Letts, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Letts weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast38%—85°69°—
- SundayJul 5Overcast14%—85°70°0°
- MondayJul 6Overcast——81°65°-4°
- TuesdayJul 7Overcast——82°62°+1°
- WednesdayJul 8T-storm w/ Hail12%—84°64°+2°
- ThursdayJul 9T-storm w/ Hail37%0.01″81°71°-3°
- FridayJul 10Drizzle21%—82°66°+1°
AQI 30 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±4 points). Ozone at AQI 45 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 28 around 1 PM.
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 45 now. With UV 6.5 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 28 around 1 PM.
- Present
- AQI 45
- UV peak
- 6.5 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 28
PM × Wind × Precip
PM2.5 at 5.2 µg/m³, PM10 at 6.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.75
- Wind
- light
- Recent rain
- 0h 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
- 11:01 PM
- Moonset
- 10:09 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Letts at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52754
16-Day Forecast — Letts
- Sat85°69°38%
- Sun85°70°14%
- Mon81°65°4%
- Tue82°62°3%
- Wed84°64°12%
- Thu81°71°37%
- Fri82°66°21%
- Sat72°62°13%
- Sun76°59°9%
- Mon75°58°9%
- Tue77°59°9%
- Wed78°58°10%
- Thu82°64°19%
- Fri78°66°19%
- Sat79°65°19%
- Sun73°59°29%
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 — Letts
SPC includes Letts 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 Letts
- 52754