ILZ084-162100-
Jackson-
Including the cities of Carbondale and Murphysboro
1237 PM CDT Sun Aug 16 2026


...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING...


.THIS AFTERNOON...Mostly sunny with a slight chance of showers
and thunderstorms. Hot. Near steady temperature in the mid 90s.
West winds around 5 mph. Chance of rain 20 percent. Highest heat
index readings heat index readings up to 109.

.TONIGHT...Mostly cloudy with a chance of showers and
thunderstorms. Some thunderstorms may produce damaging winds.
Humid with lows in the lower 70s. Southwest winds around 5 mph,
becoming north after midnight. Chance of rain 50 percent.

.MONDAY...Partly sunny. Highs in the upper 80s. Northwest winds
5 to 10 mph.

.MONDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 60s. North winds 5 to 10 mph in the
evening, becoming light and variable.

.TUESDAY...Sunny. Highs around 90. Calm winds.

.TUESDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows around 70.

.WEDNESDAY...A chance of showers in the morning. Mostly sunny.
Highs in the lower 90s. Chance of rain 50 percent.

.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of thunderstorms. A chance of showers in
the evening, then showers likely after midnight. Lows in the
upper 60s. Chance of rain 60 percent.

.THURSDAY...Partly sunny. A chance of showers and thunderstorms
in the morning. Highs in the mid 80s. Chance of rain 40 percent.

.THURSDAY NIGHT...Partly cloudy with a chance of showers. Lows in
the mid 60s. Chance of rain 30 percent.

.FRIDAY...Mostly sunny. Highs in the mid 80s.

.FRIDAY NIGHT...Mostly clear. Lows in the mid 60s.

.SATURDAY...Mostly sunny. Highs in the mid 80s.

ILZ084-162100-
CARBONDALE-JACKSON IL
37.77N  89.25W Elev. 430 ft
1237 PM CDT Sun Aug 16 2026

Date             Sun 08/16/26            Mon 08/17/26            Tue 08/18/26
CDT 3hrly     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      98          72          88          66          91
Temp                   94 95 92 82 79 76 73 80 84 86 83 75 72 69 67 80 87 90 86
Dewpt                  75 76 77 76 76 75 73 73 71 69 68 71 70 68 67 70 69 69 71
RH                     54 54 62 82 91 97100 79 65 57 61 87 93 97100 72 55 50 61
Wind dir                W  W SW  E NE  N  N NW  N  N  N  N  N  N  N  N  W NW  E
Wind spd                5  4  2  1  1  2  3  6  9 10  6  2  0  0  0  0  1  1  1
Clouds                 B1 SC SC B1 B2 OV B1 B1 SC SC FW SC FW FW FW FW FW FW FW
PoP 12hr                     20          40          30           0           0
QPF 12hr                   0.06        0.05           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S  C  C  C  C  S
Tstms                   S  S  C  C  C  C  S
Heat index            106108106 89 83       84 89 90 86             83 91 95 91
Max heat              106   111   102          89    91    85          91    96


Date          Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
CDT 6hrly     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Min/Max          70    92      69    85      65    85      65    87
Temp          74 71 89 86   73 70 82 80   70 66 82 80   69 65 84 82
Dewpt         70 70 73 73   72 69 70 70   67 65 68 69   67 65 67 69
PWind dir        SE     S      NE    NE      NE     N       N     N
Wind char        LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC SC SC   SC B1 B1 B1   SC SC SC SC   FW FW SC FW
PoP 12hr         20    40      60    40      30    20      10     5
Rain shwrs        S  C  S    C  L  C  S    C  C  S  S
Tstms             S  S  S    C  C  C  S    S        S