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

Montgomery, Illinois Weather

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

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

Montgomery, IL
Saturday, July 4 at 9:49 AM
73
°
Mostly Clear
Feels like
78°
Humidity
91%
Wind
7 mph
Sunrise
12:24 AM
Sunset
3:31 PM
Montgomery, IL
Hour by hour · 24h
24-Hour ForecastMontgomery, IL: 24-hour forecast. Temperatures range from 67 to 82 degrees Fahrenheit with a 45% chance of precipitation at 6 PM.
L 67°H 82°
Montgomery, IL
7-day forecast
  1. Today
    Jul 4
    Rain
    84%
    0.28″
    82°70°—
  2. Sunday
    Jul 5
    Foggy
    14%
    —
    78°67°-4°
  3. Monday
    Jul 6
    Mostly Clear
    —
    —
    81°63°+3°
  4. Tuesday
    Jul 7
    Overcast
    —
    —
    81°59°0°
  5. Wednesday
    Jul 8
    Overcast
    25%
    —
    81°61°0°
  6. Thursday
    Jul 9
    Light Showers
    38%
    0.18″
    78°65°-3°
  7. Friday
    Jul 10
    Overcast
    38%
    —
    82°62°+4°
Montgomery, IL
Next 24 hours · Mild now
64°75°86°6a12p6p12anow 71°high 82°low 67°PRECIP %
Montgomery, IL
Anemometer · 24h winds · from true
NESW
From · True
WSW
256° · veering 70°
Direction
WSW
256°
Sustained
7
mph
Gust
18
mph
Peak 24h
18
avg 5
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 5 · pk 18
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 173SUSTGUST
−24h−18h−12h−6hnow
Light breeze veering 70° from the wsw.
Montgomery, IL
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
990.8
-1.5 mb in 3h · falling · 29.26 inHg
Now
990.8
mb
3h
-1.5
mb
12h
-0.1
mb
24h
-3.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 991–995
9859909951000STORM|RAIN-21h-18h-15h-12h-9h-6h-3h-24hNOW994.6990.6990.6
−24h−18h−12h−6hnow
Deep low still deepening — rough seas, strong wind, persistent rain.
Montgomery, IL
Air quality
31
AQI
Good
↓-7 in 6h

AQI 31 (Good), driven by PM2.5. AQI down 7 over the last 6 hours (gradual decline). PM2.5 at 6.7 µg/m³, PM10 at 6.9 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.

PM 2.5DRIVERGood
6.7μg/m³
PM 10Good
7μg/m³
NO₂Good
10μg/m³
OzoneGood
49μg/m³
UV IndexLow
0.2

What's driving it

PM × Wind × Precip

PM2.5 at 6.7 µg/m³, PM10 at 6.9 µg/m³ — typical background levels with no transport signature.

PM2.5/PM10
0.97
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).

7-DAY AQI TREND50100SATSUNMONTUEWEDTHUFRISAT7-DAY PM2.5 TREND · μg/m³300
Montgomery, IL
Sky cover · visibility · 24h
Cloud cover
28%
MOSTLY CLEAR
100%0%−24h−18h−12h−6hnow
Visibility
28.7mi
UNLIMITED
54 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
14:49 UTC · Montgomery, IL · 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
14:49 UTC · Montgomery, IL · NOAA NESDIS / STAR · 5-min cadence · up to 10000 px
Montgomery, IL
Satellite · infrared · animated
Montgomery, IL
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Montgomery, IL
Almanac · Saturday, July 4
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
Civil dawn
4:51 AM
Sunrise
12:24 AM
Daylight
15h 07m
Sunset
3:31 PM
Civil dusk
9:06 PM
Planting note
Harvest early potatoes. Begin drying onions on the surface.
Montgomery, IL
The moon
Waning Gibbous
81% illuminated
Moonrise
10:51 PM
Moonset
9:57 AM
In sign
♓︎ Pisces
Montgomery, IL
Microseason
Jul 1–5

Cicadas claim the afternoon

plant
Jan 151% of the yearDec 31

Read this microseason across nine climate regions →

Montgomery at a glance

  • Today vs. normal: 3°F above the seasonal normal for this latitude
  • Last frost: April 26 (climatological average for this latitude)
  • Microseason: Jul 1–5
  • Planting window: Harvest early potatoes. Begin drying onions on the surface.

ZIP code: 60538

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 — Montgomery

SPC includes Montgomery 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.

January 1–5: The year turns in silence.January 6–10: Ice thickens on still water.January 11–15: Shortest shadows lengthen.January 16–20: Pheasants begin to call.January 21–25: Springs begin to thaw.January 26–31: Chickadees announce dawn.February 1–5: East wind softens the frost.February 6–10: Sap begins to rise.February 11–15: First snowdrops appear.February 16–20: Red-winged blackbirds return.February 21–25: Rain begins to replace snow.February 26–28: Skunk cabbage pushes through ice.March 1–5: Ice withdraws from the reservoir.March 6–10: Crocuses open to weak sun.March 11–15: Peepers call from the marsh.March 16–20: Woodcocks spiral at dusk.March 21–25: Equinox — light overtakes dark.March 26–31: Forsythia opens along the fences.April 1–5: Cherry blossoms drift like snow.April 6–10: Warblers appear in the understory.April 11–15: Magnolias bloom and fall in a day.April 16–20: Dogwoods float above the forest.April 21–25: Lilacs perfume the evening.April 26–30: Last frost releases the garden.May 1–5: Warblers flood the Ramble.May 6–10: Tulip poplars light their candles.May 11–15: Shad run up the rivers.May 16–20: Roses open along the stoops.May 21–25: Firefly scouts appear at dusk.May 26–31: Strawberries ripen in the sun.June 1–5: Fireflies rise from the lawn.June 6–10: Elderflowers open in hedgerows.June 11–15: Solstice approaches — longest light.June 16–20: Honeysuckle sweetens the night.June 21–25: Solstice — the sun stands still.June 26–30: Lightning bugs drift through oaks.July 1–5: Cicadas claim the afternoon.July 6–10: Queen Anne's lace lines the roads.July 11–15: Thunder builds each afternoon.July 16–20: Corn reaches for the tassels.July 21–25: Dog days settle in the haze.July 26–31: Katydids begin their chorus.August 1–5: Night falls a minute earlier.August 6–10: Sunflowers face the morning.August 11–15: Goldenrod begins to bloom.August 16–20: Crickets pulse through warm nights.August 21–25: First cool morning surprises.August 26–31: Monarchs stage for flight.September 1–5: School buses reappear.September 6–10: Asters purple the roadsides.September 11–15: Hawk migration over the Hudson.September 16–20: Equinox — dark overtakes light.September 21–25: Apples hang heavy on the branch.September 26–30: Geese begin to chevron south.October 1–5: Witch hazel blooms as others fade.October 6–10: Maples begin to blaze.October 11–15: Frost paints the garden black.October 16–20: Oaks turn bronze and russet.October 21–25: Leaves rattle down the gutters.October 26–31: Clocks fall back — dusk at five.November 1–5: Ginkgos drop overnight.November 6–10: Last leaves cling stubbornly.November 11–15: Juncos arrive from the north.November 16–20: Bare branches reveal the sky.November 21–25: First flurries dust the rooftops.November 26–30: Woodsmoke curls through the block.December 1–5: Darkness settles before dinner.December 6–10: Holly and winterberry persist.December 11–15: Shortest day approaches.December 16–20: Ice begins to form at the edges.December 21–25: Solstice — the sun begins return.December 26–31: The year turns in silence.🌱February 14 — First skunk-cabbage spathes thaw their way up☀️March 20 — Spring equinox — day and night balance🌸April 5 — Cherry blossoms peak in the parks🐦May 10 — Warbler migration peaks along the coast✨May 25 — First fireflies scout the meadows at dusk🌞June 21 — Summer solstice — longest day🦗July 25 — Peak cicada chorus in the afternoons🌊August 18 — Warmest sea-surface temperatures of the year🍂September 22 — Autumn equinox — the slow turn❄️October 25 — First widespread frost in the suburbs🍁November 10 — Peak leaf color across the Hudson Valley🌙December 21 — Winter solstice — longest night

Microseason · July 1–5

Cicadas claim the afternoon

Annual cicada buzz begins, peaking in the heat of the day.

Day 185 of 365 · Wedge 37 of 72

The solar year drawn as a wheel of 72 five-day windows. Each wedge is one microseason; the four colored arcs mark winter, spring, summer, and autumn; the small icons sit at notable phenological events. The crimson pointer creeps clockwise as the year turns.

Planting calendar

MonthPlantHarvest
January——
February——
March——
Aprillettuce, peas, spinach, radishes—
Maylettuce, peas, spinach, radishes, tomatoes, peppers, beans, squashlettuce, peas, radishes
Junetomatoes, peppers, beans, squashlettuce, peas, radishes
Julytomatoes, peppers, beans, squashtomatoes, beans, summer squash
August—tomatoes, beans, summer squash
Septemberfall brassicas, garlic (overwinter), carrotstomatoes, beans, summer squash
Octoberfall brassicas, garlic (overwinter), carrotswinter squash, tomatoes (last)
November——
December——

A year in weather

In Montgomery, July runs warmest near 76°F and January coldest around 23°F, while May is the wettest month (4.3 inches) and January the driest (1.7 inches).

MonthMean tempPrecipRainy days
January23°1.7″14
February26°1.9″13
March37°2.9″15
April50°3.8″17
May59°4.3″18
June70°4.0″15
July76°2.9″14
August75°3.1″14
September67°3.1″13
October55°2.9″11
November40°3.0″12
December27°2.2″13

Regional context

By the nearest station's NOAA NCEI 1991-2020 normals, Montgomery sees 23°F Januarys and 76°F Julys, a 53°F range, plus around 35.8 inches of precipitation across 170 days.

Montgomery's rain peaks in summer: May brings 4.3 inches over 17.9 thunderstorm-fed days, while January sees just 1.7 inches across 14.3 days under cooler, drier air. That summer-storm rhythm groups Montgomery with places like Boulder Hill, IL, Oswego, IL and Aurora, IL.

By mid-April the frosts ease in Montgomery, opening the season for kale, peas, spinach, and parsnips. Hold Montgomery's tender crops — tomatoes, peppers, basil — until 10-14 days past Montgomery's last frost. It shuts near mid-November, when freezes return to Montgomery and tender plants need cover. In Montgomery, low spots run 4-7°F colder than nearby slopes, nudging Montgomery's frost dates a week.

Similar climates: Boulder Hill, IL, Oswego, IL, Aurora, IL, Prestbury, IL, Sugar Grove, IL.

Frequently asked

When does it freeze in Montgomery?
Frost typically leaves Montgomery by mid-April and returns to Montgomery near mid-November.
What is the rainy season in Montgomery?
Montgomery sees its heaviest rain in May (around 4.3 inches), part of roughly 36 inches a year.
What is the warmest month in Montgomery?
July is Montgomery's warmest month, averaging about 76°F.
What is the coldest month in Montgomery?
Montgomery bottoms out in January, with a mean near 23°F.
When can I start a vegetable garden in Montgomery?
Montgomery's last frost (mid-April) cues hardy greens; in Montgomery, hold heat-lovers two weeks past.
How many rainy days does Montgomery get?
Expect roughly 170 wet days a year in Montgomery.
What hardiness zone is Montgomery?
Montgomery's USDA zone comes from its January mean (23°F); enter the ZIP on the USDA lookup for the number.
What is the 10-day forecast for Montgomery?
Montgomery's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
Will it rain this week in Montgomery?
See this week's day-by-day rain chances for Montgomery in the daily forecast above, and the next 24 hours in the hourly chart.
What is the weather like right now in Montgomery?
Current conditions for Montgomery and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
How often is the Montgomery forecast updated?
The Montgomery forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
When are sunrise and sunset in Montgomery?
Today's sunrise and sunset times for Montgomery are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
How accurate is the weather forecast for Montgomery?
The next few days in Montgomery's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.

Climate

Montgomery, Illinois occupies a warm-summer humid continental zone, with January means near 23°F and July around 76°F — a 53°F swing.

In a typical year Montgomery records about 36 inches of precipitation on around 170 days.

The 53°F gap between Montgomery's summer and winter, at 41.7°N, shapes Montgomery's frost calendar.

All cities in Illinois →

Aurora, IL weather →

ZIP codes in Montgomery

  • 60543
  • 60538
  • 60506

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.