WEST YELLOWSTONE, MT

Average of Average Temperature (Degrees Fahrenheit)

(248857)

File last updated on March 28, 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
19248.82a18.71 16.56 31.17 41.98 48.52 55.55 53.32 47.02d36.48c19.20c3.39c31.73
192514.38c21.54e25.18f37.22l44.58f57.32p58.95 54.16 48.25b33.52a22.64b20.83b34.28d
192612.46f21.98d21.97b38.60f47.81 53.46b59.61 56.34 40.88b38.60 29.50 12.31g41.13c
192713.10e14.00i18.88f30.81l40.61c53.40 59.03 53.57a47.41a37.67a29.03 8.11c37.99c
192818.04g10.29l23.75a26.42d47.70a47.79a58.52b52.34 47.50b37.75c23.74a9.63 37.51b
19296.74l6.98d21.72d29.91c38.46d49.93a57.85a59.71 40.93g33.86c12.83 15.91b32.72b
1930-5.32a17.43g18.56g35.94d-----z46.83 58.02 57.60 46.97 35.76 17.80 9.19e33.64c
193114.27c16.26c16.12j33.72 41.75o-----z58.98c56.69 46.66n36.52b18.17 11.84 30.81d
19324.26 14.69 19.60a33.70 44.35 51.22c57.68f55.02 47.15 32.16b25.57 4.48 30.20a
193316.21 4.55 19.93a30.47 39.45 54.84b62.31b56.20a47.75 41.59c25.80b23.32 35.20
193419.00 24.45 31.42 41.58 50.08 51.30 60.69 58.11 44.33 42.27 29.53a16.35a39.09
193516.61 17.98 22.66 31.45 40.02 51.25 59.98 56.50 50.08 37.89 20.95 16.40e35.15
193613.35 14.98 20.24h36.18 47.78a56.40 65.10 59.02 47.52a37.65 15.89b13.30c37.02a
1937-4.56g13.88h23.86f32.90j46.25c51.38a59.68 57.03a50.78a40.23c27.33d14.80d43.43d
193812.48g20.11f25.78f33.46b42.19 53.38 57.87 56.71 52.67 39.58 14.50 15.40 40.64c
193914.21 8.62 26.66 36.92 47.28a49.13 60.92 57.77 50.52 38.42a27.77 23.03 36.77
194014.45 19.52 26.48 36.21a47.26 54.22 59.80a59.10 51.20 40.16 17.98 16.68 36.92
194115.62a20.68 27.47 34.47 46.50e52.82 59.69 57.98 43.98a36.08a24.60 17.69 36.47
194210.11 11.12 21.79 36.98 40.55 49.47 60.63 58.77 48.07 37.18 21.08 17.32 34.42
19438.85 15.29 17.69 39.00 41.32 49.36a58.35 56.39 49.12 38.94 27.10f13.74 35.28a
19448.89 17.64a18.52 34.45 44.23 48.95 56.31 54.45 46.58 40.76 21.68 12.82a33.77
194516.90 19.18 25.03 29.07 43.74 47.63 57.68 55.55 44.13 38.81 23.47 12.29 34.46
194611.21 16.59 27.94 38.22 41.39 51.78 59.97 56.85 46.35 31.76 23.61b18.56 35.35
19479.37 17.78a25.82c31.61l-----z47.86l59.21 56.18a48.88 40.76 19.07 15.03 32.46c
194810.27 14.36 -----z35.10j45.07a54.19a58.41b56.73 48.57 37.81 18.23 9.81 35.34b
1949-1.79 14.09a26.28b37.17 46.15 51.98 59.18 58.47 48.05a32.73 30.64b13.40g36.63a
19509.19b19.14 21.90 31.07 39.23 50.38a56.13 55.39 47.32 40.40 25.60 21.24 34.75
19518.98 19.41 19.27 33.40 45.08a45.93 57.69 54.56 46.21a34.24 19.75b10.85 32.95
195212.19 12.24 18.87 36.55 44.53 52.17a56.85 57.65 51.42 40.77 15.88a16.84c34.66
195324.05 15.09a25.14b29.18 38.74 50.22 62.35 58.83a51.60a40.68a29.35 13.18 36.54
195417.98 22.59 20.13d35.50 45.06 48.27 61.74 55.92 48.47 35.40 29.67 10.10a35.90
19559.03 9.83a14.27 30.18 42.44 50.18 60.34 60.15 47.95 37.57b16.98a17.33e33.02
195617.47 8.45 21.27 35.33 47.85 54.42 59.87 54.98 49.73 37.61 16.69a15.40 34.92
19571.80a21.88 23.76 33.10 45.97 52.05a60.37 58.32 48.32 37.84 18.28 17.79 34.96
195813.79 24.84 23.21 32.60 50.77 53.73 56.44 60.00 47.03 39.21 22.03 19.27 36.91
195913.27 17.11 22.06 34.03 39.79 55.62 59.50 57.55 47.45 36.95 19.67 12.52 34.63
196010.50a10.76 25.47 35.33 42.63 53.72 63.15 55.58 50.17 36.74 21.88 10.60 34.71
19619.19 21.36 25.65 31.95 44.35 57.47 61.47 61.03 42.23 35.21 19.21a9.97 34.92
19624.82 17.55 21.89 34.58 44.37 53.07 57.24 55.48 48.78 42.18 27.27 17.27a35.38
19632.52a24.75 23.74 32.25 45.47 50.35 59.34 59.58 53.72 42.79 26.45 11.73 36.06
19649.25a8.31 16.97 31.83 43.80a50.23 61.79 54.53 45.95 38.82a23.52 13.39 33.20
196515.16 13.68 14.37 35.75 40.87a50.37 58.65 55.66 39.88 41.15 29.45a15.45 34.20
196612.29 13.59 22.71 32.22 46.87 51.67 62.95 56.76 51.55 34.82a25.82 13.08 35.36
196717.03 16.05 23.48 29.93 41.79 51.13 61.05 60.42 51.78 37.39 24.57b6.82 35.12
196810.50 21.41 28.31 30.32 42.05 51.25 62.00 54.15 46.65 36.90 21.10 11.15 34.65
196916.27 17.39 19.18 36.65 48.55 50.03 59.85 60.87a50.53 31.45 22.47 14.61 35.66
197014.73 20.38 20.68 26.35 42.84 54.27 61.10 61.76 43.28 32.21 23.85 13.40 34.57
197113.84 15.23 19.15 31.90 43.32 52.73 58.79 62.74 42.60 34.47 22.17 11.52 34.04
197211.71 17.69 28.10 32.75 44.71 53.70 57.15 58.27 43.62 36.63 23.10 7.08 34.54
19737.92 17.50 22.68 29.91c43.13 51.17 59.69 58.63 46.63 38.53 25.25 16.74 34.81
197413.06 16.22s25.05c33.88a41.15 56.12a61.89 55.69 48.85 39.83a25.14a10.23 37.35a
197510.39 13.70 22.52 26.38 38.94 49.47a62.24 54.38a48.32 37.15 19.72 17.18a33.36
197615.29 17.83 18.20a33.57 45.50 51.19a61.26 55.81 49.67 35.95a20.19q10.37 35.88a
19777.76 18.02 19.54d37.84a42.05a58.20 60.00 56.56 47.22 37.86c23.33 18.24 35.55
197817.85 20.44a29.05 35.03 42.26 52.48a58.89 55.23 47.07 38.43b19.69n2.11m39.67b
19794.35k15.72h-----z37.92x43.65a52.65 61.03 57.92 51.42 39.02 14.84b18.31b42.35d
198010.43b-----z24.67p28.25x44.27a51.05 59.19 53.08 48.28 36.87a25.54b21.05 38.86c
198118.31 19.10b27.54c35.82 44.14b52.13 58.56 58.82 50.48 35.39 27.18 16.84 37.03
198211.13 13.94a25.13 25.86a40.73a50.85 57.53 59.23 47.64b34.26 16.50 11.68 32.87
198317.26 21.00 27.32 29.98 41.44 50.12a56.56 61.25a47.77b38.70a24.20 7.48c35.26
198411.56 13.81 24.68a29.67 42.04d50.02 60.08 58.26 44.86b31.97b21.81a8.56 33.11
19856.55 8.41 18.48a35.92 45.42 52.40 60.35 53.38a42.34b35.08a10.62m12.19 33.68a
198619.18 21.89 32.10a33.97a43.05 56.23 55.73 59.35a-----z37.19 22.24c11.06 35.64a
198711.21 20.46 27.05 39.05 47.90 53.76g56.98a53.98c50.12 38.23 24.43 13.22a34.78a
19889.44 17.59 21.40a36.26e45.73 58.63 62.10 58.55 48.64b43.95 23.40a11.23 36.41
198911.81b10.59 27.52 31.71i43.42 53.15d63.10 57.09c47.63 40.11h25.89g12.29e36.29c
199016.10b15.24a26.78a38.62 42.68a52.40 60.05 59.03 54.08 34.72b23.07c2.25g38.44a
19919.93d-----z-----z-----z-----z-----z-----z61.00 49.77 34.98g18.11c10.29 29.82g
199212.40 22.74 32.26 40.03a50.35 54.72 55.74 55.08l47.03 39.16 18.15 9.69e34.75a
19936.71l8.96p27.02 33.95 47.56 50.78c51.63 54.29 47.53 36.64b16.43b13.39i40.65c
199417.36b15.40b26.57a36.63 49.45 55.63o59.84 60.83a52.43 35.63 13.84b15.79b34.89a
199512.94 21.32 24.90a33.28 42.55 51.14b58.39 57.70h-----z33.34 27.70 12.86c31.84b
19968.19g11.43a22.91b-----z-----z-----z-----z-----z-----z-----z-----z-----z17.17j
1997-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1998-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
1999-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2000-----z-----z-----z-----z-----z-----z62.94v60.05u47.92r39.50x14.64s-----z-----z
2001-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z26.29w12.08s-----z
200211.66o14.29k18.08l33.88q44.60g53.31i63.42g54.35k49.24e33.33e21.27q16.72o41.28j
200323.64m12.38d28.04f36.24e39.65k-----z-----z-----z-----z-----z-----z-----z24.31j
2004-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2005-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2006-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2007-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2008-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2009-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2010-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2011-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2012-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
2013-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN11.94 16.54 23.38 33.67 44.01 51.93 59.41 57.19 47.93 37.29 22.33 13.67 34.99
S.D.5.01 4.65 4.07 3.46 3.00 2.61 2.22 2.38 2.90 2.83 4.43 4.21 1.38
SKEW-0.81 -0.41 -0.05 -0.24 0.24 0.35 -0.41 0.13 -0.46 -0.06 -0.10 0.06 0.28
MAX24.05 24.84 32.26 41.58 50.77 58.63 65.10 62.74 54.08 43.95 30.64 23.32 39.09
MIN-5.32 4.55 14.27 25.86 38.46 45.93 51.63 52.34 39.88 31.45 12.83 3.39 31.73
YRS65 64 62 63 67 66 70 70 69 71 67 67 42