ARROWROCK DAM, ID

Average of Average Temperature (Degrees Fahrenheit)

(100448)

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
1911-----z-----z-----z-----z-----z-----z-----z-----z-----z-----z35.29m28.89 28.89k
191226.42 34.14a40.22a49.02 57.60 68.40 69.22a67.71 56.45 48.77 40.92 28.06 48.91
191324.83e25.73 37.35 51.52 60.44 65.90 70.77 72.61 63.20 49.48 42.35 27.32 49.29
191434.61 33.88 45.95 52.67 61.72a63.47 75.08 72.66 61.47 54.97a41.50 23.05 51.75
191525.65 39.43 47.19 55.87 54.32 60.05 68.81e74.74 -----z-----z38.87 31.43b49.64b
191624.57a34.09 42.87 53.10 -----z64.58r70.45a69.62b-----z47.48c33.11b24.52c44.42c
191729.08y25.68 29.19 43.28a52.98b61.27 76.52e73.36m66.15d53.21g43.88n37.43a49.06d
191832.48b30.88b42.68a46.37d53.88c72.58d75.50j67.81b65.70e51.82a38.17f27.31b49.15b
191928.29b32.45 38.18a49.83c59.57c65.37d75.95c75.48 63.42e44.46e34.29a19.50e48.90
192025.82a33.73c37.23g44.64h54.45c64.09b76.54d73.52a62.52 48.78a37.62e30.78d50.78b
192130.20f32.24c41.98d44.96e55.78a66.38a73.97a74.72b57.84e51.61l40.39c30.39c51.87b
192219.69d26.65d33.72b43.10a54.78b69.13 74.44e75.27a65.29b54.56 34.66e26.91h50.12a
192329.74f22.65a35.81b48.09a56.00 60.08 75.03 72.74d65.55b49.52a39.25d28.02e50.25a
192419.52 39.04c37.72d47.70g63.35 65.02a74.98d72.12b63.41b50.65d37.06c17.52j52.29b
192526.71 33.86c41.12b50.05 59.90b64.66b77.29c71.29b62.21b47.76d36.73b32.61c50.35
192626.85 36.52 43.60b53.73 57.45a70.28a77.38b73.45a56.50d51.80h43.93c29.80k53.97b
1927-----z31.52f39.02b47.63d53.47 65.50g74.67b72.10 60.07 52.91d40.86h24.07k57.12e
192825.08f29.41b40.04d44.73 62.11 62.18b75.24 72.14b64.88d49.58m38.40j21.79l56.34d
192916.60f20.66i38.44d44.81a56.11 62.67a72.94e77.06d59.50c53.08m34.40d34.06e53.33c
193013.87 37.11a41.91b53.28c53.87a62.73b77.25c74.09b63.04f48.72f29.26k17.33b47.94c
193123.28d29.69b39.97l48.78c59.87 69.04b78.10 76.22a63.85d51.00a30.42k21.33j55.53c
193220.65e25.23c36.98a48.92d56.60a64.14a72.15a70.79b63.09a49.68 39.48b20.52a47.35
193323.05b17.21b33.61 46.70 51.05a68.23 76.15 73.40a59.78c54.11d38.98a34.38a48.05
193435.21 40.81b47.98a55.45 63.27 64.71a77.52a76.18c61.02b50.96c42.02c27.13e53.52
193524.94 29.62 35.84 46.92 54.02a64.46b72.87 71.58 65.55b50.20c30.83d26.75a47.80
193623.69d22.96a32.88a48.95 59.93a63.71i77.17b74.00 60.97a52.92a34.03a29.09b46.96a
193711.60e23.83a39.13 44.43a58.47a63.16a75.00w70.80a65.03a51.36c40.75 31.84 45.49a
193827.63d35.81a37.77e49.03 54.25a64.95a72.23c70.76 67.26a51.30a31.60a29.93b49.38
193926.93a23.02c34.81j50.35 60.06 60.82b74.17a74.82 62.43 49.06 38.75 36.23c50.61a
194031.00b33.91g42.73 48.28 60.31 69.05 74.95 74.58a63.25 52.76 33.02 32.29b52.93a
194129.44 36.00 44.55 49.53 59.02 63.83 75.27 72.05 57.68 49.21 39.42 31.89h52.36a
194220.52c28.07 37.18 48.52 51.21 60.05 75.05 72.90 62.87 50.85 36.98d27.82 47.67
194324.74h29.12 34.47 51.25 52.94 59.57 72.37 70.73 65.83 52.02 37.57 31.21b50.64a
194424.12b31.55a35.67a45.78 56.45 59.23 70.82 69.60 62.47 54.53 36.85 28.07b47.93
194529.16 33.95 37.13 44.13 55.73 60.07 73.52 71.76 58.88 53.10 35.67 25.89 48.25
194621.02 25.05 39.06 50.42 55.63 63.95 74.73 72.74 60.27 43.63a36.95a34.31 48.15
194720.69 34.52 42.97 48.62 61.03 60.95 74.00 71.19 62.13 52.73 33.97 29.65 49.37
194827.53 29.79 34.52 45.82 55.03 65.82 69.42 70.24 62.59a51.32a34.73 19.35 47.18
19492.24 24.17a38.18 52.14a58.52 62.97 72.60 73.08 65.15 44.71 42.07 27.92 46.98
195022.45 28.83a36.42 46.72 52.84 61.40 72.05 71.47 63.70 53.61 39.68 35.05 48.69
195123.98 31.62 33.69 49.90 55.89 61.12 74.48b71.18 62.28 47.53 35.48 25.65 47.73
195222.84c24.07 33.53 50.85 56.74 63.27 70.97 72.48 64.72 55.11 32.93 30.89 48.20
195336.43a34.73 40.13a45.25 51.13a58.85 73.58a70.94 65.10a52.30a42.83 29.02 50.03
195431.30a35.86 37.13 48.54d59.02 59.33 73.55b68.47a61.20 48.61 41.93 27.68 49.38
195520.21 23.79 31.63 42.08 53.13 65.07 70.48a74.68 61.50 50.76 31.25b30.92 46.29
195630.53a22.78 37.73 48.57a57.42a63.23 73.97 69.69 62.72 48.34 33.75b28.81 48.13
195718.19 29.12 39.37a47.03 57.26 65.12 73.79 73.86b64.54c48.44 33.03 31.55 48.44
195825.03 36.77 37.55a45.17 62.61 65.17 73.26 75.76 62.14a55.00 37.67a36.58 51.06
195933.66 35.18 40.89 51.45 52.95 67.83 76.03 70.47 59.57 50.39 37.75 30.55 50.56
196026.48 29.93 39.95 50.03 54.97 67.50 79.48 69.35 65.97a50.47 38.41a29.52 50.17
196130.68 37.70 41.61 47.47 58.37a72.18 76.58 77.87 58.03 49.13a35.32 28.81 51.15
196221.19 30.91 36.97 52.32 54.94 64.52 71.71 69.63 63.60 51.40 40.83 35.03 49.42
196325.34 40.86 41.89 46.07 58.81 61.85 70.92 72.42 67.35 56.05 39.82 28.66 50.84
196425.29 25.53 31.82 44.50 53.87 61.52 74.16 68.74 58.08 51.84 36.93a32.63a47.08
196530.89 33.25 36.58 48.77 53.61 62.53 72.02 69.98d55.87 55.13 43.10 31.73a49.45
196631.34 32.27 40.06 47.77 60.03 63.18 73.11 71.42 66.03 48.00 40.95 30.81 50.41
196732.40 35.64 39.56 41.75 54.90 62.97 75.82 75.85 66.28 47.81 40.00 26.35 49.95
196827.21 36.34 42.95 43.70 54.48 63.97 74.52 65.66 59.27 48.63 37.37 29.85 48.66
196929.77 30.89 37.56 48.55 59.11 64.22 71.66 72.10 62.22 43.92 37.75 30.52 49.02
197029.60a36.70 38.48a41.08 54.45 65.23 71.65 73.08 54.70 45.10 38.84a27.27 48.02
197126.60 31.55 33.71 45.72 55.89 61.52 72.21 76.55 56.30 46.68 36.12 27.61 47.54
197226.27 29.59 40.39 44.48 56.81 65.25 71.13 73.35 56.53 49.50 37.00 24.81 47.93
197328.29 36.30 41.08 46.27 57.71 64.13 73.89 71.72a59.82 49.23a36.17 33.40 49.83
197422.47a30.18 37.39 45.12 52.58 68.50 71.95 70.47a62.95 51.07a38.13 28.92 48.31
197524.82 29.54 35.97 39.98 51.39 60.47 75.82 67.06 62.65 48.19 35.53 28.90a46.69
197625.66 27.81 31.24 43.90a57.24 60.28 72.65 -----z61.28 48.53 38.55 28.13 45.03a
197720.80a32.04 35.63 50.80 49.97 68.45 70.66 71.26 59.35 49.18 35.35 32.77 48.02
197832.37a33.73 44.16 45.77 52.32 62.36a71.11 68.75a58.35 51.74 35.30 24.63 48.38
197916.52a30.55 39.05 44.93a56.03 64.58 73.02 71.24 66.58 54.55 34.42 33.16 48.72
198028.32a37.31 39.61 50.67 55.56 60.84a72.55 67.17a61.23 50.79 37.68 31.06 49.40
198132.90 35.18 42.24 48.27 54.10 61.33 71.03 74.95 63.45 47.03 41.55 33.06 50.43
198223.44 25.00 38.31 42.98a53.10 64.88a69.30a73.35 60.43 48.27e34.96e30.34 47.03
198333.37a37.39 43.10 45.32 55.19 62.48a68.15 74.18a60.63 51.48 41.09b24.93a49.78
198423.02 27.64 39.58 45.12 53.21 59.97 72.56 73.58 58.43a46.88a37.28a20.65 46.49
198518.95 23.71 34.00 50.17 57.69 66.62 80.08s69.69j54.76g45.70i28.29f17.93b38.44e
198629.42 35.33d44.98g46.35d56.00b70.03 68.36b75.55a55.80b50.36c38.24k27.96e51.52b
198725.23c35.30e40.85a53.14b60.92 67.38d71.26j68.28m64.95i53.10j40.11l33.09o47.14f
198821.52k33.34j39.74h51.29i57.41i68.63d73.33k71.26h58.88j57.52k37.50g24.85 46.74j
198921.90b21.19d39.06 50.88 55.05b66.15 75.44 68.89 62.02a49.34 37.67 29.74b48.11
199032.22a29.67d42.05 52.82 53.33a64.96d73.65 71.95 67.97 49.34 37.78 19.94e49.64
199123.61 37.98 39.84 44.90 51.89 60.62a72.77 73.68a62.83 49.06 35.27 30.42 48.57
199231.74b39.52 47.15 51.72 61.35a67.74a68.92g72.58 60.96f54.34c33.80e25.68a48.56b
199322.20c27.88c38.73 45.17f61.30f58.92e63.12b67.95a62.03 52.10e33.32b32.31 45.86b
199433.13a31.02b44.27a51.24a59.53 66.50f75.90 75.87 66.74a48.79 30.30b28.81d49.60a
199531.86f39.42b39.52g47.17a54.65a61.55a71.78a69.60e63.09c48.90e41.25d35.03n55.27c
199631.12j30.67f42.70h49.69f53.77g64.98d74.98g72.22d-----z47.10p41.69i31.57j68.60j
199729.79g34.71k43.10k47.78e59.64i66.38e72.67g74.63d66.64a49.46e39.78a29.33a53.43e
199834.58e37.31d41.38e47.29d54.46d59.58e76.69e74.22f68.78g48.00g40.28c30.15e46.86c
199931.74j32.67a44.26b55.88b60.88a62.83f70.63a73.87a61.37 53.05c43.86b29.96e52.64b
200028.82i37.24f42.23a51.56c59.50h65.38e75.24d76.07h61.42e48.42m32.70h27.67g59.17g
200126.07p32.03l42.66f47.12f60.20f65.34e71.72a76.14c64.43b48.03a40.80b23.06f61.08f
200226.93i29.85a35.52i48.74e54.20h67.62e78.69g70.13e63.17i49.60e39.35f36.26b50.37f
200336.45c37.15h43.50j48.85 56.15 66.76e79.48 75.98 65.26a55.37 35.62 35.05 55.50b
200424.81g32.40 45.83b52.72e56.94e65.17d75.20d72.12f61.81a52.35a35.72l29.83m55.30d
200526.83g33.67a42.63 47.13d58.12c62.62d77.70f76.52d62.94f48.62a37.25d25.20c47.97c
200632.62b29.21b39.03b50.32h60.92g69.76g79.33b73.36f63.07b50.15 41.77h29.31d46.10e
200727.36f37.31d46.07h51.75h62.00 67.19a81.12b74.53 63.70 50.15 39.47a30.03a56.17c
200824.00 29.09a36.38c43.46c56.92a62.94d76.09b74.95a63.55a54.92 43.86b28.61h51.47a
200928.90 33.69a37.98b47.67 57.69b64.70 75.29 74.43a68.62 48.43a39.90 26.19 50.29
201033.81 37.77 42.98 46.52 50.77 62.33 72.15 72.22a64.67 55.98 39.60d33.64b51.04
201129.39c32.66 39.92 43.68 53.84 60.72 72.10 76.52 68.05 52.90 37.63 31.26 49.89
201231.73 33.19 41.85 51.17a55.82 64.03 77.98 76.16 66.10 50.47 42.40 34.50 52.12
201322.74 34.50 42.37 48.07a57.88c67.05 79.55 76.16 66.15 49.11 39.45 27.26 50.86
201431.76 36.57 43.37 48.20 58.47 65.33 78.39 74.24 66.18 55.58 37.90a36.12a52.68
201530.69 41.29 47.38a49.38 59.56 71.96b74.34 75.35 65.77 58.29 37.88a30.66 53.55
201631.95a38.97 44.65 54.62 57.42 68.08 73.58a72.68 61.95 53.30a44.12 24.21 52.13
201723.48h33.93a43.48a46.35 55.60a65.84a79.17b76.13 64.76a47.89 41.62 29.20k55.48b
Period of Record Statistics
MEAN26.42 31.85 39.43 48.06 56.41 64.31 73.84 72.62 62.54 50.57 37.85 29.13 49.21
S.D.5.77 5.09 3.90 3.39 3.10 3.15 2.96 2.62 3.14 2.92 3.24 4.23 1.67
SKEW-0.97 -0.40 -0.13 0.13 0.22 0.38 -0.21 -0.30 -0.41 0.11 -0.13 -0.60 0.61
MAX36.45 41.29 47.98 55.88 63.35 72.58 81.12 77.87 68.62 58.29 44.12 37.43 53.55
MIN2.24 17.21 29.19 39.98 49.97 58.85 63.12 65.66 54.70 43.63 30.30 17.33 46.29
YRS87 97 94 98 97 100 96 97 95 93 91 92 62