Portland Airport Rainfall Forecast

Today 21 May
15%< 1mm
Fri 22 May
5%< 1mm
Sat 23 May
10%< 1mm
Sun 24 May
80%1–5mm
Mon 25 May
80%5–10mm
Tue 26 May
65%1–5mm
Wed 27 May
65%1–5mm

Portland Airport Rainfall Statistics View More

May Rainfall

Portland Airport (0km)

Total Rainfall 2026
194mm
Daily Average 2026
1.4mm
Wettest Day 10 April, 2026
18.8mm
Wet Days 2026
61/141 (43%)
Total Rainfall April
66.2mm
Daily Average April
2.2mm
Wettest Day 10 April, 2026
18.8mm
Wet Days April
16/30 (53%)
Total Rainfall May
45.4mm
Daily Average May
2.3mm
Wettest Day 5 May, 2026
10.2mm
Wet Days May
15/21 (71%)

Climate (2010–Present)

Portland Airport (0km)

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Annual Average 2021–2025
811mm
Monthly Average 2021–2026
66.6mm
Daily Average 2021–2026
2.2mm
Wettest Day 1 December, 2024
58.8mm

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