Weather StoryAlmanac, microseasons, and the day's weather story.

Martinsville, Ohio Weather

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

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

Martinsville, OH
Saturday, July 4 at 9:39 AM
80
°
Clear
Feels like
87°
Humidity
73%
Wind
5 mph
Sunrise
2:14 AM
Sunset
5:05 PM
Martinsville, OH
Hour by hour · 24h
24-Hour ForecastMartinsville, OH: 24-hour forecast. Temperatures range from 71 to 91 degrees Fahrenheit with a 24% chance of precipitation at 6 PM.
L 71°H 91°
Martinsville, OH
7-day forecast
  1. Today
    Jul 4
    Overcast
    24%
    91°73°
  2. Sunday
    Jul 5
    Rain
    54%
    0.24″
    87°71°-4°
  3. Monday
    Jul 6
    Thunderstorm
    54%
    82°68°-5°
  4. Tuesday
    Jul 7
    Overcast
    18%
    79°63°-3°
  5. Wednesday
    Jul 8
    Light Drizzle
    19%
    85°65°+6°
  6. Thursday
    Jul 9
    Thunderstorm
    42%
    85°66°
  7. Friday
    Jul 10
    Light Drizzle
    55%
    78°69°-7°
Martinsville, OH
Anemometer · 24h winds · from true
NESW
From · True
SW
232° · veering 20°
Direction
SW
232°
Sustained
5
mph
Gust
8
mph
Peak 24h
13
avg 4
Beaufort · 2 · LIGHT 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 4 · pk 13 @ 9:00p
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 133SUSTGUST
−24h−18h−12h−6hnow
A whisper of wind — leaves barely shift on the trees.
Martinsville, OH
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
979.2
+1.2 mb in 3h · rising · 28.92 inHg
Now
979.2
mb
3h
+1.2
mb
12h
0.0
mb
24h
-2.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 978982
970975980985990-21h-18h-15h-12h-9h-6h-3h-24hNOW982.1978.0979.3
−24h−18h−12h−6hnow
The low is filling — pressure climbing out of storm territory.
Martinsville, OH
Air quality
56
AQI
Moderate
-1 in 6hPeak ~74 @ 8 PM

AQI 56 (Moderate), driven by PM2.5. AQI projected to climb to 74 over the next 6 hours. PM2.5 at 12.9 µg/m³ (AQI 58) with a 0.92 fine-to-coarse ratio and 5 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 during the projected peak around 8 PM.

PM 2.5DRIVERModerate
12.9μg/m³
PM 10Good
14μg/m³
NO₂Good
10μg/m³
OzoneModerate
81μg/m³
UV IndexLow
2.0

What's driving it

Ozone × UV × Sky

Ozone at AQI 38 now. With UV 4.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 20 around 1 PM.

Present
AQI 38
UV peak
4.0 at 1 PM
Sky at peak
clear
Projected peak
AQI 20

PM × Wind × Precip

PM2.5 at 12.9 µg/m³ (AQI 58) with a 0.92 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.

PM2.5/PM10
0.92
Wind
light
Recent rain
0h in last 6h
Pattern
stagnant smoke
Martinsville, OH
Sky cover · visibility · 24h
Cloud cover
17%
CLEAR
100%0%−24h−18h−12h−6hnow

Visibility
44.4mi
UNLIMITED
63 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
13:39 UTC · Martinsville, 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
13:39 UTC · Martinsville, OH · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Martinsville, OH
Satellite · infrared · animated
Martinsville, OH
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Martinsville, OH
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:42 AM
Sunrise
2:14 AM
Daylight
14h 51m
Sunset
5:05 PM
Civil dusk
9:38 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Martinsville, OH
The moon
Waning Gibbous
81% illuminated
Moonrise
11:29 PM
Moonset
10:41 AM
In sign
♓︎ Pisces
Martinsville, OH
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

bird
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Martinsville at a glance

  • Today vs. normal: 8°F above the seasonal normal for this latitude
  • Last frost: April 12 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 45146

16-Day Forecast — Martinsville

  1. Sat92°73°24%
  2. Sun87°71°54%
  3. Mon82°68°54%
  4. Tue79°63°18%
  5. Wed85°65°19%
  6. Thu85°66°42%
  7. Fri78°69°55%
  8. Sat84°65°30%
  9. Sun76°60°25%
  10. Mon70°54°13%
  11. Tue75°60°13%
  12. Wed82°64°23%
  13. Thu84°66°23%
  14. Fri85°69°19%
  15. Sat83°68°39%
  16. Sun85°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 — Martinsville

SPC has placed Martinsville 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 Martinsville

  • 45146

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.