Weather Tomorrow for ZIP 50401
Mason City, IA · View full Mason City forecast
Monday, September 21, 2026
Rain
Precip chance
59%
Wind
6-12 mph
Humidity
96%
Feels like
56–51°F
Rain forecast
Rain likely starts around 9 AM and may continue until 3 PM. Peak chance: 59% around 2 PM.
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
49°Temperature trend58°
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 5 AM☽ | 57°F | Chance Drizzle | 26% | 9 mph ENE | ||
| 6 AM☽ | 57°F | Slight Chance Rain Showers | 23% | 9 mph E | ||
| 7 AM☽ | 56°F | Chance Rain Showers | 34% | 9 mph E | ||
| 8 AM☽ | 55°F | Chance Rain Showers | 30% | 10 mph ENE | ||
| 9 AM☽ | 54°F | Chance Rain Showers | 51% | 10 mph ENE | ||
| 10 AM☽ | 51°F | Chance Rain Showers | 51% | 10 mph ENE | ||
| 11 AM | 51°F | Chance Rain Showers | 51% | 12 mph ENE | ||
| 12 PM | 51°F | Chance Rain Showers | 43% | 10 mph ENE | ||
| 1 PM | 49°F | Chance Rain Showers | 33% | 10 mph NE | ||
| 2 PM | 52°F | Rain Showers Likely | 59% | 9 mph ENE | ||
| 3 PM | 54°F | Chance Rain Showers | 50% | 9 mph ENE | ||
| 4 PM | 54°F | Chance Rain Showers | 35% | 9 mph ENE | ||
| 5 PM | 55°F | Chance Rain Showers | 30% | 9 mph ENE | ||
| 6 PM | 55°F | Chance Rain Showers | 25% | 9 mph ENE | ||
| 7 PM | 56°F | Chance Rain Showers | 26% | 9 mph ENE | ||
| 8 PM | 57°F | Chance Rain Showers | 31% | 9 mph ENE | ||
| 9 PM | 57°F | Chance Rain Showers | 27% | 9 mph ENE | ||
| 10 PM | 57°F | Chance Rain Showers | 25% | 9 mph ENE | ||
| 11 PM☽ | 58°F | Slight Chance Rain Showers | 21% | 8 mph NE | ||
| 12 AM☽ | 56°F | Slight Chance Rain Showers | 15% | 7 mph NE | ||
| 1 AM☽ | 55°F | Slight Chance Rain Showers | 15% | 7 mph NE | ||
| 2 AM☽ | 53°F | Slight Chance Rain Showers | 15% | 7 mph ENE | ||
| 3 AM☽ | 52°F | Slight Chance Rain Showers | 15% | 6 mph ENE | ||
| 4 AM☽ | 51°F | Slight Chance Rain Showers | 15% | 6 mph ENE | ||
Precipitation Timeline
100%
50%
59%
5a11a5p11p
<20%20-50%50-70%>70%
What to Wear Tomorrow
Mild temperatures — a light layer should do
Clothing
- • T-shirt or long-sleeve
- • Light jacket (for morning/evening)
Footwear
Water-resistant shoes
Accessories
- • Umbrella
Conditions
High: 58°F
Low: 49°F
Wind: 6-12 mph
Rain: 59%
Rain expected around 9 AM — carry an umbrella.
Best Time to Be Outside Tomorrow
9 PM – 10 PM
Good conditions for being outside (comfortable temp, light wind, daylight)
5a11a5p11p