Williston, United States — Weather in August 2026

Climate Overview

Williston, United States in August has hot conditions, with highs reaching 28.7°C (84°F) and afternoons the warmest part of the day. Temperatures drop noticeably between day and night.

This month falls at the end of Summer.

Daily highs in August gradually drop from around 30°C (85°F) at the start to 28°C (82°F) by month's end.

Rainfall is heaviest during the middle of the month, while the last third tends to be drier.

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 30.4°C (87°F).

Compared to July, this month is about 1°C cooler with 2 fewer rainy days. Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

29°C / 16°C

Feels Like

28°C / 15°C

Rain

6 days · 41 mm

Sunshine

11.8h / day

Humidity

57% — Moderate

Wind

22 km/h

Wind Direction

SE (134°)

Gusts

39 km/h

Daylight

14.2 h

Cloud Cover

40%

Clear Sky Days

8.8

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 06:50

Daylight 14.3h

Sunset 21:10

What to Expect

Daytime temperatures around 29°C (84°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

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

Compare Months

3days (10 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-3°C / -12°C	-9°C / -18°C	3days (10 mm) Excellent	5.8h Fair	76% Humid	2.1 Moderate	Poor	View Details
February	-2°C / -13°C	-8°C / -18°C	4days (12 mm) Good	7.4h Good	68% Muggy	3.2 Moderate	Poor	View Details
March	5°C / -6°C	1°C / -11°C	5days (20 mm) Good	8.7h Good	67% Muggy	4.2 Moderate	Poor	View Details
April	12°C / 0°C	8°C / -5°C	6days (41 mm) Good	10h Excellent	60% Moderate	5.3 High	Poor	View Details
May	20°C / 8°C	18°C / 4°C	9days (70 mm) Wet	11.4h Excellent	57% Moderate	6.2 High	Good	View Details
June best	26°C / 14°C	25°C / 12°C	8days (58 mm) Wet	12.7h Excellent	57% Moderate	7 High	Excellent	View Details
July best	29°C / 17°C	29°C / 16°C	8days (56 mm) Wet	13.3h Excellent	58% Moderate	7 High	Excellent	View Details
August best	29°C / 16°C	28°C / 15°C	6days (41 mm) Good	11.8h Excellent	57% Moderate	6.4 High	Excellent	View Details
September best	24°C / 12°C	21°C / 9°C	6days (49 mm) Good	9.5h Good	57% Moderate	5.2 High	Excellent	View Details
October	14°C / 4°C	10°C / 0°C	5days (34 mm) Good	7.4h Good	62% Muggy	3.4 Moderate	Fair	View Details
November	5°C / -3°C	0°C / -8°C	5days (19 mm) Good	5.8h Fair	70% Muggy	2.1 Moderate	Poor	View Details
December	-2°C / -11°C	-7°C / -16°C	6days (21 mm) Good	5.2h Fair	75% Muggy	1.7 Low	Poor	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.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is August a good time to visit Williston?

August is typically excellent for visiting Williston, with average highs of 29°C (84°F) and around 6 rainy days. Williston, United States in August has hot conditions, with highs reaching 28.7°C (84°F) and afternoons the warmest part

Does it rain a lot in Williston in August?

Williston typically sees around 6 rainy days in August with 41 mm (1.6 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Williston in August?

Evenings in Williston during August are mild at 16°C (61°F). A light cardigan is usually enough.

What should I pack for Williston in August?

With highs of 29°C (84°F) and lows of 16°C (61°F) in August, we recommend: Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. Comfortable walking shoes are essential.

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

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

What is the UV index in Williston in August?

The average UV index in Williston 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 Williston in August?

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

Does it snow in Williston in August?

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

Last updated: