Mississippi River at Herculaneum
3.8 mi- Level
- 6.1 ft
Reading from Sat 12:30 AM · NWS gauge page
Observed 2:05 AM CDT at KCPS
Festus, MO weather
Clear and 48°9°.
Today: low 43°6° (likely 43°6° to 50°10°), high 77°25° (likely 74°23° to 77°25°).
Now 48°9°
Clear
- Wind
- Calm
- Light through 2 PM
- Dew point
- 46°8°
- Comfortable
- Humidity
- 93%
- Air 48°9°, dew point 46°8° · fog or dew likely
- UV index
- 0Low
- Moderate 11 AM–4 PM · peak 4
- Air quality
- 44Good
- Main pollutant: Ozone
- Pressure
- 30.29 inHg1026 hPa
- Steady over the last 3 h
Next 2 hours
No precipitation expected in the next 2 hours.
From forecast models
Next 48 hours
About the same as this time yesterday (48°9° then, 49°9° now)
Good hours for
TonightNear 47°8° · Partly cloudy
This morningUp to 65°18° by 11 AM · Partly cloudy
This afternoonUp to 77°25° by 4 PM · Mostly cloudy
TonightDown to 47°8° by 4 AM · Partly cloudy
Tomorrow morningUp to 69°21° by 11 AM · Mostly cloudy
Tomorrow afternoonUp to 79°26° by 4 PM · Cloudy
Tomorrow nightDown to 53°12° by 1 AM · Mostly cloudy
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 2a | Clear | 48°9° (likely 48°9° to 55°13°) | 48°9° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 89% | 38% | 0 |
| Sat 3a | Fog | 47°8° (likely 47°8° to 54°12°) | 47°8° | 0% | 0 mph0 km/h, gusts 5 mph9 km/h | 89% | 68% | 0 |
| Sat 4a | Fog | 46°8° (likely 46°8° to 53°12°) | 46°8° | 0% | 0 mph0 km/h, gusts 5 mph7 km/h | 93% | 40% | 0 |
| Sat 5a | Fog | 45°7° (likely 45°7° to 52°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 93% | 39% | 0 |
| Sat 6a | Fog | 44°7° (likely 44°7° to 51°11°) | 44°7° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 96% | 25% | 0 |
| Sat 7a | Partly sunny | 43°6° (likely 43°6° to 50°10°) | 43°6° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 96% | 37% | 0 |
| Sat 8a | Fog | 45°7° (likely 45°7° to 52°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 93% | 53% | 0 |
| Sat 9a | Sunny | 50°10° (likely 50°10° to 57°14°) | 50°10° | 0% | 1 mph2 km/h from E, gusts 6 mph9 km/h | 93% | 16% | 1 |
| Sat 10a | Partly sunny | 59°15° (likely 59°15° to 62°17°) | 59°15° | 0% | 1 mph2 km/h from SE, gusts 7 mph12 km/h | 75% | 22% | 2 |
| Sat 11a | Partly sunny | 65°18° (likely 65°18° to 67°19°) | 65°18° | 0% | 2 mph3 km/h from SE, gusts 7 mph11 km/h | 60% | 65% | 3 |
| Sat 12p | Partly sunny | 70°21° (likely 69°21° to 71°22°) | 70°21° | 0% | 2 mph3 km/h from SE, gusts 7 mph10 km/h | 49% | 55% | 4 |
| Sat 1p | Partly sunny | 73°23° (likely 72°22° to 74°23°) | 73°23° | 0% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 43% | 68% | 4 |
| Sat 2p | Cloudy | 75°24° (likely 74°23° to 76°24°) | 75°24° | 0% | 3 mph5 km/h from E, gusts 6 mph9 km/h | 38% | 68% | 4 |
| Sat 3p | Partly sunny | 76°24° (likely 74°23° to 76°24°) | 76°24° | 0% | 3 mph5 km/h from E, gusts 6 mph10 km/h | 37% | 70% | 3 |
| Sat 4p | Partly sunny | 77°25° (likely 74°23° to 77°25°) | 77°25° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 36% | 68% | 2 |
| Sat 5p | Partly sunny | 75°24° (likely 71°22° to 75°24°) | 75°24° | 0% | 3 mph5 km/h from E, gusts 7 mph12 km/h | 38% | 52% | 1 |
| Sat 6p | Cloudy | 72°22° (likely 67°19° to 72°22°) | 72°22° | 0% | 3 mph5 km/h from E, gusts 7 mph11 km/h | 44% | 66% | 0 |
| Sat 7p | Partly cloudy | 67°19° (likely 62°17° to 67°19°) | 67°19° | 0% | 2 mph3 km/h from E, gusts 7 mph11 km/h | 52% | 34% | 0 |
| Sat 8p | Partly cloudy | 60°16° (likely 60°16° to 64°18°) | 60°16° | 0% | 1 mph2 km/h from SE, gusts 8 mph12 km/h | 67% | 47% | 0 |
| Sat 9p | Partly cloudy | 57°14° (likely 57°14° to 62°17°) | 57°14° | 0% | 1 mph2 km/h from SE, gusts 6 mph10 km/h | 72% | 57% | 0 |
| Sat 10p | Cloudy | 55°13° (likely 55°13° to 60°16°) | 55°13° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 77% | 67% | 0 |
| Sat 11p | Cloudy | 53°12° (likely 53°12° to 59°15°) | 53°12° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 80% | 66% | 0 |
| Sun 12a | Cloudy | 52°11° (likely 52°11° to 58°14°) | 52°11° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 80% | 62% | 0 |
| Sun 1a | Partly cloudy | 51°11° (likely 51°11° to 57°14°) | 51°11° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 83% | 55% | 0 |
| Sun 2a | Partly cloudy | 50°10° (likely 49°9° to 55°13°) | 50°10° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 83% | 52% | 0 |
| Sun 3a | Mostly clear | 49°9° (likely 48°9° to 54°12°) | 49°9° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 86% | 46% | 0 |
| Sun 4a | Partly cloudy | 47°8° (likely 47°8° to 53°12°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 89% | 52% | 0 |
| Sun 5a | Cloudy | 47°8° (likely 47°8° to 52°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph4 km/h | 89% | 60% | 0 |
| Sun 6a | Partly cloudy | 47°8° (likely 46°8° to 51°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 86% | 47% | 0 |
| Sun 7a | Partly sunny | 45°7° (likely 45°7° to 51°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 93% | 49% | 0 |
| Sun 8a | Partly sunny | 47°8° (likely 46°8° to 52°11°) | 47°8° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 93% | 52% | 0 |
| Sun 9a | Partly sunny | 52°11° (likely 52°11° to 58°14°) | 52°11° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 89% | 57% | 1 |
| Sun 10a | Cloudy | 62°17° (likely 61°16° to 64°18°) | 62°17° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 72% | 77% | 2 |
| Sun 11a | Cloudy | 69°21° (likely 67°19° to 72°22°) | 69°21° | 0% | 0 mph0 km/h, gusts 6 mph10 km/h | 59% | 81% | 3 |
| Sun 12p | Cloudy | 73°23° (likely 71°22° to 77°25°) | 73°23° | 0% | 1 mph2 km/h from SE, gusts 4 mph6 km/h | 49% | 89% | 4 |
| Sun 1p | Cloudy | 77°25° (likely 75°24° to 80°27°) | 77°25° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 42% | 85% | 4 |
| Sun 2p | Cloudy | 78°26° (likely 76°24° to 81°27°) | 78°26° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 39% | 85% | 4 |
| Sun 3p | Cloudy | 78°26° (likely 77°25° to 82°28°) | 78°26° | 0% | 1 mph2 km/h from SE, gusts 4 mph7 km/h | 39% | 86% | 4 |
| Sun 4p | Cloudy | 79°26° (likely 76°24° to 81°27°) | 79°26° | 0% | 2 mph3 km/h from SE, gusts 5 mph9 km/h | 38% | 86% | 2 |
| Sun 5p | Cloudy | 77°25° (likely 73°23° to 79°26°) | 77°25° | 0% | 2 mph3 km/h from E, gusts 5 mph9 km/h | 42% | 86% | 1 |
| Sun 6p | Cloudy | 74°23° (likely 68°20° to 74°23°) | 74°23° | 0% | 2 mph3 km/h from E, gusts 6 mph9 km/h | 46% | 84% | 0 |
| Sun 7p | Cloudy | 69°21° (likely 64°18° to 69°21°) | 69°21° | 0% | 2 mph3 km/h from E, gusts 5 mph8 km/h | 55% | 88% | 0 |
| Sun 8p | Partly cloudy | 62°17° (likely 61°16° to 64°18°) | 62°17° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 70% | 74% | 0 |
| Sun 9p | Mostly cloudy | 58°14° (likely 58°14° to 63°17°) | 58°14° | 0% | 1 mph2 km/h from SE, gusts 3 mph5 km/h | 80% | 69% | 0 |
| Sun 10p | Mostly cloudy | 57°14° (likely 56°13° to 62°17°) | 57°14° | 0% | 1 mph2 km/h from S, gusts 3 mph4 km/h | 80% | 68% | 0 |
| Sun 11p | Mostly cloudy | 55°13° (likely 55°13° to 61°16°) | 55°13° | 0% | 1 mph2 km/h from S, gusts 3 mph4 km/h | 83% | 77% | 0 |
| Mon 12a | Cloudy | 54°12° (likely 54°12° to 60°16°) | 54°12° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 86% | 83% | 0 |
| Mon 1a | Cloudy | 53°12° (likely 53°12° to 59°15°) | 53°12° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 86% | 89% | 0 |
Days ahead
Tap a day for its hours and the official wording.
Today, Oct 24. Cloudy. High 77°25°, low 43°6°. Dry. Forecasts agree.
Morning
6 AM–noon
Sunny, 45°7°Dry
Afternoon
noon–6 PM
Partly sunny, 77°25°Dry
Evening
6 PM–midnight
Partly cloudy, 60°16°Dry
Overnight
midnight–6 AM
Mostly clear, 47°8°Dry
Official NWS forecast
Today: Patchy fog before 10am. Mostly sunny, with a high near 77. East wind 0 to 3 mph.
Tonight: Patchy fog after 3am. Mostly clear, with a low around 43. Northeast wind around 1 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 74°23°–77°25°
- Low, likely
- 43°6°–50°10°
- Wind
- 6 mph10 km/h, gusts 13 mph20 km/h
- UV peak
- 4
Tomorrow, Oct 25. Partly sunny. High 80°27°, low 48°9°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 47°8°Dry
Afternoon
noon–6 PM
Cloudy, 79°26°Dry
Evening
6 PM–midnight
Mostly cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 53°12°Dry
Official NWS forecast
Day: Mostly sunny, with a high near 80. Southeast wind around 2 mph.
Night: Mostly cloudy, with a low around 48. Southeast wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 77°25°–81°27°
- Low, likely
- 45°7°–51°11°
- Wind
- 5 mph9 km/h, gusts 11 mph17 km/h
- UV peak
- 4
Monday, Oct 26. Cloudy. High 79°26°, low 47°8°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 77°25°Dry
Evening
6 PM–midnight
Cloudy, 61°16°Dry
Overnight
midnight–6 AM
Cloudy, 53°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Partly sunny. High near 79, with temperatures falling to around 75 in the afternoon.
Night: Mostly cloudy, with a low around 47.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 77°25°–79°26°
- Low, likely
- 47°8°–56°13°
- Wind
- 6 mph9 km/h, gusts 11 mph17 km/h
- UV peak
- 4
Tuesday, Oct 27. Cloudy. High 76°24°, low 48°9°. Dry. Forecasts agree.
Morning
6 AM–noon
Cloudy, 54°12°Dry
Afternoon
noon–6 PM
Cloudy, 74°23°Dry
Evening
6 PM–midnight
Cloudy, 62°17°Dry
Overnight
midnight–6 AM
Cloudy, 54°12°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly cloudy, with a high near 76.
Night: Mostly cloudy, with a low around 48.
Forecasts agreeIndependent forecasts are close; the range is narrow.
- High, likely
- 74°23°–76°24°
- Low, likely
- 48°9°–55°13°
- Wind
- 7 mph11 km/h, gusts 20 mph31 km/h
- UV peak
- 3
Wednesday, Oct 28. Partly sunny. High 80°27°, low 50°10°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 57°14°Dry
Afternoon
noon–6 PM
Sunny, 78°26°Dry
Evening
6 PM–midnight
Clear, 64°18°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 80.
Night: Mostly clear, with a low around 50.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 76°24°–80°27°
- Low, likely
- 50°10°–56°13°
- Wind
- 8 mph12 km/h, gusts 20 mph32 km/h
- UV peak
- 4
Thursday, Oct 29. Mostly sunny. High 79°26°, low 49°9°. Dry. Mostly agree.
Morning
6 AM–noon
Sunny, 58°14°Dry
Afternoon
noon–6 PM
Mostly sunny, 78°26°Dry
Evening
6 PM–midnight
Clear, 65°18°Dry
Overnight
midnight–6 AM
Clear, 55°13°Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 79.
Night: Partly cloudy, with a low around 49.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 77°25°–81°27°
- Low, likely
- 49°9°–57°14°
- Wind
- 11 mph18 km/h, gusts 28 mph44 km/h
- UV peak
- 4
Friday, Oct 30. Partly sunny. High 77°25°, low 55°13°. Dry. Mostly agree.
Morning
6 AM–noon
Partly sunny, 58°15°Dry
Afternoon
noon–6 PM
Cloudy, 80°26°Dry
Evening
6 PM–midnight
Cloudy, 66°19°Dry
Overnight
midnight–6 AM
Cloudy, 58°14°20% chance
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 77.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
- High, likely
- 77°25°–81°27°
- Low, likely
- 50°10°–58°14°
- Wind
- 8 mph12 km/h, gusts 22 mph35 km/h
- UV peak
- 4
Saturday, Oct 31. Rain. High 75°24°, low 60°16°. Rain 0.17 in4.3 mm, 30% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 62°17°30% chance
Afternoon
noon–6 PM
Drizzle, 76°24°30% chance
Evening
6 PM–midnight
Rain, 67°19°30% chance · 0.08 in2 mm
Overnight
midnight–6 AM
Drizzle, 66°19°40% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 71°22°–80°27°
- Low, likely
- 56°13°–63°17°
- Wind
- 11 mph17 km/h, gusts 34 mph54 km/h
- UV peak
- 1
Sunday, Nov 1. Drizzle. High 73°23°, low 63°17°. Rain 0.27 in6.9 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 66°19°40% chance · 0.04 in1 mm
Afternoon
noon–6 PM
Drizzle, 74°23°40% chance · 0.07 in1.7 mm
Evening
6 PM–midnight
Cloudy, 66°19°40% chance · 0.23 in5.9 mm
Overnight
midnight–6 AM
Cloudy, 58°14°40% chance · 0.14 in3.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 71°22°–80°27°
- Low, likely
- 60°16°–65°18°
- Wind
- 18 mph29 km/h, gusts 40 mph64 km/h
- UV peak
- 3
Monday, Nov 2. Showers. High 68°20°, low 55°13°. Rain 0.39 in9.9 mm, 40% chance. Forecasts differ.
Morning
6 AM–noon
Cloudy, 60°16°30% chance · 0.08 in2 mm
Afternoon
noon–6 PM
Cloudy, 65°18°30% chance · 0.12 in3.1 mm
Evening
6 PM–midnight
Cloudy, 59°15°Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
- High, likely
- 65°18°–72°22°
- Low, likely
- 53°12°–59°15°
- Wind
- 13 mph21 km/h, gusts 37 mph59 km/h
- UV peak
- 3
The outlook
Today
Dry, high 77°, low 43°.
Tomorrow
Dry, high 80°, low 48°, warming up.
Monday
Dry, high 79°, low 47°.
Rest of week
Highs 68–80°; chance of precipitation on Sunday.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (LSX) (opens in a new tab)
What changed since yesterday
No meaningful changes from yesterday’s forecast.
Radar
Radar data: NOAA MRMS, rendered by forecast.blue
Radar loads when scrolled into view
Rivers
NOAA river gauges within 25 mi
Below flood stage
Joachim Creek at DeSoto
10 mi- Level
- 1.6 ft
- Flow
- 5 cfs
Reading from Sat 1:10 AM · NWS gauge page
Meramec River at Arnold
17 mi- Level
- 5.8 ft
- Flow
- 7,250 cfs
Reading from Sat 1 AM · NWS gauge page
Big River at Richwoods
17 mi- Level
- 1.8 ft
- Flow
- 105 cfs
Reading from Sat 12:30 AM · NWS gauge page
Sun & moon
Sun
Sunrise 7:19 AM, sunset 6:11 PM.
- Daylight
- 10 h 52 min
- Losing 2 min 16 s a day; shortest Dec 21, 1 h 22 min less
- Golden hour
- 5:35–6:28 PM
- Morning 7:02–7:55 AM
- Blue hour
- 6:28–6:38 PM
- Morning 6:52–7:02 AM; first light 6:52 AM
Stars tonight? Poor
Clouds most of the night (about 42% cover).
Moon
Waxing gibbous
96% lit · growing
- Today
- sets 5:34 AM · rises 5:08 PM
- Full moon
- Oct 25
- New moon
- Nov 9
