Jamestown, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Jamestown weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast22%—91°71°—
- SundayJul 5Rain24%0.20″87°71°-4°
- MondayJul 6Thunderstorm63%—81°67°-6°
- TuesdayJul 7Light Drizzle——79°63°-2°
- WednesdayJul 8Light Drizzle11%—84°64°+5°
- ThursdayJul 9Thunderstorm39%—81°65°-3°
- FridayJul 10Drizzle60%—78°69°-3°
AQI 40 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 96 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 99 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 96 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 99 around 1 PM.
- Present
- AQI 96
- UV peak
- 7.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 99
PM × Wind × Precip
PM2.5 at 10.9 µg/m³, PM10 at 13.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.82
- Wind
- breezy
- 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
- 11:29 PM
- Moonset
- 10:40 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Jamestown at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 14 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45335
16-Day Forecast — Jamestown
- Sat91°71°22%
- Sun87°71°24%
- Mon81°67°63%
- Tue79°63°9%
- Wed84°64°11%
- Thu81°65°39%
- Fri78°69°60%
- Sat83°67°33%
- Sun76°61°13%
- Mon68°54°14%
- Tue75°61°13%
- Wed81°63°24%
- Thu84°66°27%
- Fri83°69°19%
- Sat84°68°48%
- Sun86°70°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 — Jamestown
SPC has placed Jamestown in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Jamestown
- 45335