Colwell, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Colwell weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle19%0.04″81°68°—
- SundayJul 5Overcast15%—81°66°0°
- MondayJul 6Overcast——81°65°0°
- TuesdayJul 7Overcast——82°63°+1°
- WednesdayJul 8T-storm w/ Hail44%0.02″79°66°-3°
- ThursdayJul 9Overcast45%—78°60°-1°
- FridayJul 10Light Drizzle——78°63°0°
AQI 45 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 46 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 46 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 46
- UV peak
- 4.1 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5 at 7.9 µg/m³, PM10 at 10.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- Wind
- breezy
- Recent rain
- 1h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:10 PM
- Moonset
- 10:13 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Colwell at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 50620
16-Day Forecast — Colwell
- Sat81°68°19%
- Sun81°66°15%
- Mon81°65°1%
- Tue82°63°3%
- Wed79°66°44%
- Thu78°60°45%
- Fri78°63°8%
- Sat75°57°8%
- Sun76°56°11%
- Mon78°57°8%
- Tue80°60°4%
- Wed78°59°23%
- Thu81°63°26%
- Fri82°62°30%
- Sat70°59°25%
- Sun75°61°26%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Colwell
SPC includes Colwell in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Colwell
- 50620
- 50616