Live Weather & Forecast

Weather in Saint Peters

Missouri, United States · Real-time conditions & 3-day outlook

Flag of United States
Clear
14°C
Feels like 13°C
58°F / Feels 56°F
Clear
Saint Peters, Missouri
🌙 Nighttime
Updated: 2026-04-12 01:30
💧
Humidity
90%
💨
Wind
14.8 km/h S
🌬️
Wind Gust
30.6 km/h
🌡️
Pressure
1019 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
13.7°C
🌐
Wind Degree
177°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
156.9 μg/m³
NO₂
4.3 μg/m³
O₃
87 μg/m³
SO₂
2 μg/m³
PM 2.5
5.5 μg/m³
PM 10
5.7 μg/m³

Weather Alerts 2

Met · Severe · Immediate
Flood Warning issued April 11 at 11:35AM CDT by NWS St Louis MO

...The Flood Warning continues for the following river in Missouri and Illinois... Mississippi River at Clarksville. Mississippi River at Louisiana. 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...Mississippi River at Clarksville. * WHEN...Until further notice....

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: 2026-04-11T11:35:00-05:00  ·  Expires: 2026-04-12T23:45:00-05:00
Met · Severe · Immediate
Flood Warning issued April 11 at 9:46PM CDT by NWS St Louis MO

...The Flood Warning continues for the following rivers in Missouri...Illinois... Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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...Mississippi River at Clarksville....

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: 2026-04-11T21:46:00-05:00  ·  Expires: 2026-04-13T10:00:00-05:00

Today's Hourly Forecast

24-hour breakdown for Saint Peters, Missouri

12 AM
Clear
17°
Clear
💧 83% 💨 15.5 km/h
1 AM
Clear
14°
Clear
💧 90% 💨 14.8 km/h
2 AM
Clear
17°
Clear
💧 82% 💨 15.1 km/h
3 AM
Clear
17°
Clear
💧 81% 💨 16.6 km/h
4 AM
Clear
16°
Clear
💧 81% 💨 17.3 km/h
5 AM
Clear
16°
Clear
💧 81% 💨 15.8 km/h
6 AM
Clear
16°
Clear
💧 80% 💨 15.8 km/h
7 AM
Sunny
17°
Sunny
💧 78% 💨 17.3 km/h
8 AM
Sunny
19°
Sunny
💧 71% 💨 20.5 km/h
9 AM
Sunny
21°
Sunny
💧 65% 💨 23 km/h
10 AM
Sunny
24°
Sunny
💧 59% 💨 24.5 km/h
11 AM
Sunny
24°
Sunny
💧 56% 💨 25.9 km/h
12 PM
Overcast
25°
Overcast
💧 59% 💨 26.3 km/h
1 PM
Cloudy
26°
Cloudy
💧 53% 💨 25.6 km/h
2 PM
Partly Cloudy
26°
Partly Cloudy
💧 51% 💨 27.7 km/h
3 PM
Overcast
26°
Overcast
💧 50% 💨 24.5 km/h
4 PM
Overcast
26°
Overcast
💧 50% 💨 27.4 km/h
5 PM
Overcast
25°
Overcast
💧 48% 💨 25.9 km/h
6 PM
Overcast
25°
Overcast
💧 48% 💨 24.8 km/h
7 PM
Overcast
24°
Overcast
💧 48% 💨 29.9 km/h
8 PM
Cloudy
23°
Cloudy
💧 50% 💨 31 km/h
9 PM
Overcast
23°
Overcast
💧 50% 💨 24.8 km/h
10 PM
Partly Cloudy
21°
Partly Cloudy
💧 51% 💨 21.6 km/h
11 PM
Overcast
19°
Overcast
💧 72% 💨 22 km/h

3-Day Forecast

Daily overview for Saint Peters, Missouri

Today
Partly Cloudy
Partly Cloudy
27° / 16°
🌧️ 0% chance of rain
💧 Avg. humidity: 64%
💨 Max wind: 31 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:30 AM
🌇 Sunset: 07:37 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
Patchy rain nearby
27° / 17°
🌧️ 85% chance of rain
💧 Avg. humidity: 75%
💨 Max wind: 26.3 km/h
🌧️ Total precip: 2.69 mm
☀️ UV Index: 2
🌅 Sunrise: 06:29 AM
🌇 Sunset: 07:38 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
Thundery outbreaks in nearby
28° / 21°
🌧️ 0% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 29.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.9
🌅 Sunrise: 06:27 AM
🌇 Sunset: 07:39 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Saint Peters

Plan your trip to Saint Peters, United States 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 Peters 🗓 View Holidays 2026

Frequently Asked Questions

People also ask — answers optimized for search engines and voice queries.

What is the current weather in Saint Peters?
Current conditions in Saint Peters: Clear, temperature 14°C, humidity 90%.
What is the best time to visit Saint Peters?
The best time to visit Saint Peters is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint Peters?
Saint Peters is located at approximately 38.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saint Peters?
The wettest period in Saint Peters is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint Peters?
For visits to Saint Peters during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Saint Peters in?
Saint Peters is located in United States, in the state of Missouri.
What are the public holidays in Saint Peters in 2026?
View the 2026 public holidays for Saint Peters on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint Peters?
The weather forecast for Saint Peters uses coordinates 38.7916, -90.5958.