Plymouth, Iowa Weather
Toward the solstice glow. Day 86 of spring. Read this microseason across nine climate regions →
Plymouth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 13Overcast34%—77°61°—
- SundayJun 14Overcast——69°53°-8°
- MondayJun 15Light Drizzle—0.01″73°52°+4°
- TuesdayJun 16Light Rain24%0.15″77°53°+4°
- WednesdayJun 17Showers58%0.19″68°53°-9°
- ThursdayJun 18Overcast35%—72°53°+4°
- FridayJun 19Mostly Clear15%—74°48°+2°
AQI 30 (Good), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 6.2 µg/m³ (AQI 34) with a 0.94 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 6.2 µg/m³ (AQI 34) with a 0.94 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 3:43 AM
- Moonset
- —
- In sign
- ♉︎ Taurus
Toward the solstice glow
Plymouth at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Prune spring-blooming shrubs after flowers fade.
15-Day Forecast — Plymouth
- Sat79°61°34%
- Sun69°53°1%
- Mon73°52°4%
- Tue77°53°24%
- Wed68°53°58%
- Thu72°53°35%
- Fri74°48°15%
- Sat78°60°33%
- Sun74°57°33%
- Mon71°52°21%
- Tue65°53°16%
- Wed80°63°32%
- Thu77°61°29%
- Fri71°55°23%
- Sat73°55°30%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 13, 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 — Plymouth
SPC has placed Plymouth in the General Thunderstorms category for severe thunderstorms today.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
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 Plymouth
- 50464