August/September Discussion August 15th brought peak heat of the month for northern Arkansas. The heat was forced just-ahead of an approaching cold front which settles south of Arkansas the next 7-10 days and focuses a heavy rain episode for Texas to southern Arkansas while in that rain zone and just-north temperatures trend much cooler. Extreme heat weather is gone in Arkansas. The cooler trend also includes September as CDD forecasts are cutback. Unusual heat is not expected in September. Cooling Degree Forecast Fort Smith, AR   June July August September 2022 Forecast 472 (OBS) 730 (OBS) 565 324 Previous 8/1     565 348 10-YR NML 462 574 527 373 30-YR NML 423 568 547 313 2021 429 525 584 408 2020 452 595 463 266 Peak Day 6/25 (100/78) 7/19 (108/79) 7/27 (106/82) 8/16 (104/77)   Table 1: Climate Impact Company monthly CDD forecast for Fort Smith, AR. Fayetteville, AR   June July August September 2022 Forecast 350 (OBS) 599 (OBS) 412 195 Previous 8/1     405 219 10-YR NML 303 404 356 214 30-YR NML 280 409 390 178 2021 323 382 438 273 2020 328 443 327 169 Peak Day 6/25 (96/76) 7/26 (104/81) 8/15 (97/66)   Table 2: Climate Impact Company monthly CDD forecast for Fayetteville, AR. Jonesboro, AR   June July August September 2022 Forecast 467 (OBS) 615 (OBS) 390 245 Previous 8/1     414 270 10-YR NML 356 456 380 270 30-YR NML 356 449 421 235 2021 343 446 424 241 2020 328 500 385 217 Peak Day 6/22 (101/76) 7/8 (102/81) 8/7 (92/74)     Table 3: Climate Impact Company monthly CDD forecast for Jonesboro, AR. Little Rock, AR   June July August September 2022 Forecast 480 (OBS) 675 (OBS) 540 335 Previous 8/1     553 360 10-YR NML 437 549 515 365 30-YR NML 436 557 540 325 2021 416 515 552 350 2020 382 546 480 266 Peak Day 6/22 (100/76) 7/9 (102/81) 7/26 (103/80) 8/15 (104/75)   Table 4: Climate Impact Company monthly CDD forecast for Little Rock, AR.    

Highlight: Incoming thunderstorms eases hot weather. Pattern that follows stays wet. Houston, TX… Yesterday: 99/74 WED: Mostly sunny. High 101. Low 77. THU: Gusty thunderstorms, severe weather possible. High 100. Low 75. FRI: Thunderstorms. High 93. Low 75. SAT: Chance of a thunderstorm. High 94. Low 75. SUN: Chance of a thundershower. High 95. Low 76. Days 6-10: +1.0. 120% of normal precipitation. Days 11-15: +1.0. 120% of normal precipitation. Normal: High 95. Low 76. Beaumont, TX… Yesterday: 94/74 WED: Mostly sunny. High 97. Low 75. THU: Gusty thunderstorms, severe weather possible. High 89. Low 73. FRI: Thunderstorms. High 84. Low 73. SAT: More thundershowers. High 87. Low 74. SUN: Chance of a thundershower. High 89. Low 75. Days 6-10: +1.0. 120% of normal precipitation. Days 11-15: +0.5. 120% of normal precipitation. Normal: High 93. Low 75. Baton Rouge, LA… Yesterday: 94/77 WED: Partly cloudy, chance of a thundershower. High 96. Low 75. THU: Gusty thunderstorms. High 91. Low 73. FRI: Thunderstorms. High 87. Low 73. SAT: More thundershowers. High 90. Low 73. SUN: Thundershowers. High 91. Low 74. Days 6-10: +1.0. 120% of normal precipitation. Days 11-15: -0.5. 120% of normal precipitation. Normal: High 92. Low 73. New Orleans, LA… Yesterday: 95/79 WED: Partly cloudy, chance of a thundershower. High 95. Low 76. THU: Thundershowers. High 91. Low 74. FRI: Thunderstorms. High 87. Low 75. SAT: More thundershowers. High 89. Low 76. SUN: Thundershowers. High 90. Low 76. Days 6-10: +1.0. 110% of normal precipitation. Days 11-15: 0.0. 120% of normal precipitation. Normal: High 91. Low 77. Corpus Christ, TX… Yesterday: N/A WED: Sunny. High 93. Low 74. THU: Mostly sunny. High 93. Low 74. FRI: Partly cloudy. High 93. Low 75. SAT: Chance of a thundershower. High 92. Low 75. SUN: Chance of thundershowers. High 92. Low 75. Days 6-10: +1.0. 110% of normal precipitation. Days 11-15: +1.0. 110% of normal precipitation. Normal: High 95. Low 76. Little Rock, AR… Yesterday: 93/74 WED: Heavy thunderstorms. High 79. Low 66. THU: Clearing. High 87. Low 66. FRI: Mostly sunny. High 90. Low 69. SAT: Increasing clouds. High 93. Low 73. SUN: Heavy thunderstorms. High 86. Low 70. Days 6-10: -2.0. 150% of normal precipitation. Days 11-15: -2.0. 120% of normal precipitation. Normal: High 92. Low 70.

Highlight: August and September forecast is updated! August/September Discussion Fort Smith peak of month is tomorrow with a 103F maximum temperature. Similarly, Fayetteville peak of month is tomorrow at 98F. The peak of month occurs just before a cold front brings showers and thunderstorms midweek. Both locations are revised higher by a bout 10 CDD from the previous forecast. Jonesboro peak was earlier in the month at 92F. The less hot/cooler regime arrives earlier at this location. In Little Rock, the peak of month is today at 100F. The Jonesboro and Little Rock CDD for August was adjusted slightly higher. The September 2022 CDD forecast remains somewhat warmer than normal but is cut slightly from the previous forecast. The September peak will be added in the Thursday update. Cooling Degree Forecast Fort Smith, AR   June July August September 2022 Forecast 472 (OBS) 730 (OBS) 565 348 Previous 8/1     555 361 10-YR NML 462 574 527 373 30-YR NML 423 568 547 313 2021 429 525 584 408 2020 452 595 463 266 Peak Day 6/25 (100/78) 7/19 (108/79) 7/27 (106/82) 8/16 (103/78)   Table 1: Climate Impact Company monthly CDD forecast for Fort Smith, AR. Fayetteville, AR   June July August September 2022 Forecast 350 (OBS) 599 (OBS) 405 219 Previous 8/1     395 224 10-YR NML 303 404 356 214 30-YR NML 280 409 390 178 2021 323 382 438 273 2020 328 443 327 169 Peak Day 6/25 (96/76) 7/26 (104/81) 8/16 (98/73)   Table 2: Climate Impact Company monthly CDD forecast for Fayetteville, AR. Jonesboro, AR   June July August September 2022 Forecast 467 (OBS) 615 (OBS) 414 270 Previous 8/1     402 279 10-YR NML 356 456 380 270 30-YR NML 356 449 421 235 2021 343 446 424 241 2020 328 500 385 217 Peak Day 6/22 (101/76) 7/8 (102/81) 8/7 (92/74)     Table 3: Climate Impact Company monthly CDD forecast for Jonesboro, AR. Little Rock, AR   June July August September 2022 Forecast 480 (OBS) 675 (OBS) 553 360 Previous 8/1     545 369 10-YR NML 437 549 515 365 30-YR NML 436 557 540 325 2021 416 515 552 350 2020 382 546 480 266 Peak Day 6/22 (100/76) 7/9 (102/81) 7/26 (103/80) 8/15 (100/75)   Table 4: Climate Impact Company monthly CDD forecast for Little Rock, AR.