Saint John, IN Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Saint John, IN in one place.
A chance of showers and thunderstorms. Cloudy, with a low around 61. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Saint John, IN is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 16, 2026 4:50 AM CDT.
The active forecast window currently covers Apr 16 to Apr 22, 2026 for Saint John, IN.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 4:50 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Saint John
Friday looks like the warmest upcoming period in Saint John at 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 34 degrees F.
The strongest winds are forecast for Friday at about 5 to 20 mph SSE.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 4:50 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms between 8am and noon, then scattered showers and thunderstorms between noon and 2pm, then a slight chance of showers and thunderstorms between 2pm and 4pm. Partly sunny. High near 71, with temperatures falling to around 68 in the afternoon. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
Patchy fog after 10pm. Partly cloudy, with a low around 50. East northeast wind 5 to 10 mph. New rainfall amounts less than a tenth of an inch possible.
Patchy fog before 8am. Mostly sunny, with a high near 81. South southeast wind 5 to 20 mph, with gusts as high as 30 mph.
Showers and thunderstorms likely between 7pm and 10pm, then showers and thunderstorms. Mostly cloudy, with a low around 49. South southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Rain showers before 1pm. Partly sunny, with a high near 59. Chance of precipitation is 90%.
Mostly clear, with a low around 36.
Mostly sunny, with a high near 51.
Areas of frost after 4am. Partly cloudy, with a low around 34.
Areas of frost before 8am. Sunny, with a high near 59.
Mostly clear, with a low around 46.
Mostly sunny, with a high near 72.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 51.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 69.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 16
|
Chance Showers And Thunderstorms
|
61°F |
10 mph
SSW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms
|
71°F |
10 to 15 mph
W
|
|
Thursday Night
Apr 16
|
Patchy Fog
|
50°F |
5 to 10 mph
ENE
|
|
Friday
Apr 17
|
Patchy Fog then Mostly Sunny
|
81°F |
5 to 20 mph
SSE
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
49°F |
15 mph
SSW
|
|
Saturday
Apr 18
|
Rain Showers
|
59°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Mostly Clear
|
36°F |
10 to 15 mph
WNW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
51°F |
10 to 15 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy then Areas Of Frost
|
34°F |
5 to 10 mph
NW
|
|
Monday
Apr 20
|
Areas Of Frost then Sunny
|
59°F |
5 to 10 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
46°F |
10 to 15 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
72°F |
15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
51°F |
10 to 15 mph
WSW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Mostly Sunny
|
69°F |
10 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Saint John.