easeweather.com
Chilliwack
AbbotsfordAjaxAuroraBanffBarrieBoisbriandBouchervilleBramptonBrandonBrantfordBrossardBurlingtonBurnabyCalgaryCambridgeCharlottetownChatham
Chilliwack
CoquitlamCornwallDartmouthDeltaDorvalEdmontonFort McMurrayFrederictonGatineauGranbyGrande PrairieGreater SudburyGuelphHalifaxHamiltonKamloopsKanataKelownaKingstonKitchenerLangleyLavalLethbridgeLindsayLondonMarkhamMiltonMissionMississaugaMonctonMont-RoyalMontréalMoose JawNanaimoNepeanNew GlasgowNewmarketNiagara FallsNorfolk CountyNorth BattlefordNorth BayOakvilleOkanaganOrilliaOshawaOttawaPentictonPeterboroughPickeringPointe-ClairePrince AlbertPrince EdwardPrince GeorgeQuébecRed DeerReginaRichmond HillSaguenaySaint JohnSarniaSaskatoonSault Ste. MarieSherbrookeSt. CatharinesSt. John'sSurreySydneyThunder BayTimminsTorontoVancouverVaughanVictoriaWasaga BeachWaterlooWellandWest VancouverWhistlerWhitehorseWindsorWinnipegWoodstockYellowknife More Locations
Canada weather

Weather in Chilliwack for September 2026

Your guide to Chilliwack weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Chilliwack has been nearly identical to the historical average, with a temperature of 23.9 °C (showing only a slight deviation of 0.3 °C).

  • Expect cooler weather in the next days in Chilliwack with the forecast suggesting a temperature of 20.8 °C, lower than the historical average.

  • In general, the average temperature in Chilliwack at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.6 °C by the end of September.

    • Rain 🌧️

  • The climate of Chilliwack in September is notably wet, with an average of 14 rainy days, and a total of 132.5 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
16
Dry days
Average rainy days
14
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/10°
Temperatures
Average wind speed
7 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Chilliwack Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
25°
2
Cloudy
26°
3
Patchy rain possible
23°
4
Sunny
25°
5
Sunny
26°
6
Sunny
25°
7
Sunny
22°
8
Sunny
24°
9
Partly cloudy
22°
10
Partly cloudy
21°
11
Overcast
22°
12
Sunny
25°
13
Sunny
17°
14
Patchy rain possible
18°
15
Overcast
19°
16
Sunny
27°
17
Sunny
28°
18
Sunny
30°
19
Sunny
25°
20
Patchy rain possible
14°
21
Light rain shower
13°
22
Mist
15°
23
Sunny
19°
24
Sunny
19°
25
Moderate or heavy rain with thunder
15°
26
Light rain shower
13°
27
Light rain
14°
28
Overcast
15°
29
Patchy rain possible
15°
30
Sunny
18°

Temperatures trend during September in Chilliwack

See the weather trend as well as the moving average line

September weather in Chilliwack day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 25° /12° 0 mm 6
2 Sept. Cloudy
Cloudy
 26° /12° 2.4 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 23° /13° 0.8 mm 5
4 Sept. Sunny
Sunny
 25° /12° 0.3 mm 5
5 Sept. Sunny
Sunny
 26° /13° 2.4 mm 6
6 Sept. Sunny
Sunny
 25° /11° 0 mm 6
7 Sept. Sunny
Sunny
 22° /10° 6.6 mm 6
8 Sept. Sunny
Sunny
 24° /11° 0 mm 5
9 Sept. Partly cloudy
Partly cloudy
 22° /10° 0 mm 5
10 Sept. Partly cloudy
Partly cloudy
 21° /11° 0 mm 5
11 Sept. Overcast
Overcast
 22° /9° 0.2 mm 3.6
12 Sept. Sunny
Sunny
 25° /8° 0 mm 4.1
13 Sept. Sunny
Sunny
 17° /7° 0.7 mm 4.1
14 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.5 mm 3.1
15 Sept. Overcast
Overcast
 19° /9° 0.1 mm 5
16 Sept. Sunny
Sunny
 27° /9° 0 mm 7
17 Sept. Sunny
Sunny
 28° /12° 0 mm 7
18 Sept. Sunny
Sunny
 30° /12° 0 mm 7
19 Sept. Sunny
Sunny
 25° /13° 0 mm 6
20 Sept. Patchy rain possible
Patchy rain possible
 14° /10° 1.5 mm 3
21 Sept. Light rain shower
Light rain shower
 13° /8° 6 mm 3
22 Sept. Mist
Mist
 15° /7° 0.5 mm 5
23 Sept. Sunny
Sunny
 19° /5° 0 mm 5
24 Sept. Sunny
Sunny
 19° /6° 0 mm 5
25 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 15° /9° 30.9 mm 4
26 Sept. Light rain shower
Light rain shower
 13° /7° 16.9 mm 3
27 Sept. Light rain
Light rain
 14° /9° 11 mm 4
28 Sept. Overcast
Overcast
 15° /9° 4.4 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 28.9 mm 4
30 Sept. Sunny
Sunny
 18° /7° 1.1 mm 5
Next
Important Notice
Our weather forecast for Chilliwack in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Chilliwack forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Chilliwack in September - FAQ

What are the expected maximum and minimum temperatures in Chilliwack during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Chilliwack during September?
Significant rainfall exceeding 132.5 mm is expected in Chilliwack during September, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Chilliwack during September?
The average wind speed in Chilliwack during September is 7 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Chilliwack

Explore the daily rainfall trends and prepare for Chilliwacks September weather 💧
Typically, Chilliwack has 14 rainy days in September with a total of 132.5 mm of rainfall.

UV exposure in Chilliwack during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

More Chilliwack weather pages
You are here
Location coordinates Where is Chilliwack?

Get accurate weather forecasts for Chilliwack, located at latitude 49.166 and longitude -121.953. Stay updated with localized weather information tailored for Chilliwack.

Found a mistake?
We appreciate your attention to details. Tell us here.