Pacific Northwest Temperature Monitor - 15 CRN sites - September 2025 ----------------------------------------------------------------------------------------------------- TAverage(deg F) TMinimum TMaximum TRange # of Lowest Highest # of Date Clim Obs Dep Obs Dep Obs Dep Obs Dep Sites Tminimum Tmaximum Rlos Rhis ----------------------------------------------------------------------------------------------------- 20250901 62.0 67.9| 5.9 50.1| 3.8 85.5| 8.2 35.3| 4.4 14 39.2|WY 99.9|OR 0 3 20250902 61.9 69.8| 7.9 51.0| 4.9 87.9| 10.6 36.8| 5.6 14 39.7|WY 102.2|OR 0 3 20250903 61.8 69.2| 7.4 53.2| 7.3 86.6| 9.3 33.4| 2.0 14 39.4|WY 100.2|WA 0 1 20250904 61.5 66.6| 5.1 53.1| 7.3 80.7| 3.6 27.6| -3.7 14 36.9|MT 97.2|OR 0 1 20250905 61.2 64.3| 3.1 50.2| 4.6 79.5| 2.7 29.3| -1.9 14 27.1|MT 96.6|OR 0 0 20250906 60.9 63.5| 2.6 48.9| 3.5 77.9| 1.5 29.0| -2.0 14 28.8|MT 91.0|OR 1 0 20250907 60.5 63.9| 3.4 50.2| 5.1 77.7| 1.8 27.6| -3.2 14 40.1|MT 87.8|OR 0 0 20250908 60.1 63.1| 3.0 48.4| 3.7 77.1| 1.7 28.7| -2.0 14 35.6|MT 87.3|OR 0 0 20250909 59.6 61.6| 2.0 48.6| 4.3 76.0| 1.1 27.4| -3.2 14 34.9|WY 84.2|UT 0 0 20250910 59.2 60.6| 1.4 49.2| 5.3 74.0| -0.5 24.9| -5.8 14 38.1|WY 85.1|WA 0 0 20250911 58.8 58.7| -0.1 48.7| 5.2 70.1| -4.1 21.3| -9.3 14 39.4|MT 84.0|WA 0 0 20250912 58.5 58.8| 0.3 45.1| 1.7 73.4| -0.4 28.3| -2.1 14 32.4|MT 83.7|OR 0 0 20250913 58.1 59.8| 1.7 44.9| 1.7 75.7| 2.5 30.9| 0.9 14 34.2|MT 87.6|OR 0 0 20250914 57.7 57.8| 0.1 44.6| 1.6 70.0| -2.5 25.4| -4.0 14 33.6|WY 78.3|UT 0 0 20250915 57.2 55.6| -1.6 44.1| 1.1 67.8| -3.9 23.7| -5.0 14 34.2|OR 75.4|OR 0 0 20250916 56.7 58.5| 1.8 42.9| 0.1 76.5| 5.7 33.6| 5.6 14 30.0|WY 90.7|OR 0 3 20250917 56.2 60.1| 3.9 44.0| 1.4 77.4| 7.5 33.5| 6.2 14 31.3|MT 90.5|OR 0 1 20250918 55.6 60.5| 4.9 43.8| 1.6 77.8| 8.7 34.0| 7.1 14 31.3|WY 89.6|OR 0 1 20250919 55.0 61.3| 6.3 45.4| 3.6 78.8| 10.4 33.5| 6.8 14 32.5|WY 89.8|OR 0 1 20250920 54.5 62.2| 7.7 46.1| 4.8 78.0| 10.0 31.9| 5.2 14 31.6|WY 89.4|OR 0 1 20250921 54.3 59.2| 4.9 45.5| 4.5 71.8| 3.9 26.2| -0.6 14 33.3|WY 80.8|MT 0 1 20250922 54.4 53.4| -1.0 39.8| -1.2 67.2| -0.9 27.4| 0.3 14 28.8|WA 77.2|OR 0 0 20250923 54.8 56.8| 2.0 40.0| -1.2 76.0| 7.2 36.1| 8.5 13 25.7|MT 88.0|OR 0 2 20250924 55.3 60.0| 4.7 41.0| -0.3 80.0| 10.5 38.9| 10.7 13 27.9|MT 93.2|OR 0 1 20250925 55.6 60.2| 4.6 41.3| 0.0 78.6| 8.6 37.3| 8.6 13 28.6|MT 87.6|OR 0 0 20250926 55.6 57.2| 1.6 42.9| 1.7 70.5| 0.3 27.6| -1.4 13 28.9|WA 78.6|UT 0 0 20250927 55.2 58.7| 3.5 42.2| 1.3 77.1| 7.3 34.9| 6.0 14 30.0|MT 88.2|OR 0 0 20250928 54.5 59.5| 5.0 43.5| 3.0 76.4| 7.4 32.9| 4.4 14 31.5|MT 89.6|OR 0 0 20250929 53.6 58.9| 5.3 45.3| 5.3 71.7| 4.0 26.5| -1.3 13 33.4|MT 81.0|MT 0 1 20250930 52.7 54.4| 1.7 45.7| 6.3 65.0| -1.3 19.5| -7.5 13 28.4|OR 72.0|ID 0 0 ----------------------------------------------------------------------------------------------------- 202509 57.4 60.7| 3.3 46.0| 3.1 76.1| 4.0 30.1| 1.0 13.8 25.7|MT 102.2|OR 1 20 Clim => 21-year climatology for 2005-2025 Obs => Daily Observation Dep => Departure from climatology TAverage => Average over all 288 5-min observations each day # of Rlos => Number of record low minimum temperatures, expected value ~ 0.8 each day # of Rhis => Number of record high maximum temperatures, expected value ~ 0.8 each day