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

Hamilton, Ontario

54°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Hamilton

Ontario

54°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Hamilton, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day 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 10-Day Radar MinuteCast®

Monthly

Air Quality Health & Activities

May

January February March April May June July August September October November December

2026

2025 2026 2027

10-Day

S
M
T
W
T
F
S
26
57°
38°
27
56°
34°
28
65°
45°
29
53°
39°
30
57°
35°
1
54°
32°
2
47°
33°
3
N/A
4
Breezy with some sun
68°
55°
5
Cooler with rain
64°
42°
6
Cloudy and cooler
51°
37°
7
Cloudy, showers around; cold
48°
35°
8
A couple of showers
49°
38°
9
Brief afternoon showers
53°
41°
10
Turning cloudy
56°
42°
11
A few afternoon showers
57°
40°
12
Partly sunny
58°
43°
13
Partly sunny
57°
46°
14
Rain
58°
46°
15
Clouds yielding to sun
59°
47°
16
Occasional rain
60°
46°
17
Cloudy with a few showers
70°
51°
18
Morning rain; mostly cloudy
69°
50°
19
Mostly cloudy
65°
48°
20
Brilliant sunshine
69°
52°
21
A shower and thunderstorm
68°
50°
22
A little afternoon rain
63°
43°
23
Windy; a bit of morning rain
60°
43°
24
A bit of afternoon rain
62°
44°
25
Partial sunshine
61°
45°
26
Occasional rain
63°
46°
27
Some sunshine
63°
44°
28
Sunny to partly cloudy
64°
44°
29
Increasing cloudiness
63°
45°
30
Cloudy
65°
49°
31
Rain
67°
51°
1
Mostly sunny
66°
50°
2
Clouds and sun
67°
51°
3
Times of sun and clouds
70°
55°
4
Turning cloudy
71°
52°
5
Brilliant sunshine
70°
56°
6
A thick cloud cover
76°
57°

Temperature Graph

°F
80° 70° 60° 50° 40° May
Today 1 2 *3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable

May Weather in Hamilton

Hamilton's May 2026 forecast shows daily high temperatures ranging from 48° to 76°, with overnight lows between 35° and 57°. The average high for May is 63° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Hamilton. See also: June | July | August.

Further Ahead

June 2026

July 2026

August 2026

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Turbulent temperatures, more freezes ahead for Midwest, Northeast

10 hours ago

Weather News

5 killed in small plane crash in Texas, authorities say

2 days ago

Weather News

Camp Mystic halts plans to reopen this summer

2 days ago

Weather Forecasts

High-altitude storm to bring gusty thunderstorms to California

10 hours ago

Severe Weather

After lull, dangerous storms to refire in central US starting Monday

10 hours ago

More Stories

Featured Stories

Astronomy

May's biggest astronomy events include shooting stars, rare Blue Moon

2 days ago

Recreation

Watch: Yellowstone hot spring erupts twice in 2 days

2 days ago

Severe Weather

First tornado in nearly 2 years confirmed in West Virginia

1 day ago

Astronomy

SpaceX rocket debris is on a collision course with the moon

3 days ago

Severe Weather

Texas police rescue mom from surging floodwater using jumper cables

3 days ago

World North America Canada Ontario Hamilton

Weather Near Hamilton:

  • 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 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 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
© 2026 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 | Data Sources

...

...

...