Weather history · Portland, US

Explore the daily humidity history for Portland.

Humidity in Portland from 1 Jul 2026 to 28 Oct 2026, based on completed daily observations.

Daily mean relative humidity 9682685339 1 Jul21 Jul10 Aug30 Aug18 Sept8 Oct28 Oct % 3 Jul 2026: 66.5 %4 Jul 2026: 64.9 %5 Jul 2026: 61 %6 Jul 2026: 54.9 %7 Jul 2026: 60.5 %8 Jul 2026: 63.5 %9 Jul 2026: 53.1 %10 Jul 2026: 58.4 %11 Jul 2026: 63.5 %12 Jul 2026: 57.3 %13 Jul 2026: 49.3 %14 Jul 2026: 48.9 %15 Jul 2026: 53.3 %16 Jul 2026: 71.1 %17 Jul 2026: 64.8 %18 Jul 2026: 65.2 %19 Jul 2026: 62.8 %20 Jul 2026: 60.5 %21 Jul 2026: 50.7 %22 Jul 2026: 56.5 %23 Jul 2026: 69.5 %24 Jul 2026: 66.8 %25 Jul 2026: 66.7 %26 Jul 2026: 65.3 %27 Jul 2026: 60.4 %28 Jul 2026: 63.4 %29 Jul 2026: 61.1 %30 Jul 2026: 57.9 %31 Jul 2026: 52.9 %1 Aug 2026: 64.5 %2 Aug 2026: 61.5 %3 Aug 2026: 55 %4 Aug 2026: 43.6 %5 Aug 2026: 47.3 %6 Aug 2026: 51.7 %7 Aug 2026: 55.9 %8 Aug 2026: 51.3 %9 Aug 2026: 56.5 %10 Aug 2026: 64.2 %11 Aug 2026: 64.5 %12 Aug 2026: 70.3 %13 Aug 2026: 70.7 %14 Aug 2026: 71.1 %15 Aug 2026: 75.5 %16 Aug 2026: 66.7 %17 Aug 2026: 68.3 %18 Aug 2026: 65.9 %19 Aug 2026: 63 %20 Aug 2026: 60 %21 Aug 2026: 69.9 %22 Aug 2026: 71.9 %23 Aug 2026: 66 %24 Aug 2026: 59 %25 Aug 2026: 59.3 %26 Aug 2026: 67.6 %27 Aug 2026: 62.5 %28 Aug 2026: 66.1 %29 Aug 2026: 62.6 %30 Aug 2026: 67.5 %31 Aug 2026: 61.5 %1 Sept 2026: 75.4 %2 Sept 2026: 84.6 %3 Sept 2026: 86 %4 Sept 2026: 84.3 %5 Sept 2026: 78 %6 Sept 2026: 87.1 %7 Sept 2026: 77 %8 Sept 2026: 71.3 %9 Sept 2026: 62.9 %10 Sept 2026: 68.3 %11 Sept 2026: 70 %12 Sept 2026: 76 %13 Sept 2026: 86.6 %14 Sept 2026: 76.9 %15 Sept 2026: 77.9 %16 Sept 2026: 70.5 %17 Sept 2026: 62 %18 Sept 2026: 77.2 %19 Sept 2026: 83.3 %20 Sept 2026: 79.7 %21 Sept 2026: 79.8 %22 Sept 2026: 74 %23 Sept 2026: 73.8 %24 Sept 2026: 75.8 %25 Sept 2026: 82.4 %26 Sept 2026: 76 %27 Sept 2026: 58.3 %28 Sept 2026: 66.6 %29 Sept 2026: 75.3 %30 Sept 2026: 74.8 %1 Oct 2026: 69.8 %2 Oct 2026: 73.3 %3 Oct 2026: 74.5 %4 Oct 2026: 71.1 %5 Oct 2026: 79.1 %6 Oct 2026: 80.6 %7 Oct 2026: 75.6 %8 Oct 2026: 71.8 %9 Oct 2026: 79.3 %10 Oct 2026: 77.3 %11 Oct 2026: 77.1 %12 Oct 2026: 74.3 %13 Oct 2026: 73.3 %14 Oct 2026: 74.5 %15 Oct 2026: 61.4 %16 Oct 2026: 47.7 %17 Oct 2026: 80 %18 Oct 2026: 74.6 %19 Oct 2026: 72.8 %20 Oct 2026: 62.8 %21 Oct 2026: 61.1 %22 Oct 2026: 75 %23 Oct 2026: 77.4 %24 Oct 2026: 81.8 %25 Oct 2026: 89.3 %26 Oct 2026: 91.8 %27 Oct 2026: 87.5 %28 Oct 2026: 86.5 %