Heat Index Forecast Tables
Issued by NWS
Issued by NWS
824
FMUS24 KWNH 181819
PRBWHL
DAYS 3--7 HEAT INDEX FORECAST TABLES
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
1816 UTC TUE AUG 18 2026
MINIMUM HEAT INDEX (DEG F) AND MINIMUM HI PROB (%) FRCSTS
AT WESTERN US CITIES - DAYS 3 TO 7 FROM TUE AUG 18 2026
ABILENE_TX ALBUQUERQUE_NM
ABI 0821 0822 0823 0824 0825 ABQ 0821 0822 0823 0824 0825
MIN 79 78 79 79 78 MIN 64 65 65 66 65
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 3 3 5 5 2 %>85 0 0 0 0 0
%>80 37 32 39 42 31 %>80 0 0 0 0 0
%>75 84 81 83 85 80 %>75 1 2 4 4 4
%>70 98 97 97 98 98 %>70 10 15 18 20 20
AMARILLO_TX AUSTIN_TX
AMA 0821 0822 0823 0824 0825 AUS 0821 0822 0823 0824 0825
MIN 70 71 73 74 73 MIN 80 82 80 80 79
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 1 0 0 0
%>85 0 0 0 0 0 %>85 5 15 10 8 2
%>80 1 2 6 8 4 %>80 51 69 54 50 35
%>75 12 18 32 43 29 %>75 98 98 94 95 92
%>70 50 58 72 86 75 %>70 100 100 100 100 100
BATON_ROUGE_LA BISMARCK_ND
BTR 0821 0822 0823 0824 0825 BIS 0821 0822 0823 0824 0825
MIN 78 78 78 78 78 MIN 57 54 59 60 58
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 1 1 1 2 2 %>90 0 0 0 0 0
%>85 8 11 7 12 12 %>85 0 0 0 0 0
%>80 37 39 32 38 39 %>80 0 0 0 0 0
%>75 77 75 70 72 74 %>75 0 0 1 0 0
%>70 96 95 93 93 94 %>70 0 0 5 3 2
BROWNSVILLE_TX CORPUS_CHRISTI_TX
BRO 0821 0822 0823 0824 0825 CRP 0821 0822 0823 0824 0825
MIN 89 85 83 85 86 MIN 84 81 81 82 83
%>100 0 0 0 0 0 %>100 1 0 0 0 1
%>95 2 0 0 0 0 %>95 5 2 2 2 3
%>90 42 6 2 5 7 %>90 14 8 6 9 10
%>85 93 52 32 51 62 %>85 41 23 20 28 33
%>80 100 92 85 94 98 %>80 75 58 53 64 70
%>75 100 100 99 100 100 %>75 94 89 87 91 94
%>70 100 100 100 100 100 %>70 99 99 99 99 99
DALLAS_TX DENVER_CO
DFW 0821 0822 0823 0824 0825 DEN 0821 0822 0823 0824 0825
MIN 84 83 83 84 84 MIN 62 64 64 62 61
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 1 0 %>95 0 0 0 0 0
%>90 5 4 6 8 7 %>90 0 0 0 0 0
%>85 44 35 35 43 42 %>85 0 0 0 0 0
%>80 90 83 79 85 85 %>80 0 0 0 0 0
%>75 99 97 97 99 99 %>75 0 0 1 0 0
%>70 100 100 99 100 100 %>70 3 5 7 4 2
DES_MOINES_IA EL_PASO_TX
DSM 0821 0822 0823 0824 0825 ELP 0821 0822 0823 0824 0825
MIN 66 66 62 64 66 MIN 73 74 74 73 73
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 1 0 0 1 1
%>80 0 0 0 0 0 %>80 10 7 7 9 10
%>75 0 0 0 1 2 %>75 37 38 38 37 37
%>70 12 9 3 11 17 %>70 74 81 81 75 73
FRESNO_CA GOODLAND_KS
FAT 0821 0822 0823 0824 0825 GLD 0821 0822 0823 0824 0825
MIN 68 67 66 66 65 MIN 63 64 65 65 64
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 0 %>80 0 0 1 1 1
%>75 4 2 3 1 1 %>75 3 4 6 5 4
%>70 35 24 22 20 12 %>70 15 16 23 21 17
GREAT_FALLS_MT HOUSTON_TX
GTF 0821 0822 0823 0824 0825 HOU 0821 0822 0823 0824 0825
MIN 53 58 55 51 53 MIN 84 84 83 83 83
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 2 2 1 1 1
%>90 0 0 0 0 0 %>90 14 14 7 7 7
%>85 0 0 0 0 0 %>85 40 45 37 33 33
%>80 0 0 0 0 0 %>80 81 80 78 69 69
%>75 0 1 0 0 0 %>75 98 96 96 93 92
%>70 0 4 1 0 1 %>70 100 99 100 99 99
JACKSON_MS KANSAS_CITY_MO
JAN 0821 0822 0823 0824 0825 MCI 0821 0822 0823 0824 0825
MIN 77 75 74 75 76 MIN 68 70 68 70 71
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 1 0 0 0 1 %>90 0 0 0 0 0
%>85 8 4 1 3 7 %>85 0 0 0 2 0
%>80 30 19 8 17 26 %>80 0 0 0 8 5
%>75 65 52 38 50 58 %>75 1 5 6 24 23
%>70 90 83 79 84 85 %>70 26 45 34 51 59
LAS_VEGAS_NV LITTLE_ROCK_AR
LAS 0821 0822 0823 0824 0825 LIT 0821 0822 0823 0824 0825
MIN 83 82 81 80 79 MIN 75 74 74 75 77
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 3 2 1 2 2 %>95 0 0 0 0 0
%>90 13 10 8 8 7 %>90 0 0 0 0 2
%>85 37 31 26 25 21 %>85 4 1 1 4 9
%>80 69 62 55 52 46 %>80 20 11 8 18 30
%>75 91 87 82 78 72 %>75 53 42 40 50 60
%>70 99 97 95 93 90 %>70 84 79 81 81 85
LOS_ANGELES_CA MIDLAND_TX
LAX 0821 0822 0823 0824 0825 MAF 0821 0822 0823 0824 0825
MIN 70 69 69 68 68 MIN 75 74 75 75 75
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 1 %>80 5 5 9 10 6
%>75 6 7 6 5 7 %>75 47 44 49 52 47
%>70 45 44 41 34 34 %>70 93 90 90 92 93
MINNEAPOLIS_MN NEW_ORLEANS_LA
MSP 0821 0822 0823 0824 0825 MSY 0821 0822 0823 0824 0825
MIN 64 62 59 61 65 MIN 84 85 84 85 85
%>100 0 0 0 0 0 %>100 1 1 1 1 1
%>95 0 0 0 0 0 %>95 4 4 4 6 6
%>90 0 0 0 0 0 %>90 17 20 18 23 22
%>85 0 0 0 0 0 %>85 45 50 46 52 51
%>80 0 0 0 0 0 %>80 75 78 76 78 79
%>75 0 0 0 1 2 %>75 93 93 93 93 93
%>70 4 0 0 5 14 %>70 99 98 98 98 98
NORTH_PLATTE_NE OKLAHOMA_CITY_OK
LBF 0821 0822 0823 0824 0825 OKC 0821 0822 0823 0824 0825
MIN 63 63 65 65 64 MIN 75 76 77 80 79
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 1 1 3 1
%>85 0 0 0 0 0 %>85 3 6 9 19 13
%>80 0 0 0 0 0 %>80 18 24 32 53 47
%>75 1 0 2 2 2 %>75 51 56 65 82 80
%>70 7 6 15 15 13 %>70 83 84 88 96 95
OMAHA_NE PENDLETON_OR
OMA 0821 0822 0823 0824 0825 PDT 0821 0822 0823 0824 0825
MIN 67 67 65 66 68 MIN 60 59 51 52 56
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 1 0 %>80 1 1 0 0 0
%>75 1 1 2 6 3 %>75 4 3 0 0 2
%>70 21 17 13 26 27 %>70 12 8 0 1 5
PHOENIX_AZ PORTLAND_OR
PHX 0821 0822 0823 0824 0825 PDX 0821 0822 0823 0824 0825
MIN 87 88 87 87 87 MIN 59 56 55 56 57
%>100 0 1 0 1 1 %>100 0 0 0 0 0
%>95 3 7 5 8 7 %>95 0 0 0 0 0
%>90 26 31 25 29 27 %>90 0 0 0 0 0
%>85 73 70 62 62 61 %>85 0 0 0 0 0
%>80 97 94 90 88 88 %>80 0 0 0 0 0
%>75 100 100 99 98 98 %>75 0 0 0 0 0
%>70 100 100 100 100 100 %>70 0 0 0 0 0
RAPID_CITY_SD SACRAMENTO_CA
RAP 0821 0822 0823 0824 0825 SAC 0821 0822 0823 0824 0825
MIN 61 62 65 64 62 MIN 60 59 58 59 58
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 0
%>75 0 0 4 2 1 %>75 0 0 0 0 0
%>70 3 5 17 11 7 %>70 1 0 1 1 0
SAINT_LOUIS_MO SALT_LAKE_CITY_UT
STL 0821 0822 0823 0824 0825 SLC 0821 0822 0823 0824 0825
MIN 67 69 66 67 70 MIN 71 69 66 65 65
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 4 %>80 3 1 0 0 0
%>75 1 1 1 4 18 %>75 22 12 1 1 0
%>70 18 34 18 24 47 %>70 62 46 17 10 9
SAN_ANTONIO_TX SAN_DIEGO_CA
SAT 0821 0822 0823 0824 0825 SAN 0821 0822 0823 0824 0825
MIN 79 79 79 78 78 MIN 70 70 70 70 70
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 2 8 5 2 2 %>85 0 0 0 0 0
%>80 33 41 35 31 30 %>80 0 0 0 0 0
%>75 90 85 83 86 84 %>75 5 4 5 5 5
%>70 100 99 99 100 100 %>70 54 53 59 53 47
SAN_FRANCISCO_CA SEATTLE_WA
SFO 0821 0822 0823 0824 0825 SEA 0821 0822 0823 0824 0825
MIN 57 57 56 57 57 MIN 58 57 56 55 56
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 0 0 0 0
%>85 0 0 0 0 0 %>85 0 0 0 0 0
%>80 0 0 0 0 0 %>80 0 0 0 0 0
%>75 0 0 0 0 0 %>75 0 0 0 0 0
%>70 0 0 0 0 0 %>70 0 0 0 0 0
SHREVEPORT_LA SIOUX_FALLS_SD
SHV 0821 0822 0823 0824 0825 FSD 0821 0822 0823 0824 0825
MIN 81 78 78 79 79 MIN 62 60 59 62 64
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 3 1 0 1 2 %>90 0 0 0 0 0
%>85 22 8 4 11 13 %>85 0 0 0 0 0
%>80 63 35 29 42 45 %>80 0 0 0 0 0
%>75 91 73 72 79 81 %>75 0 0 0 0 0
%>70 99 94 96 97 97 %>70 1 1 3 4 7
SPRINGFIELD_MO TUCSON_AZ
SGF 0821 0822 0823 0824 0825 TUS 0821 0822 0823 0824 0825
MIN 69 69 70 71 73 MIN 76 77 77 76 76
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 0 0 %>90 0 1 0 0 1
%>85 0 0 0 3 2 %>85 3 8 5 4 5
%>80 0 0 1 11 13 %>80 21 31 27 23 24
%>75 4 7 11 30 39 %>75 58 66 64 60 59
%>70 40 45 46 58 72 %>70 87 90 91 89 88
TULSA_OK WICHITA_KS
TUL 0821 0822 0823 0824 0825 ICT 0821 0822 0823 0824 0825
MIN 75 76 77 80 80 MIN 70 72 73 76 74
%>100 0 0 0 0 0 %>100 0 0 0 0 0
%>95 0 0 0 0 0 %>95 0 0 0 0 0
%>90 0 0 0 4 2 %>90 0 0 0 2 0
%>85 1 2 5 21 16 %>85 0 0 3 8 2
%>80 12 17 25 54 50 %>80 1 4 13 26 14
%>75 49 55 62 84 84 %>75 13 27 39 54 46
%>70 87 89 90 97 98 %>70 52 70 70 80 81
YUMA_AZ
YUM 0821 0822 0823 0824 0825
MIN 88 87 87 90 89
%>100 0 0 0 2 0
%>95 2 0 3 14 7
%>90 30 17 23 53 37
%>85 86 78 70 89 81
%>80 99 99 96 99 98
%>75 100 100 100 100 100
%>70 100 100 100 100 100
URL IS WWW.WPC.NCEP.NOAA.GOV
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