Marshalltown, Iowa Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Marshalltown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——78°50°—
- TuesdayJun 16Overcast12%—75°59°-3°
- WednesdayJun 17T-storm w/ Hvy Hail93%—83°58°+8°
- ThursdayJun 18Thunderstorm——72°54°-11°
- FridayJun 19Overcast——74°52°+2°
- SaturdayJun 20Light Rain33%0.32″65°59°-9°
- SundayJun 21Foggy47%—73°60°+8°
AQI 24 (Good), driven by Ozone. AQI down 7 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 9 PM.
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:36 AM
- Moonset
- 9:08 PM
- In sign
- ♋︎ Cancer
Toward the solstice glow
Marshalltown at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 28 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Marshalltown
- Mon78°50°1%
- Tue75°59°12%
- Wed83°58°93%
- Thu72°54°3%
- Fri74°52°2%
- Sat65°59°33%
- Sun73°60°47%
- Mon72°54°30%
- Tue72°53°12%
- Wed74°56°11%
- Thu75°63°12%
- Fri88°67°32%
- Sat88°73°24%
- Sun80°62°31%
- Mon81°58°33%
- Tue80°65°39%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Marshalltown
SPC has placed Marshalltown in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3SLGTSlight Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 Marshalltown
- 50158