Live Weather & Forecast

Weather in Saint Jacobs

Ontario, Canada · Real-time conditions & 3-day outlook

Flag of Canada
Overcast
14°C
Feels like 14°C
57°F / Feels 57°F
Overcast
Saint Jacobs, Ontario
🌙 Nighttime
Updated: 2026-04-25 01:30
💧
Humidity
93%
💨
Wind
7.9 km/h NNE
🌬️
Wind Gust
16.6 km/h
🌡️
Pressure
1011 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
14.8°C
🌐
Wind Degree
26°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
187.9 μg/m³
NO₂
6.7 μg/m³
O₃
56 μg/m³
SO₂
2 μg/m³
PM 2.5
2.9 μg/m³
PM 10
3 μg/m³

Weather Alerts 5

Met · Severe · Immediate
Flood Warning issued April 24 at 11:29AM CDT until April 30 at 1:00PM CDT by NWS St Louis MO

...The Flood Warning continues for the Mississippi River at the following locations... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Canton. River forecasts are based on observed precipitation and forecast precipitation for the...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-24T11:29:00-05:00  ·  Expires: 2026-04-25T23:30:00-05:00
Met · Severe · Immediate
Flood Warning issued April 24 at 9:06PM CDT until April 30 at 1:00PM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Grafton. Mississippi River at Canton. Illinois River at Hardin. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-24T21:06:00-05:00  ·  Expires: 2026-04-26T09:15:00-05:00
Met · Severe · Immediate
Flood Warning issued April 24 at 11:23AM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Illinois... Illinois River at Hardin. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...Until further notice. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-24T11:23:00-05:00  ·  Expires: 2026-04-25T23:30:00-05:00
Met · Severe · Immediate
Flood Warning issued April 24 at 9:06PM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Grafton. Mississippi River at Canton. Illinois River at Hardin. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. River forecasts are based on observed precipitation and forecast...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-24T21:06:00-05:00  ·  Expires: 2026-04-26T09:15:00-05:00
Met · Severe · Immediate
Flood Warning issued April 24 at 11:29AM CDT by NWS St Louis MO

...The Flood Warning continues for the Mississippi River at the following locations... Mississippi River at Grafton. Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. Mississippi River at Canton. River forecasts are based on observed precipitation and forecast precipitation for the...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx

Effective: 2026-04-24T11:29:00-05:00  ·  Expires: 2026-04-25T23:30:00-05:00

Today's Hourly Forecast

24-hour breakdown for Saint Jacobs, Ontario

12 AM
Patchy rain nearby
18°
Patchy rain nearby
💧 88% 💨 9 km/h 🌧️ 88%
1 AM
Overcast
14°
Overcast
💧 93% 💨 7.9 km/h
2 AM
Clear
16°
Clear
💧 83% 💨 7.6 km/h
3 AM
Clear
15°
Clear
💧 85% 💨 6.8 km/h
4 AM
Clear
14°
Clear
💧 84% 💨 7.6 km/h
5 AM
Clear
14°
Clear
💧 85% 💨 7.9 km/h
6 AM
Clear
13°
Clear
💧 87% 💨 7.9 km/h
7 AM
Sunny
14°
Sunny
💧 86% 💨 8.6 km/h
8 AM
Sunny
15°
Sunny
💧 77% 💨 9 km/h
9 AM
Sunny
17°
Sunny
💧 72% 💨 10.8 km/h
10 AM
Sunny
20°
Sunny
💧 68% 💨 10.1 km/h
11 AM
Sunny
21°
Sunny
💧 61% 💨 10.8 km/h
12 PM
Sunny
22°
Sunny
💧 48% 💨 11.2 km/h
1 PM
Sunny
23°
Sunny
💧 43% 💨 11.2 km/h
2 PM
Sunny
24°
Sunny
💧 39% 💨 11.9 km/h
3 PM
Sunny
24°
Sunny
💧 38% 💨 12.6 km/h
4 PM
Sunny
24°
Sunny
💧 38% 💨 13.3 km/h
5 PM
Sunny
23°
Sunny
💧 42% 💨 12.2 km/h
6 PM
Partly Cloudy
22°
Partly Cloudy
💧 49% 💨 11.2 km/h
7 PM
Partly Cloudy
20°
Partly Cloudy
💧 59% 💨 9.4 km/h
8 PM
Overcast
19°
Overcast
💧 62% 💨 10.4 km/h
9 PM
Partly Cloudy
18°
Partly Cloudy
💧 62% 💨 13 km/h
10 PM
Clear
17°
Clear
💧 65% 💨 13.7 km/h
11 PM
Clear
16°
Clear
💧 68% 💨 12.2 km/h

3-Day Forecast

Daily overview for Saint Jacobs, Ontario

Today
Sunny
Sunny
24° / 13°
🌧️ 0% chance of rain
💧 Avg. humidity: 66%
💨 Max wind: 13.7 km/h
🌧️ Total precip: 0.02 mm
☀️ UV Index: 7.2
🌅 Sunrise: 06:12 AM
🌇 Sunset: 07:49 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Sunny
Sunny
24° / 11°
🌧️ 0% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 18 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 7
🌅 Sunrise: 06:11 AM
🌇 Sunset: 07:50 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Moderate rain
Moderate rain
28° / 16°
🌧️ 88% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 34.2 km/h
🌧️ Total precip: 9.4 mm
☀️ UV Index: 7.7
🌅 Sunrise: 06:10 AM
🌇 Sunset: 07:51 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit

Best Time to Visit Saint Jacobs

Plan your trip to Saint Jacobs, Canada around the most favorable weather conditions.

Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
← Back to Saint Jacobs 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Saint Jacobs?
Current conditions in Saint Jacobs: Overcast, temperature 14°C, humidity 93%.
What is the best time to visit Saint Jacobs?
The best time to visit Saint Jacobs is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint Jacobs?
Saint Jacobs is located at approximately 38.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saint Jacobs?
The wettest period in Saint Jacobs is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint Jacobs?
For visits to Saint Jacobs during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Saint Jacobs in?
Saint Jacobs is located in Canada, in the state of Ontario.
What are the public holidays in Saint Jacobs in 2026?
View the 2026 public holidays for Saint Jacobs on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint Jacobs?
The weather forecast for Saint Jacobs uses coordinates 38.7064, -90.6026.
What is the current temperature outside in Saint Jacobs?
The current outdoor temperature in Saint Jacobs is 14°C (57°F) with overcast.
What is the hourly weather forecast for Saint Jacobs today?
Today's hour-by-hour weather breakdown for Saint Jacobs is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Saint Jacobs tomorrow hour by hour?
Tomorrow's forecast for Saint Jacobs shows a high of 24°C and a low of 11°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Saint Jacobs?
Rain is not expected in Saint Jacobs today. Current forecast shows no significant rain probability.
Is it going to rain today in Saint Jacobs?
No, rain is not forecast for Saint Jacobs today. Current conditions show clear to partly cloudy skies.