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Current Conditions

A message from COD Meteorology

Current Local Radar

Temperature
39°F
Feels Like:
35°F
Dew Point	Humidity
30°F	70%

Fair

Wind Strength
Light	Moderate	Strong
West at 5 mph

Local Graphical Forecast (Updated: 11/12/25 8:25 pm)

Wednesday (11/12)
Day	Night


High	Low
	34

Thursday (11/13)
Day	Night


High	Low
56	38

Friday (11/14)
Day	Night


High	Low
62	50

Saturday (11/15)
Day	Night


High	Low
67	38

Sunday (11/16)
Day	Night


High	Low
50	31

Monday (11/17)
Day	Night

	30%
High	Low
47	35

Tuesday (11/18)
Day	Night

30%
High	Low
49	35

Detailed Text Forecast (Updated: 11/12/25 8:25 pm)

Wednesday Night: Partly cloudy, with a low around 34. West northwest wind 5 to 10 mph.

Thursday: Mostly sunny, with a high near 56. West northwest wind around 5 mph becoming south southwest in the afternoon.

Thursday Night: Partly cloudy, with a low around 38. South wind around 5 mph.

Friday: Sunny, with a high near 62. South wind around 5 mph, with gusts as high as 10 mph.

Friday Night: Partly cloudy, with a low around 50. South wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday: Partly sunny, with a high near 67.

Saturday Night: Partly cloudy, with a low around 38.

Sunday: Sunny, with a high near 50.

Sunday Night: Mostly clear, with a low around 31.

Monday: Mostly sunny, with a high near 47.

Monday Night: A chance of rain. Mostly cloudy, with a low around 35.

Tuesday: A chance of rain. Partly sunny, with a high near 49.

Tuesday Night: Mostly cloudy, with a low around 35.

Wednesday: Partly sunny, with a high near 48.

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SPC Convective Outlook Day 2

See Product Description

576
ACUS02 KWNS 121649
SWODY2
SPC AC 121648

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1048 AM CST Wed Nov 12 2025

Valid 131200Z - 141200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
The risk for thunderstorms appears negligible across much of the
U.S. Thursday through Thursday night.

...Discussion...
With a blocking high likely to be maintained near/offshore of the
Greenland Atlantic coast, there likely will be little change to the
large-scale pattern across eastern North America into the Atlantic
through this period. Upstream, flow is forecast to remain more
progressive, at least across the northern mid-latitudes of the
Pacific into North America.

Within the latter regime, models continue to indicate that the
northern portion of a splitting trough will advance inland of the
British Columbia and adjacent Pacific Northwest coast, providing
support for significant surface cyclogenesis across the Canadian
Prairies Thursday through Thursday night. Some deepening of surface
troughing to the lee of the Rockies appears possible as far south as
southern portions of the high plains. However, guidance suggests
that boundary-layer modification across the northwestern Gulf Basin
is not likely to yield a sufficiently moist return flow to support
destabilization conducive to thunderstorm development, beneath a
warming mid-level environment across the southern Rockies through
Great Plains.

Across the southern mid-latitudes of the eastern Pacific, there
remains more notable spread within/among the model output concerning
the evolution of smaller-scale developments within the southern
portion of the splitting mid/upper troughing. However, it still
appears that an initially deep associated surface cyclone will
undergo rapid weakening offshore of the southern Oregon/northern
California coast, while the gradually warming mid-level cold core
continues to dig well offshore of the central/southern California
coast.

...California...
With the modifying and increasingly modest mid-level cold core
forecast to dig offshore, the development of thermodynamic profiles
potentially conducive to an appreciable risk for convection capable
of producing lightning (i.e., 10 percent or greater probabilities)
remains unclear. However, high resolution, convection allowing
ensemble output and related guidance suggest at least minimal,
though diminishing, probabilities for a few pre-frontal
thunderstorms may be maintained across and just inland of the
northern/central California coast at the outset of the period.

Despite the modest mid-level cooling, a narrow plume of better
low-level moisture return ahead of the occluding, inland advancing
frontal zone may contribute to weak CAPE and thermodynamic profiles
marginally conducive to charge separation in the more vigorous
convective development. Given the modest to weak mid/upper forcing
for ascent, and elevated nature of the potentially unstable
low-level moisture return above at least a shallow residual surface
stable layer across the interior valleys, HREF calibrated
thunderstorm probabilities appear overdone for Thursday afternoon
into Thursday night. However, orographic forcing, aided by strong
southerly to southwesterly low-level flow impinging on the higher
terrain of the Siskiyous/Mount Shasta vicinity into the Sierra
Nevada, might contribute to convective development occasionally
becoming capable of producing lightning, perhaps most concentrated
west/northwest of Lake Tahoe into the Yosemite vicinity.

..Kerr.. 11/12/2025

$$

The "Convective Outlooks" issued by SPC can be thought of as a detailed discussion of the Severe Thunderstorm threat and it's associated risks nationwide. Risk levels range from Marginal to Slight, Enhanced, Moderate, and High and are issued based on the likelihood of 3 major severe weather threats; the risk of tornadoes, damaging winds, and hail. These discussions are often heavily laced meteorological terminology that may be difficult to understand without a background in the field. However understanding these discussions shouldn't be thought of as necessary. Instead, should DuPage county fall under one of these threat levels for severe weather, the response should be to have a heightened level of awareness about the deveoloping weather. Keep an eye on the "Watch County Notification" for any active severe weather watches issued for DuPage county; the "Hazardous Weather Outlook" and "Severe Weather Statement" can also be helpful in explaining the developing risk; additionally, watch for "Active Weather Warnings" and keep an eye on our "Regional Satellite and Radar" products which can be viewed with active watches/warnings or lightning activity.

SPC Convective Outlook Day 3

See Product Description

717
ACUS03 KWNS 121856
SWODY3
SPC AC 121856

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
1256 PM CST Wed Nov 12 2025

Valid 141200Z - 151200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
The risk for thunderstorms appears negligible across the U.S. Friday
through Friday night.

...Discussion...
As blocking mid/upper ridging remains centered offshore of
southeastern Greenland, models indicate that a broad cyclonic regime
will be maintained to its southwest, centered near the Canadian
Maritimes. Some amplification of large-scale troughing extending
southward offshore of the remainder of the North American Atlantic
coast is forecast, downstream of a significant mid-level trough and
embedded cyclone migrating northeast and east of the Canadian
Prairies, on the leading edge of a more progressive regime.

Upstream, ridging ahead of another short wave trough appears likely
to spread across and inland of the British Columbia/adjacent Pacific
Northwest coast, to the north of an increasingly cut-off low
centered offshore of the central/southern California coast.

...Southern California...
Models indicate that the modifying mid-level cold core (including
coldest 500 mb temperatures warming above -24 C) will generally
remain offshore through this period, tending to pivot away from
central coastal areas while perhaps slowly toward southern coastal
areas late Friday night. While a corridor of continued
low/mid-level moistening along a slow moving, occluded frontal zone
may compensate and contribute to layers of weak conditional
instability inland of southern California coastal into the southern
Sierra Nevada/Mojave Desert vicinity, 10 percent or greater
probabilities for thunderstorms appear generally focused offshore.
Forcing for ascent associated with a weak developing frontal wave
late Friday night might provide support for the best potential for
thunderstorm development closest to coastal areas.

..Kerr.. 11/12/2025

$$

The "Convective Outlooks" issued by SPC can be thought of as a detailed discussion of the Severe Thunderstorm threat and it's associated risks nationwide. Risk levels range from Marginal to Slight, Enhanced, Moderate, and High and are issued based on the likelihood of 3 major severe weather threats; the risk of tornadoes, damaging winds, and hail. These discussions are often heavily laced meteorological terminology that may be difficult to understand without a background in the field. However understanding these discussions shouldn't be thought of as necessary. Instead, should DuPage county fall under one of these threat levels for severe weather, the response should be to have a heightened level of awareness about the deveoloping weather. Keep an eye on the "Watch County Notification" for any active severe weather watches issued for DuPage county; the "Hazardous Weather Outlook" and "Severe Weather Statement" can also be helpful in explaining the developing risk; additionally, watch for "Active Weather Warnings" and keep an eye on our "Regional Satellite and Radar" products which can be viewed with active watches/warnings or lightning activity.