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Castalia, Ohio Weather

Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →

Castalia weather forecast — hour by hour, 7-day outlook, NOAA radar

Castalia, OH
Saturday, July 4 at 12:31 PM
85
°
Mostly Clear
Feels like
93°
Humidity
71%
Wind
10 mph
Sunrise
2:03 AM
Sunset
5:08 PM
Castalia, OH
Hour by hour · 24h
24-Hour ForecastCastalia, OH: 24-hour forecast. Temperatures range from 71 to 87 degrees Fahrenheit with a 35% chance of precipitation at 11 AM.
L 71°H 87°
Castalia, OH
7-day forecast
  1. Today
    Jul 4
    Foggy
    28%
    87°72°
  2. Sunday
    Jul 5
    Showers
    35%
    0.41″
    81°71°-6°
  3. Monday
    Jul 6
    Light Drizzle
    44%
    76°70°-5°
  4. Tuesday
    Jul 7
    Light Drizzle
    0.01″
    77°70°+1°
  5. Wednesday
    Jul 8
    Partly Cloudy
    86°64°+9°
  6. Thursday
    Jul 9
    Light Drizzle
    45%
    81°67°-5°
  7. Friday
    Jul 10
    Light Drizzle
    45%
    77°70°-4°
Castalia, OH
Anemometer · 24h winds · from true
NESW
From · True
W
263° · veering 17°
Direction
W
263°
Sustained
10
mph
Gust
13
mph
Peak 24h
22
avg 7
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 22 @ 8:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 165SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 17° from the w.
Castalia, OH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
993.0
-0.3 mb in 3h · steady · 29.32 inHg
Now
993.0
mb
3h
-0.3
mb
12h
-1.1
mb
24h
-3.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 992996
9859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW995.7992.3992.4
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Castalia, OH
Air quality
48
AQI
Good
+2 in 6hPeak ~117 @ 11 PM

AQI 48 (Good), driven by Ozone. Ozone at AQI 100 now. With UV 7.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 95 around 1 PM.

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
9.5μg/m³
PM 10Good
10μg/m³
NO₂Good
2μg/m³
OzoneDRIVERUnhealthy SG
139μg/m³
UV IndexHigh
6.9

What's driving it

Ozone × UV × Sky

Ozone at AQI 100 now. With UV 7.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 95 around 1 PM.

Present
AQI 100
UV peak
7.1 at 1 PM
Sky at peak
clear
Projected peak
AQI 95

PM × Wind × Precip

PM2.5 at 9.5 µg/m³, PM10 at 10.3 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.92
Wind
breezy
Recent rain
0h in last 6h
Pattern
background
Castalia, OH
Sky cover · visibility · 24h
Cloud cover
22%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
48.1mi
UNLIMITED
83 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
16:31 UTC · Castalia, OH · NOAA NESDIS / STAR · up to 10848 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
16:31 UTC · Castalia, OH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Castalia, OH
Satellite · infrared · animated
Castalia, OH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Castalia, OH
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:30 AM
Sunrise
2:03 AM
Daylight
15h 05m
Sunset
5:08 PM
Civil dusk
9:42 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Castalia, OH
The moon
Waning Gibbous
80% illuminated
Moonrise
11:28 PM
Moonset
10:34 AM
In sign
♓︎ Pisces
Castalia, OH
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Castalia at a glance

  • Today vs. normal: 15°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: 44824

16-Day Forecast — Castalia

  1. Sat88°72°28%
  2. Sun81°71°35%
  3. Mon76°70°44%
  4. Tue77°70°9%
  5. Wed86°64°5%
  6. Thu81°67°45%
  7. Fri77°70°45%
  8. Sat83°70°27%
  9. Sun77°64°14%
  10. Mon65°61°19%
  11. Tue77°60°19%
  12. Wed84°65°26%
  13. Thu86°69°30%
  14. Fri86°70°19%
  15. Sat85°68°26%
  16. Sun85°69°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 — Castalia

SPC has placed Castalia 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 Castalia

  • 44824

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.