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 62.3 68.0| 5.6 50.2| 3.6 85.4| 7.8 35.3| 4.2 14 39.2|WY 99.9|OR 0 3 20250902 62.2 69.8| 7.6 51.0| 4.7 87.9| 10.2 36.9| 5.5 14 39.7|WY 102.2|OR 0 2 20250903 62.0 69.1| 7.1 53.2| 7.0 86.6| 9.0 33.4| 2.0 14 39.4|WY 100.2|WA 0 1 20250904 61.7 66.5| 4.8 53.0| 7.0 80.6| 3.3 27.6| -3.7 14 36.9|MT 97.2|OR 0 0 20250905 61.4 64.3| 2.9 50.1| 4.3 79.4| 2.5 29.3| -1.8 14 27.1|MT 96.6|OR 0 0 20250906 61.1 63.6| 2.5 48.9| 3.3 77.9| 1.4 29.0| -1.9 14 28.8|MT 91.0|OR 1 0 20250907 60.6 63.9| 3.3 50.1| 4.8 77.7| 1.7 27.6| -3.1 14 40.1|MT 87.8|OR 0 0 20250908 60.2 63.1| 2.9 48.4| 3.5 77.0| 1.6 28.6| -1.9 14 35.6|MT 87.3|OR 0 0 20250909 59.7 61.6| 1.9 48.6| 4.1 76.0| 1.1 27.4| -3.0 14 34.9|WY 84.2|UT 0 0 20250910 59.3 60.7| 1.4 49.2| 5.1 74.0| -0.4 24.9| -5.6 14 38.1|WY 85.1|WA 0 0 20250911 58.9 58.8| -0.1 48.8| 5.0 70.1| -4.0 21.3| -9.1 14 39.4|MT 84.0|WA 0 0 20250912 58.5 58.8| 0.3 45.0| 1.5 73.4| -0.3 28.3| -1.9 14 32.4|MT 83.7|OR 0 0 20250913 58.1 59.8| 1.7 44.9| 1.6 75.7| 2.6 30.8| 1.0 14 34.2|MT 87.6|OR 0 0 20250914 57.7 57.8| 0.1 44.7| 1.5 70.0| -2.5 25.3| -4.0 14 33.6|WY 78.3|UT 0 0 20250915 57.3 55.6| -1.7 44.0| 1.0 67.8| -4.0 23.7| -5.0 14 34.2|OR 75.4|OR 0 0 20250916 56.8 58.5| 1.7 42.9| -0.0 76.5| 5.5 33.6| 5.5 14 30.0|WY 90.7|OR 0 0 20250917 56.3 60.0| 3.7 44.0| 1.3 77.4| 7.2 33.5| 5.9 14 31.3|MT 90.5|OR 0 1 20250918 55.8 60.5| 4.7 43.9| 1.5 77.8| 8.3 33.9| 6.8 14 31.3|WY 89.6|OR 0 1 20250919 55.2 61.2| 6.0 45.4| 3.5 78.8| 10.0 33.5| 6.6 14 32.5|WY 89.8|OR 0 0 20250920 54.8 62.2| 7.4 46.1| 4.6 77.9| 9.6 31.9| 5.0 14 31.6|WY 89.4|OR 0 0 20250921 54.5 59.2| 4.7 45.6| 4.4 71.9| 3.7 26.2| -0.8 14 33.3|WY 80.8|MT 0 0 20250922 54.6 53.4| -1.2 39.8| -1.3 67.2| -1.2 27.3| 0.0 14 28.8|WA 77.2|OR 0 0 20250923 55.0 56.8| 1.8 39.9| -1.3 76.0| 7.0 36.0| 8.2 13 25.7|MT 88.0|OR 0 2 20250924 55.4 60.0| 4.6 41.1| -0.2 80.0| 10.2 38.9| 10.4 13 27.9|MT 93.2|OR 0 0 20250925 55.7 60.2| 4.5 41.3| 0.0 78.7| 8.4 37.4| 8.4 13 28.6|MT 87.6|OR 0 0 20250926 55.7 57.2| 1.5 43.0| 1.7 70.5| 0.1 27.6| -1.6 13 28.9|WA 78.6|UT 0 0 20250927 55.4 58.8| 3.4 42.2| 1.2 77.1| 7.1 34.8| 5.8 14 30.0|MT 88.2|OR 0 0 20250928 54.7 59.4| 4.7 43.6| 3.0 76.1| 7.0 32.5| 4.0 15 31.5|MT 89.6|OR 0 0 20250929 53.8 58.7| 4.9 45.1| 4.9 71.3| 3.4 26.2| -1.5 14 33.4|MT 81.0|MT 0 0 20250930 52.8 54.2| 1.4 45.1| 5.5 64.9| -1.5 19.8| -7.0 14 28.4|OR 72.0|ID 0 0 ----------------------------------------------------------------------------------------------------- 202509 57.6 60.7| 3.1 46.0| 2.9 76.1| 3.8 30.1| 0.9 13.9 25.7|MT 102.2|OR 1 10 Clim => 22-year climatology for 2005-2026 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