -----z-----z-----z-----z46.81i
1943-----z-----z-----z-----z-----z47.61b56.72a54.52a48.75 -----z-----z-----z51.90h
1944-----z-----z-----z-----z-----z-----z55.55a54.45 45.88a-----z-----z-----z51.96i
1945-----z-----z-----z-----z-----z-----z63.10 61.16b44.69a-----z-----z-----z56.31i
1946-----z-----z-----z-----z-----z-----z-----z57.05 -----z-----z-----z-----z57.05k
1947-----z-----z-----z-----z-----z-----z58.76 54.88a47.89b-----z-----z-----z53.84i
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-----z44.48j36.34b21.00a2.63a19.99i
19792.11 17.30 22.27 28.90a39.65 48.60a55.95a53.18 48.15 36.35 15.38 17.79 32.14
198010.71 21.10 19.65a31.37 40.45b48.33d55.73 50.23a45.25b32.69e22.91a19.79 33.18
198117.95 16.79 24.47 32.42d39.00h46.84a-----z55.05 46.95 33.71e26.97a15.89 31.70b
198212.93q12.71g21.73i26.08l-----z48.02b54.82c54.73e43.64s31.96f16.94l13.97m52.52i
198317.96f18.80e26.18f-----z38.96h47.48a55.26d56.27a45.42e-----z-----z-----z44.65g
1984-----z-----z23.43c30.31n38.26l46.48j59.13d57.32a-----z-----z19.57c8.44g39.86h
1985-----z8.23d18.34f32.95i44.02c49.26c57.77 51.52a40.08j32.60g19.04g11.85g42.16g
198616.29e20.04a28.46c33.33a38.93b52.57c53.71c55.53b42.00c35.68 19.27f12.42e35.36a
198713.20k19.38d23.33g37.54d45.47a50.93c54.21 51.81 46.94d37.83e27.92e15.40 38.74b
198812.60b20.04a24.02 34.50 42.76b55.76a58.92 55.50a46.18b42.22b20.96e13.10b35.55
198914.12b13.56b29.66c33.16h41.50d48.86a60.26 54.17a46.42 36.56d24.84b12.13a34.73a
199015.47 13.24a24.06 36.48 39.12b49.80 57.57b56.42 51.90 34.32c24.09a0.57a33.59
199110.74b23.66 23.55 31.20 40.13a50.83 56.79 58.40a46.46e34.72d19.09c12.77a34.03
199214.03a23.85c31.83a38.37d46.77a50.92 52.63 54.55a44.58e38.63a18.70b9.21c35.34
199311.28b15.06c27.74 32.12b44.50b46.69f49.76b51.40a43.43g36.03b16.19a13.72b29.78b
199417.47b15.64 26.14c34.19d47.10 51.43a56.80a58.34b49.42 35.09d13.09a16.79 35.13
199516.08 24.50b25.64c31.66a40.67b48.59a56.27a55.53a46.15 32.96h26.94c14.68 35.16a
199611.95a15.17b22.70c29.98b38.53b52.45a56.89 54.45a43.30b-----z23.11b16.91d33.22a
199713.07d11.59a23.75a26.56c42.08a52.57a55.34 55.77a48.52a35.21e23.03 10.62b33.18
199818.73a18.34 22.48d31.03a41.94 45.21a60.11 56.60 51.52a36.71c26.48b12.87e35.17
199917.10a16.07a20.74b28.93b38.48 48.66a54.81 56.79 44.80b37.63a30.52 15.18 34.14
200015.19 21.64 23.05 35.36a42.37 50.58 57.79 57.29 44.38 36.79 13.89b12.53 34.24
200112.15 15.11a25.52b32.32b42.78d50.17 58.52b57.20f49.09b36.50y30.26a13.05 32.90b
200212.98a11.19a18.61d32.18 40.80c50.69a60.72a52.70a47.16a30.88e20.92 16.03b32.91
200321.21b11.83g24.70c33.71b41.95 48.98 60.73 58.72a45.27 40.76d16.96e16.82c37.25a
200414.48a15.00b28.84 36.38b40.96d49.23b56.63 53.10b45.48d37.18f23.67a19.12a34.81a
200519.28a16.52a23.78a32.09a-----z48.00 57.97 54.84 45.60a38.72a22.40 14.12b33.94a
200616.09b11.94a21.03a35.30 43.47a51.67 60.71b53.95 45.98a34.15e23.97a13.09d34.28
20076.90a20.82 29.50 35.11c43.67e51.93b62.62b56.33b47.65 35.93d23.95b12.14b35.55
200810.37e15.73c17.68 25.02d38.74b47.55b57.78a55.00a45.24a36.30c27.93a11.91b32.44
200914.55a17.35a21.08a29.06f42.40j47.68 55.47 53.86c50.54b30.48e23.40f-----z36.38d
201016.74 15.94a24.93a30.28c36.54c48.45 55.32 54.43b47.72 39.55 22.19l17.16c35.19a
201113.33b10.92b21.10f27.82e37.34 46.43 56.95 56.52 49.60 38.69 19.75 11.68 33.55a
201217.00 15.78 27.35 36.37 41.66 49.38 60.58 57.76 48.47 35.39 28.27 14.94 36.08
201310.13 15.38 19.67a29.00 43.10 49.95 60.40a58.87 50.09a34.08 23.60 10.84 33.76
201414.19 14.36 22.42 30.48 43.03 47.82 59.05 54.52 48.92 40.50 22.15 18.65 34.67
201517.00 22.68 29.48 34.83 43.73a55.54c56.11 55.65 49.13 42.82 18.88 13.77 36.64
201617.97 20.47 24.50 37.53 42.73 54.67 56.32 55.53 47.47 39.10 30.02 8.02 36.19
20178.00 20.31b30.74 29.45k42.02c51.48a59.25a56.27 47.42 34.63d26.15 16.54e35.71a
201819.96c14.98a22.93b31.29w49.50y50.57g58.42 56.02 49.17 35.45 18.95a13.97 32.21c
201913.42 13.68 19.27 34.70 41.02 49.43 58.98d58.14j-----z-----z-----z-----z32.93e
Period of Record Statistics
MEAN14.22 17.35 24.36 33.01 41.70 49.92 57.32 55.45 46.97 36.95 23.49 14.45 34.41
S.D.3.77 3.96 3.82 3.65 2.84 2.68 2.74 2.29 2.48 2.87 4.47 4.22 1.28
SKEW-0.74 -0.10 0.34 -0.39 -0.24 0.38 -0.23 0.17 -0.77 0.17 -0.36 -0.82 -0.04
MAX21.21 24.50 33.91 41.77 47.10 55.76 63.48 62.11 51.90 43.66 30.90 23.87 36.64
MIN2.11 8.23 17.68 23.04 34.03 43.72 49.76 50.23 38.31 30.48 13.09 0.57 32.14
YRS44 47 48 46 50 56 59 60 55 48 49 47 20