Ripon, United States — Weather in September 2026

Climate Overview

Ripon, United States in September has hot conditions, with highs reaching 32.2°C (90°F) and afternoons the warmest part of the day. Rain is rare, falling on about 1 days this month. Temperatures drop noticeably between day and night.

This month falls at the beginning of Autumn. Temperatures are at their seasonal peak.

Daily highs in September gradually drop from around 35°C (94°F) at the start to 31°C (88°F) by month's end.

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

Expect around 11.9h of sunshine at the start of September, decreasing to 10.9h by the end.

The warmest days tend to fall around the 6th, averaging 35.2°C (95°F).

Compared to August, this month is about 3°C cooler with 1 more rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

32°C / 17°C

Feels Like

31°C / 16°C

Rain

1 days · 4 mm

Sunshine

11.4h / day

Humidity

48% — Comfortable

Wind

14 km/h

Wind Direction

NW (326°)

Gusts

31 km/h

Daylight

12.4 h

Cloud Cover

14%

Clear Sky Days

22.4

UV Index

6.4 — High

Dew Point

13°C — Comfortable

Moon Phase

Waxing Crescent · 11%

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 06:48

Daylight 12.4h

Sunset 19:15

What to Expect

With midday temperatures reaching 32°C (90°F), schedule outdoor activities for early morning or late afternoon.

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

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

Compare Months

3days (17 mm) Excellent

0days (1 mm) Excellent

0days (0 mm) Excellent

0days (1 mm) Excellent

1days (4 mm) Excellent

3days (26 mm) Excellent

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	15°C / 6°C	13°C / 3°C	9days (108 mm) Wet	6.9h Fair	79% Humid	2.9 Moderate	Fair	View Details
February	17°C / 6°C	15°C / 3°C	7days (75 mm) Good	8.5h Good	70% Muggy	4 Moderate	Fair	View Details
March	19°C / 8°C	17°C / 5°C	11days (91 mm) Wet	9.4h Good	69% Muggy	5.4 High	Good	View Details
April best	24°C / 10°C	22°C / 8°C	4days (31 mm) Good	11h Excellent	59% Moderate	6.8 High	Excellent	View Details
May best	28°C / 13°C	27°C / 12°C	3days (17 mm) Excellent	12.7h Excellent	48% Moderate	7.8 Very High	Excellent	View Details
June best	34°C / 16°C	33°C / 15°C	0days (1 mm) Excellent	13.6h Excellent	40% Comfortable	8.1 Very High	Excellent	View Details
July	36°C / 18°C	36°C / 17°C	0days (0 mm) Excellent	13.5h Excellent	41% Moderate	8.2 Very High	Good	View Details
August	35°C / 18°C	35°C / 18°C	0days (1 mm) Excellent	12.5h Excellent	44% Moderate	7.6 Very High	Good	View Details
September best	32°C / 17°C	31°C / 16°C	1days (4 mm) Excellent	11.4h Excellent	48% Moderate	6.4 High	Excellent	View Details
October best	27°C / 13°C	25°C / 12°C	3days (26 mm) Excellent	9.8h Good	51% Moderate	5 Moderate	Excellent	View Details
November	19°C / 9°C	17°C / 6°C	5days (51 mm) Good	8.1h Good	66% Muggy	3.5 Moderate	Good	View Details
December	14°C / 6°C	13°C / 3°C	9days (96 mm) Wet	6.8h Fair	77% Humid	2.7 Moderate	Fair	View Details

What to Wear

Light, breathable fabrics like cotton and linen are essential. Opt for loose-fitting clothing in light colors to stay cool.

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 September a good time to visit Ripon?

September is typically excellent for visiting Ripon, with average highs of 32°C (90°F) and around 1 rainy days. Ripon, United States in September has hot conditions, with highs reaching 32.2°C (90°F) and afternoons the warmest part

Does it rain a lot in Ripon in September?

Ripon typically sees around 1 rainy days in September with 4 mm (0.2 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Ripon in September?

Evenings in Ripon during September are mild at 17°C (62°F). A light cardigan is usually enough.

What should I pack for Ripon in September?

With highs of 32°C (90°F) and lows of 17°C (62°F) in September, we recommend: Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses, Sandals. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Ripon?

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

What is the UV index in Ripon in September?

The average UV index in Ripon during September 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 Ripon in September?

Ripon gets approximately 12 hours of daylight per day in September, with around 11 hours of sunshine.

Does it snow in Ripon in September?

Snow is uncommon in Ripon during September based on 10-year climate averages.

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