Hopkinton, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hopkinton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle70%0.07″83°69°—
- SundayJul 5Overcast10%—83°67°0°
- MondayJul 6Clear——79°64°-4°
- TuesdayJul 7Overcast——81°62°+2°
- WednesdayJul 8T-storm w/ Hail36%—81°64°0°
- ThursdayJul 9Light Showers43%—79°66°-2°
- FridayJul 10Light Drizzle14%—80°63°+1°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 8.8 µg/m³, PM10 at 12.1 µg/m³ — typical background levels with no transport signature.
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 44 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 44
- UV peak
- 4.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 44
PM × Wind × Precip
PM2.5 at 8.8 µg/m³, PM10 at 12.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.73
- 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
- 11:03 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Hopkinton at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 30 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52237
16-Day Forecast — Hopkinton
- Sat83°69°70%
- Sun83°67°10%
- Mon79°64°2%
- Tue81°62°3%
- Wed81°64°36%
- Thu79°66°43%
- Fri80°63°14%
- Sat74°61°12%
- Sun76°58°10%
- Mon76°57°8%
- Tue78°59°7%
- Wed77°59°23%
- Thu82°63°26%
- Fri76°66°20%
- Sat75°61°23%
- Sun75°58°23%
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 — Hopkinton
SPC includes Hopkinton 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 Hopkinton
- 52237