YELLOWTAIL DAM, MT

Average of Average Temperature (Degrees Fahrenheit)

(249240)

File last updated on March 29, 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
1948-----z-----z-----z-----z-----z-----z56.48g73.76 65.53 51.58a37.97 22.18 50.20g
19499.81 20.21 34.15 55.30 59.82 65.45 73.85 75.07a60.22 45.82 50.15 23.89 47.81
19505.98 33.70a31.02a44.90a51.40 61.80 68.40 69.18 59.90 -----z-----z-----z47.36c
1951-----z32.63i30.67j43.50 58.08 57.53 71.42 69.82 57.02c47.90 -----z-----z57.90e
195223.19 31.59 31.39 51.67a57.92 68.18 71.71 73.64i-----z-----z-----z-----z47.95e
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-----z36.03 36.03k
196317.05a40.41a43.92 46.92 58.73 65.13 74.35 73.94 68.88a57.98 42.92 27.37 51.47
196433.74 34.60 33.94 46.57a58.82 64.78 77.27 69.29 58.33 53.69 33.95 23.85 49.07
196533.65 30.27 25.55 49.33 55.34 63.88 73.87 70.81 49.57 55.98a40.82 32.45 48.46
196620.35a26.20 40.88a45.05 61.40 65.15 77.71 70.71 66.33 52.32a37.15 30.89 49.51
196732.73 36.23 34.17a44.95 54.27 60.33 73.08 73.48 65.62 54.39 37.93 26.82a49.50
196825.50 35.72 44.47 47.74a54.56 63.82 72.87 69.81 62.90 52.90 39.28g23.79 50.37a
196911.33a26.77 33.90 53.02 59.35 62.12a72.03 76.85a65.68 41.26 39.66a30.47 47.70
197021.61 33.70 30.37 41.70 59.08 68.22 75.68 77.48 60.02 48.21b37.03 29.77 48.57
197123.94 31.09 38.32 47.83 57.79 67.31a71.89 78.69 59.47 48.92 39.65 26.58 49.29
197220.40 33.07 45.10a48.50 58.23 69.82 69.94 73.84 59.60 48.77 38.20 24.61 49.17
197328.13 33.11 40.60 44.66a57.52a68.03 74.03 75.68 60.93 55.85 34.48a36.71 50.81
197428.98b40.39 40.60 52.33 54.53 68.72 76.39 68.19 60.16a55.12a41.48 35.40b51.86
197529.11 21.52a33.40 39.29b53.77 62.80c75.84b69.68 62.88 52.53 37.57a35.45 47.82
197627.96h37.54b37.58 50.48b59.73 64.48a75.84 72.89 65.50 50.58 40.93 38.03a53.96a
197723.19 41.74a40.13 52.78 59.94 70.75 75.02 69.13 62.20 53.17a35.83 27.37 50.94
197816.52 21.39a40.08 50.75 55.98 66.58 72.00 71.32 65.42 54.71b29.04d25.00a47.40
197913.75c25.61 40.59b46.95 57.40 67.57 73.88a73.89 68.83 56.52 36.52 39.85 50.11
198022.18 33.36 36.65 54.48 60.87 66.92 76.13 70.15 64.87 52.38c43.88 34.31 51.35
198137.77 36.84 44.20c54.70 57.90a64.28 73.39 73.66 67.14a50.74 45.67 33.97 53.35
198220.87 33.38 38.17a47.60 55.40 62.91a72.45a75.52d61.17 52.35 35.62a32.53a49.00
198337.40 41.45 43.39 46.50a55.45 66.12 75.95 80.13 62.78 54.29 40.33 11.31 51.26
198436.15a39.96a40.80d47.76c57.85a66.92 76.12a78.34 58.82 48.98c41.77b22.04e51.29
198523.98b28.29b37.31b55.00a62.77 66.81a77.30c71.06 58.75 52.60b20.79b33.05 48.98
198641.50a27.20 50.24 49.27 57.39 71.29a71.56 73.70a58.07 54.38a36.38b35.37a52.20
198734.73a38.79 42.03 56.50 62.35 69.52 71.50b67.68a62.80 52.63a43.52 32.66b52.89
198829.93c33.27a43.47a53.88a61.68 77.41a77.73 73.18a61.88 56.18a41.04b34.97b53.72
198933.37a19.84c35.05a49.23 59.05 66.87 77.55a72.68 64.48 52.00 43.22a30.31 50.30
199036.61c33.69d41.84 50.10a56.52a65.91a74.25a74.93a70.30 53.28a45.33 24.86c52.30
199124.64b44.35b40.28a47.40a57.84 68.50d76.11c77.87 63.08d51.84b37.32 37.48b52.23
199240.24d44.70b47.95a53.14a61.82 68.59a68.50a69.22a63.82 53.70a40.59c25.32a53.13
199323.98d25.43 45.13a50.22 61.17a65.17 65.85 69.32 61.41a51.69 37.15c38.70a49.60
199432.73c28.40c46.02e50.58 63.18 70.43a74.50b75.79c66.02a51.15d37.26a34.76f54.19a
199534.32a36.69a37.92a45.66a53.60a66.19a72.55a75.71b63.22 52.34b41.67f32.71b51.90a
199619.98d34.11a32.43a51.41a53.55 71.12e75.35a76.36b62.48b50.83b27.96b26.86f50.51a
199725.85e36.56a43.52c43.12d60.55c69.02a70.60b70.80f65.94d53.86i39.29a32.26h50.49c
199832.26b39.38d35.95c48.85f60.57d61.78e77.45 74.25g70.41h49.90b41.52c30.30f49.85d
199934.65h42.73f43.21j46.14l56.75k65.20 75.29e74.65e60.97k54.16i49.12d39.96g66.06h
200032.08k33.86g42.04h50.16k60.64i66.59a76.17d74.89i62.48i48.62e29.96d23.50h55.33h
200132.42f21.43g39.92g48.78e60.09h66.88e78.04d78.61d65.81d50.63e43.02i32.33m64.79f
200230.59i36.87e30.13e43.19f55.96f68.91g79.88g71.15g65.09m43.15h42.56c35.61c36.29h
200335.31g31.27f35.14c52.78a57.55 65.87 79.72a80.02a63.52c56.05c34.30b34.45a55.94b
200425.85a34.05 44.87a52.10f56.43a63.78e74.43c70.88a62.44d50.75e41.00c37.57a51.10a
200524.05a35.46c41.44 47.88b54.45a65.25 76.08a70.95a63.38 50.79 42.13 28.60 50.04
200640.95 31.46a37.05 50.45b57.93b69.52a79.67a73.34 60.65 44.80a37.52a33.80a51.43
200729.94 27.63b45.88c47.07b59.11c67.90 79.80a72.38e63.18b51.77 39.55 30.58 51.23
200825.09b32.23a38.18 43.98 54.52 62.32 74.08a70.63a53.26a47.45c42.52a22.47 47.23
200931.80a33.35a33.32a45.53 56.53 62.17 71.77 70.33a63.86b41.34c41.28a20.72d47.67
201024.76 25.67a42.11d47.18b50.59c63.47 71.67a71.48c60.14b54.82a34.96c27.93c47.90
201129.14f25.37e35.60b43.80c51.12a63.16b75.98a74.57a64.00b54.48e38.60 33.32 50.91a
201232.27 30.36a47.59c49.69c54.50e69.31c79.60 74.85 66.15 50.10 39.77b29.24d51.95
201330.27 33.00 37.15a42.27 57.94 66.34a75.79b74.95 63.98e45.42 36.65 26.42g51.25a
201433.44 20.62 34.66b46.43 56.76 63.08 74.02 71.18 61.07 55.48a32.48 30.00 48.27
201532.55 32.75 46.83a47.73d53.16f70.10 73.08e71.74 65.33 54.20d34.05 31.86b50.93a
201630.90a40.26 43.97a49.66a56.23e70.57 74.60 71.82 63.20 52.58 45.38 23.53a51.89
201718.06e39.58p42.84 47.30 57.77 68.26a78.63 70.73 61.43 48.30a40.90 31.71e51.45a
2018-----z-----z41.60b44.43 60.60 65.15 72.65 70.06 59.67 46.65 36.58 30.50 52.79b
201930.93b8.91 28.18 48.64a50.72f64.92 71.27 72.29 63.03 43.05 40.33a37.39 46.27a
202035.82 36.67 39.64b44.12a54.85e67.81d73.50 73.85 63.21a45.11c35.50a38.28d50.70
202134.53b18.46c41.88b47.62 54.68f73.16b77.50e73.14f63.93a52.75c44.72 27.52 48.21b
202234.17b28.55 36.02b35.59s58.94w65.07i76.50 76.21 66.96c43.00s21.61h16.07h53.07f
202325.38k31.62 26.98d-----z-----z-----z-----z-----z-----z-----z-----z-----z29.30j
2024-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z
Period of Record Statistics
MEAN27.69 31.96 38.91 48.38 57.50 66.44 74.47 73.12 62.67 51.26 38.79 30.39 50.23
S.D.7.97 6.96 5.50 3.73 2.94 3.31 2.90 3.08 3.54 3.74 4.98 5.73 1.83
SKEW-0.57 -0.73 -0.31 0.09 -0.23 0.30 -0.36 0.40 -0.89 -0.80 -0.75 -0.68 0.05
MAX41.50 44.70 50.24 56.50 63.18 77.41 79.80 80.13 70.30 57.98 50.15 39.85 53.72
MIN5.98 8.91 25.55 39.29 50.59 57.53 65.85 67.68 49.57 41.26 20.79 11.31 47.23
YRS55 58 61 58 56 62 63 59 60 59 58 54 40