Climate averages 1991–2020
Gresham weather
in October.
A mild, wet month: the 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Gresham: daytime highs average 16.0°C and nights cool to about 7.1°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 147 mm of rain on roughly 13 days, which makes October a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 59 min on an average October day.
The nearest other city in this atlas is Portland (19 km away). In October its highs average 17.0°C, 1.0°C warmer than Gresham, with 106 mm of rain.
Among the 498 cities listed in the United States, Gresham ranks joint 411th of 498 for the warmest October highs and 496th of 498 for the driest October (rainfall, lowest first). The mean October high of those 498 cities is 21.4°C; Gresham is 5.4°C cooler than that mean.
From October to November, average highs fall by 5.8°C to 10.2°C, and monthly rainfall rises from 147 mm to 230 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Gresham climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.5°C1.1°C | 1.1°C | 220 | 18.3 | 9.19 h |
| February | 9.1°C1.2°C | 1.2°C | 167 | 15.7 | 10.310 h |
| March | 11.5°C2.4°C | 2.4°C | 178 | 18.2 | 11.912 h |
| April | 14.0°C4.5°C | 4.5°C | 142 | 16.6 | 13.513 h |
| May | 17.8°C7.9°C | 7.9°C | 89 | 11.6 | 14.915 h |
| June | 20.5°C10.6°C | 10.6°C | 58 | 9.0 | 15.616 h |
| July | 25.5°C13.6°C | 13.6°C | 14 | 2.9 | 15.315 h |
| August | 26.1°C13.9°C | 13.9°C | 20 | 2.9 | 14.114 h |
| September | 22.8°C11.3°C | 11.3°C | 58 | 6.4 | 12.613 h |
| October, selected | 16.0°C7.1°C | 7.1°C | 147 | 12.9 | 11.011 h |
| November | 10.2°C3.4°C | 3.4°C | 230 | 18.0 | 9.610 h |
| December | 6.8°C1.0°C | 1.0°C | 244 | 18.5 | 8.89 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Portland in OctoberUnited States · 19 kmHigh 17.0°C · Low 8.1°C · 106 mm rain
- Vancouver, United States in OctoberUnited States · 24 kmHigh 16.5°C · Low 7.9°C · 143 mm rain
- Beaverton in OctoberUnited States · 29 kmHigh 16.6°C · Low 7.9°C · 106 mm rain
- Hillsboro in OctoberUnited States · 44 kmHigh 16.7°C · Low 8.0°C · 107 mm rain
- Salem, United States in OctoberUnited States · 78 kmHigh 17.4°C · Low 7.9°C · 87 mm rain
- Eugene in OctoberUnited States · 169 kmHigh 17.4°C · Low 7.3°C · 107 mm rain
- Bend in OctoberUnited States · 183 kmHigh 15.0°C · Low 2.9°C · 37 mm rain
- Yakima in OctoberUnited States · 193 kmHigh 16.4°C · Low 5.1°C · 30 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Gresham) is explained once on the Gresham year overview and on the Sources, method and limits page.