Gresham, United States — Weather in August 2026

Climate Overview

Gresham, United States in August has hot conditions, with highs reaching 29.3°C (85°F) and afternoons the warmest part of the day. Rain is rare, falling on about 2 days this month. Temperatures drop noticeably between day and night.

This month falls at the end of Summer.

Temperatures remain fairly steady throughout August, with daily highs around 30°C (86°F).

August sees fairly even rainfall, totalling about 11 mm across the month.

Expect around 12.6h of sunshine at the start of August, decreasing to 11.4h by the end.

The warmest days tend to fall around the 1th, averaging 30.6°C (87°F).

Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

29°C / 15°C

Feels Like

29°C / 15°C

Rain

2 days · 11 mm

Sunshine

11.9h / day

Humidity

59% — Moderate

Wind

11 km/h

Wind Direction

NW (305°)

Gusts

30 km/h

Daylight

14.1 h

Cloud Cover

35%

Clear Sky Days

12.4

UV Index

6.4 — High

Dew Point

14°C — Comfortable

Moon Phase

Waxing Crescent · 3%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:12

Daylight 14.1h

Sunset 20:19

What to Expect

Daytime temperatures around 29°C (85°F) are ideal for full-day outdoor exploration.

Rain is uncommon in this month, so most days stay dry from morning through evening.

2 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

2days (6 mm) Excellent

2days (11 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	8°C / 2°C	5°C / -2°C	19days (224 mm) Wet	4.4h Fair	86% Very Muggy	1.6 Low	Wet	View Details
February	8°C / 1°C	6°C / -2°C	18days (193 mm) Wet	5.5h Fair	85% Humid	2.3 Moderate	Wet	View Details
March	12°C / 3°C	9°C / -1°C	20days (174 mm) Wet	7.4h Good	83% Humid	3.7 Moderate	Wet	View Details
April	16°C / 5°C	14°C / 2°C	16days (138 mm) Wet	9.1h Good	77% Humid	5.4 High	Fair	View Details
May	20°C / 9°C	19°C / 7°C	11days (75 mm) Wet	10.8h Excellent	73% Muggy	6.1 High	Good	View Details
June best	24°C / 12°C	23°C / 11°C	9days (61 mm) Wet	12.1h Excellent	69% Muggy	6.7 High	Excellent	View Details
July best	28°C / 14°C	28°C / 14°C	2days (6 mm) Excellent	13.2h Excellent	60% Moderate	7.3 Very High	Excellent	View Details
August best	29°C / 15°C	29°C / 15°C	2days (11 mm) Excellent	11.9h Excellent	59% Moderate	6.4 High	Excellent	View Details
September best	25°C / 12°C	24°C / 12°C	8days (58 mm) Wet	9.9h Good	68% Muggy	5 Moderate	Excellent	View Details
October	17°C / 8°C	16°C / 6°C	14days (163 mm) Wet	7.2h Good	79% Humid	3.2 Moderate	Good	View Details
November	11°C / 5°C	9°C / 2°C	18days (218 mm) Wet	5.2h Fair	86% Very Muggy	1.9 Low	Wet	View Details
December	8°C / 2°C	5°C / -1°C	20days (258 mm) Wet	4h Fair	88% Very Muggy	1.2 Low	Wet	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

Packing List

Breathable clothingSunscreen (SPF 30+)Sun hatSunglassesSandals

Frequently Asked Questions

Expand all

Is August a good time to visit Gresham?

August is typically excellent for visiting Gresham, with average highs of 29°C (85°F) and around 2 rainy days. Gresham, United States in August has hot conditions, with highs reaching 29.3°C (85°F) and afternoons the warmest part o

Does it rain a lot in Gresham in August?

Gresham typically sees around 2 rainy days in August with 11 mm (0.4 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Gresham in August?

Evenings in Gresham during August are mild at 15°C (59°F). A light cardigan is usually enough.

What should I pack for Gresham in August?

With highs of 29°C (85°F) and lows of 15°C (59°F) in August, we recommend: Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. Comfortable walking shoes are essential.

Is August among the best months weather-wise in Gresham?

Yes, August offers some of the best weather conditions in Gresham with comfortable temperatures and lower chances of rain.

What is the UV index in Gresham in August?

The average UV index in Gresham during August is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

How many hours of daylight are there in Gresham in August?

Gresham gets approximately 14 hours of daylight per day in August, with around 12 hours of sunshine.

Does it snow in Gresham in August?

Snow is uncommon in Gresham during August based on 10-year climate averages.

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