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Grissom AFB, Indiana Weather

Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →

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

Grissom AFB, IN
Saturday, July 4 at 8:26 PM
81
°
Overcast
Feels like
87°
Humidity
75%
Wind
10 mph
Sunrise
2:19 AM
Sunset
5:18 PM
Grissom AFB, IN
Hour by hour · 24h
24-Hour ForecastGrissom AFB, IN: 24-hour forecast. Temperatures range from 70 to 84 degrees Fahrenheit with a 69% chance of precipitation at 9 PM.
L 70°H 84°
Grissom AFB, IN
7-day forecast
  1. Today
    Jul 4
    Rain
    69%
    0.38″
    89°71°
  2. Sunday
    Jul 5
    Showers
    41%
    0.24″
    84°70°-5°
  3. Monday
    Jul 6
    Light Drizzle
    27%
    79°65°-5°
  4. Tuesday
    Jul 7
    Overcast
    80°59°+1°
  5. Wednesday
    Jul 8
    Light Drizzle
    82°64°+2°
  6. Thursday
    Jul 9
    Showers
    51%
    0.15″
    77°70°-5°
  7. Friday
    Jul 10
    Light Drizzle
    51%
    76°66°-1°
Grissom AFB, IN
Anemometer · 24h winds · from true
NESW
From · True
W
271° · veering 73°
Direction
W
271°
Sustained
10
mph
Gust
19
mph
Peak 24h
22
avg 4
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 4 · pk 22 @ 3:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 1412SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 73° from the w.
Grissom AFB, IN
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
985.1
-0.1 mb in 3h · steady · 29.09 inHg
Now
985.1
mb
3h
-0.1
mb
12h
-1.9
mb
24h
-2.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 984989
9809859909951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW988.5984.3985.0
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Grissom AFB, IN
Air quality
61
AQI
Moderate
+21 in 6h

AQI 61 (Moderate), driven by Ozone. AQI up 21 in the last 6 hours — air quality is degrading. Ozone at AQI 40 now. With UV 0.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 7 around 1 PM.

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

PM 2.5Good
6.2μg/m³
PM 10Good
7μg/m³
NO₂Good
4μg/m³
OzoneDRIVERModerate
85μg/m³
UV IndexLow
0.1

What's driving it

Ozone × UV × Sky

Ozone at AQI 40 now. With UV 0.1 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 7 around 1 PM.

Present
AQI 40
UV peak
0.1 at 1 PM
Sky at peak
partly cloudy
Projected peak
AQI 7

PM × Wind × Precip

PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.2 µg/m³, PM10 to 7.0 µg/m³.

PM2.5/PM10
0.89
Wind
breezy
Recent rain
2h in last 6h
Pattern
washed out
Grissom AFB, IN
Sky cover · visibility · 24h
Cloud cover
95%
OVERCAST
100%0%−24h−18h−12h−6hnow

Visibility
41.0mi
UNLIMITED
74 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
00:26 UTC · Grissom AFB, IN · 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
00:26 UTC · Grissom AFB, IN · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Grissom AFB, IN
Satellite · infrared · animated
Grissom AFB, IN
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Grissom AFB, IN
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
5:46 AM
Sunrise
2:19 AM
Daylight
14h 59m
Sunset
5:18 PM
Civil dusk
9:53 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Grissom AFB, IN
The moon
Waning Gibbous
77% illuminated
Moonrise
12:02 AM
Moonset
11:56 AM
In sign
♓︎ Pisces
Grissom AFB, IN
Microseason
Jul 1–5

Cicadas claim the scorching afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Grissom AFB at a glance

  • Today vs. normal: 10°F above the seasonal normal for this latitude
  • Last frost: April 20 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

16-Day Forecast — Grissom AFB

  1. Sat89°71°69%
  2. Sun84°70°41%
  3. Mon79°65°27%
  4. Tue80°59°4%
  5. Wed82°64°3%
  6. Thu77°70°51%
  7. Fri76°66°51%
  8. Sat77°60°21%
  9. Sun74°58°11%
  10. Mon77°56°13%
  11. Tue80°59°9%
  12. Wed80°66°24%
  13. Thu78°61°24%
  14. Fri82°64°39%
  15. Sat85°72°45%
  16. Sun79°71°61%

Forecast data from Open-Meteo (CC BY 4.0).

Right now in the garden

Peak growing season

As of July 5, 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 — Grissom AFB

SPC has placed Grissom AFB in the Slight Risk category for severe thunderstorms today.

  • TODAYSLGTSlight Risk
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3TSTMGeneral Thunderstorms

Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.

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 Grissom AFB

  • 46971
  • 46970
  • 46914

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.