Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™

Waterloo, Ontario

68°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Waterloo

Ontario

68°
No results found.
Try searching for a city, zip code or point of interest.
settings
Waterloo, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today Hourly

Daily

Radar MinuteCast® Monthly Air Quality Health & Activities
Heat Warning

August 10 - September 23

Sun 8/10

90° /64°
3%
Mostly sunny and hot
alerts

Heat Warning

12:55 AM Sunday - 9:00 AM Wednesday

RealFeel®94°

RealFeel Shade™88°

Max UV Index8 (Very High)

WindSSW 9 mph

Mon 8/11

88° /66°
25%
Mostly sunny and very warm
alerts

Heat Warning

12:55 AM Sunday - 9:00 AM Wednesday

RealFeel®93°

RealFeel Shade™86°

Max UV Index8 (Very High)

WindSSW 9 mph

Tue 8/12

85° /64°
46%
Remaining very warm and humid with some sun, then turning cloudy; a thunderstorm in spots in the afternoon
alerts

Heat Warning

12:55 AM Sunday - 9:00 AM Wednesday

RealFeel®90°

RealFeel Shade™85°

Max UV Index6 (High)

WindSW 10 mph

Wed 8/13

82° /58°
80%
Partial sunshine with a thunderstorm in spots; humid
alerts

Heat Warning

12:55 AM Sunday - 9:00 AM Wednesday

RealFeel®86°

RealFeel Shade™81°

Max UV Index8 (Very High)

WindWNW 13 mph

Thu 8/14

78° /58°
0%
Abundant sunshine, pleasant and less humid

RealFeel®82°

RealFeel Shade™75°

Max UV Index8 (Very High)

WindNNW 7 mph

Fri 8/15

82° /63°
1%
Plenty of sun

RealFeel®91°

RealFeel Shade™80°

Max UV Index8 (Very High)

WindNW 1 mph

Sat 8/16

83° /63°
4%
Sun and some clouds

RealFeel®85°

RealFeel Shade™82°

Max UV Index8 (Very High)

WindWSW 8 mph

Sun 8/17

82° /60°
55%
Partly sunny with a thunderstorm around

RealFeel®86°

RealFeel Shade™80°

Max UV Index7 (High)

WindSSW 6 mph

Mon 8/18

83° /59°
73%
Times of clouds and sun with a couple of thunderstorms, especially late in the day

RealFeel®84°

RealFeel Shade™80°

Max UV Index7 (High)

WindSW 9 mph

Tue 8/19

82° /64°
7%
Partly sunny

RealFeel®87°

RealFeel Shade™83°

Max UV Index7 (High)

WindW 4 mph

Wed 8/20

80° /61°
3%
Sun through high clouds

RealFeel®81°

RealFeel Shade™79°

Max UV Index4 (Moderate)

WindSW 5 mph

Thu 8/21

80° /60°
5%
Sun and areas of high clouds in the morning, then mostly cloudy in the afternoon

RealFeel®82°

RealFeel Shade™78°

Max UV Index6 (High)

WindS 5 mph

Fri 8/22

81° /54°
5%
Plenty of sunshine

RealFeel®83°

RealFeel Shade™79°

Max UV Index7 (High)

WindNNE 7 mph

Sat 8/23

73° /56°
20%
Mostly sunny

RealFeel®80°

RealFeel Shade™73°

Max UV Index7 (High)

WindWNW 2 mph

Sun 8/24

76° /58°
25%
Some sun

RealFeel®79°

RealFeel Shade™76°

Max UV Index6 (High)

WindSW 2 mph

Mon 8/25

78° /59°
25%
Clouds to start, then sunshine returns

RealFeel®83°

RealFeel Shade™76°

Max UV Index6 (High)

WindWSW 2 mph

Tue 8/26

77° /58°
39%
Humid with intervals of clouds and sunshine; a thunderstorm in spots in the afternoon

RealFeel®84°

RealFeel Shade™79°

Max UV Index6 (High)

WindSSW 7 mph

Wed 8/27

78° /59°
39%
Rather cloudy and humid with a thunderstorm in spots

RealFeel®78°

RealFeel Shade™78°

Max UV Index2 (Low)

WindWSW 8 mph

Thu 8/28

75° /57°
25%
Decreasing clouds and less humid

RealFeel®76°

RealFeel Shade™72°

Max UV Index7 (High)

WindNNE 7 mph

Fri 8/29

72° /57°
20%
Plenty of sunshine

RealFeel®77°

RealFeel Shade™70°

Max UV Index6 (High)

WindENE 5 mph

Sat 8/30

73° /56°
25%
Times of clouds and sun

RealFeel®75°

RealFeel Shade™71°

Max UV Index6 (High)

WindESE 6 mph

Sun 8/31

77° /58°
41%
Clouds and sunshine with a shower in the area; humid

RealFeel®81°

RealFeel Shade™77°

Max UV Index6 (High)

WindESE 6 mph

Mon 9/1

76° /58°
57%
A touch of rain in the morning; otherwise, cloudy and humid

RealFeel®79°

RealFeel Shade™79°

Max UV Index1 (Low)

WindNE 5 mph

Tue 9/2

77° /56°
25%
Less humid with clouds and sun

RealFeel®77°

RealFeel Shade™75°

Max UV Index6 (High)

WindNNE 8 mph

Wed 9/3

71° /56°
25%
Turning cloudy

RealFeel®70°

RealFeel Shade™69°

Max UV Index4 (Moderate)

WindSE 6 mph

Thu 9/4

75° /57°
55%
A bit of rain in the morning; otherwise, mostly cloudy and humid

RealFeel®76°

RealFeel Shade™75°

Max UV Index1 (Low)

WindW 6 mph

Fri 9/5

75° /56°
25%
Considerable cloudiness

RealFeel®75°

RealFeel Shade™75°

Max UV Index2 (Low)

WindNNE 5 mph

Sat 9/6

74° /56°
5%
Brilliant sunshine

RealFeel®75°

RealFeel Shade™71°

Max UV Index6 (High)

WindNNE 7 mph

Sun 9/7

75° /55°
10%
Mostly sunny

RealFeel®79°

RealFeel Shade™73°

Max UV Index6 (High)

WindNE 5 mph

Mon 9/8

75° /56°
25%
Mostly cloudy

RealFeel®74°

RealFeel Shade™74°

Max UV Index2 (Low)

WindN 4 mph

Tue 9/9

74° /56°
41%
Times of clouds and sun with a shower in the area

RealFeel®74°

RealFeel Shade™74°

Max UV Index3 (Moderate)

WindWNW 4 mph

Wed 9/10

73° /55°
60%
Partly sunny with a thunderstorm in the afternoon

RealFeel®75°

RealFeel Shade™73°

Max UV Index5 (Moderate)

WindSW 8 mph

Thu 9/11

74° /54°
20%
Partly sunny and less humid

RealFeel®74°

RealFeel Shade™71°

Max UV Index5 (Moderate)

WindNNW 8 mph

Fri 9/12

75° /51°
57%
Partly sunny; a thunderstorm in parts of the area in the morning followed by a couple of showers in the afternoon

RealFeel®75°

RealFeel Shade™73°

Max UV Index5 (Moderate)

WindWNW 9 mph

Sat 9/13

71° /52°
1%
Mostly sunny

RealFeel®74°

RealFeel Shade™69°

Max UV Index5 (Moderate)

WindNNE 5 mph

Sun 9/14

66° /55°
57%
A couple of morning showers; otherwise, rather cloudy

RealFeel®65°

RealFeel Shade™65°

Max UV Index2 (Low)

WindENE 6 mph

Mon 9/15

66° /39°
56%
Occasional rain in the morning; otherwise, considerable cloudiness

RealFeel®63°

RealFeel Shade™62°

Max UV Index1 (Low)

WindWNW 16 mph

Tue 9/16

60° /42°
1%
Intervals of clouds and sunshine

RealFeel®59°

RealFeel Shade™59°

Max UV Index2 (Low)

WindNW 12 mph

Wed 9/17

62° /45°
1%
Sunny much of the time

RealFeel®62°

RealFeel Shade™61°

Max UV Index5 (Moderate)

WindSW 9 mph

Thu 9/18

63° /46°
13%
Mostly cloudy

RealFeel®67°

RealFeel Shade™66°

Max UV Index3 (Moderate)

WindW 2 mph

Fri 9/19

70° /44°
65%
Partly sunny with a couple of showers and a thunderstorm in the afternoon

RealFeel®68°

RealFeel Shade™67°

Max UV Index5 (Moderate)

WindS 13 mph

Sat 9/20

62° /51°
2%
Partly sunny

RealFeel®62°

RealFeel Shade™62°

Max UV Index5 (Moderate)

WindW 9 mph

Sun 9/21

66° /40°
59%
Periods of rain

RealFeel®65°

RealFeel Shade™61°

Max UV Index5 (Moderate)

WindSSW 9 mph

Mon 9/22

73° /41°
2%
Mostly sunny

RealFeel®73°

RealFeel Shade™71°

Max UV Index5 (Moderate)

WindSSW 8 mph

Tue 9/23

64° /51°
0%
Clouds to start, then sunshine returns

RealFeel®62°

RealFeel Shade™62°

Max UV Index5 (Moderate)

WindNNE 12 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Atlantic hurricane potential, US risk to increase around mid-August

7 hours ago

Weather Forecasts

Fall forecast 2025: Warmth to fuel fires, storms before chill hits US

3 days ago

Weather News

Canyon Fire joins California’s escalating wildfire crisis

1 day ago

Astronomy

Perseid meteor shower peaks Tuesday, but the moon may steal the show

1 day ago

Weather News

Rare winter rescue from brutal Antarctica conditions tests flight crew

2 days ago

More Stories

Featured Stories

Weather News

French firefighters battle blaze that scorched area bigger than Paris

1 day ago

Weather News

Read the Coast Guard report on the implosion of the Titan submersible

3 days ago

Weather News

Blue whales go quiet off California after marine heat wave

2 days ago

Astronomy

Days are getting shorter: How much daylight disappears in August

2 days ago

Weather News

Florida firefighters rescue kitten stuck in engine compartment

3 days ago

World North America Canada Ontario Waterloo

Weather Near Waterloo:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2025 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information

...

...

...