Monthly outlook for Shem, UT: average high 99.5°, average low 79.9°. That is 1.8° above the climate normal for August. Precipitation is expected on 3 days (about 0.3 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 8 August (108.7°), the coolest 14 August (74.8°).
99.5°/79.9°
Average high / low
+1.8°
Above normal
3 / 2
Wet days / normal
0.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
99.6°
97.2°
+1.3°
18 August – 27 August
99.4°
94.7°
+2.6°
28 August – 6 September
at normal
94.6°
—
August records over 66 years
111.9°16 August 2020All-time high
54.9°23 August 1968All-time low
Climate normals and records are computed from the nearest reference point — St. George (13 mi).
Sun, 09108° / 78°0
108 °
Shem, Sunday, 9 August
Mostly clear. High 108°, low 78°.
Pressure29.85 inHg
Wind6 mph SW
Humidity24%
Visibility6.2 mi
Dew point51°
Mon, 10102° / 82°0
102 °
Shem, Monday, 10 August
Mostly clear. High 102°, low 82°.
Pressure29.88 inHg
Wind10.5 mph SW
Humidity22%
Visibility6.2 mi
Dew point51°
Tue, 1199° / 81°0.02
99 °
Shem, Tuesday, 11 August
Light rain. High 99°, low 81°.
Pressure29.91 inHg
Wind10.1 mph W
Humidity31%
Visibility6.2 mi
Dew point57°
Wed, 1297° / 76°0
97 °
Shem, Wednesday, 12 August
Overcast. High 97°, low 76°.
Pressure29.85 inHg
Wind8 mph SW
Humidity31%
Visibility6.2 mi
Dew point55°
Thu, 1396° / 78°0.03
96 °
Shem, Thursday, 13 August
Light rain. High 96°, low 78°.
Pressure29.83 inHg
Wind14 mph SW
Humidity29%
Visibility—
Dew point53°
Fri, 1494° / 75°0.1
94 °
Shem, Friday, 14 August
Light rain. High 94°, low 75°.
Pressure29.94 inHg
Wind9.8 mph SE
Humidity38%
Visibility—
Dew point56°
Sat, 1597° / 81°0
97 °
Shem, Saturday, 15 August
Clear. High 97°, low 81°.
Pressure29.97 inHg
Wind13.4 mph SW
Humidity24%
Visibility—
Dew point49°
Sun, 1698° / 81°0
98 °
Shem, Sunday, 16 August
Overcast. High 98°, low 81°.
Pressure29.97 inHg
Wind11.5 mph SW
Humidity18%
Visibility—
Dew point43°
Mon, 1797° / 81°0
97 °
Shem, Monday, 17 August
Overcast. High 97°, low 81°.
Pressure30.00 inHg
Wind11.7 mph SW
Humidity28%
Visibility—
Dew point53°
Tue, 1898° / 82°0.01
98 °
Shem, Tuesday, 18 August
Light rain. High 98°, low 82°.
Pressure29.94 inHg
Wind10.2 mph SW
Humidity25%
Visibility—
Dew point51°
Wed, 1999° / 79°0.06
99 °
Shem, Wednesday, 19 August
Light rain. High 99°, low 79°.
Pressure29.91 inHg
Wind14.6 mph SW
Humidity27%
Visibility—
Dew point52°
Thu, 2099° / 81°0
99 °
Shem, Thursday, 20 August
Mostly clear. High 99°, low 81°.
Pressure29.88 inHg
Wind10.9 mph W
Humidity23%
Visibility—
Dew point50°
Fri, 21101° / 82°0
101 °
Shem, Friday, 21 August
Mostly clear. High 101°, low 82°.
Pressure29.85 inHg
Wind11.4 mph SW
Humidity21%
Visibility—
Dew point48°
Sat, 22102° / 83°0.01
102 °
Shem, Saturday, 22 August
Light rain. High 102°, low 83°.
Pressure29.85 inHg
Wind10.4 mph SW
Humidity22%
Visibility—
Dew point50°
Sun, 2398° / 81°0.05
98 °
Shem, Sunday, 23 August
Light rain. High 98°, low 81°.
Pressure29.91 inHg
Wind8.9 mph SW
Humidity29%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2495° / 74°0.02
95 °
Shem, Monday, 24 August
Climate normal for this date — 60-year average.
Average high95°
Average low74°
Average precipitation0.02 in
Chance of precipitation8%
Record high106° (2020)
Record low57° (1968)
Tue, 2595° / 75°0.02
95 °
Shem, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high95°
Average low75°
Average precipitation0.02 in
Chance of precipitation12%
Record high107° (2020)
Record low62° (1989)
Wed, 2694° / 74°0.02
94 °
Shem, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high94°
Average low74°
Average precipitation0.02 in
Chance of precipitation12%
Record high106° (2020)
Record low64° (2024)
Thu, 2795° / 74°0.02
95 °
Shem, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high95°
Average low74°
Average precipitation0.02 in
Chance of precipitation12%
Record high107° (2017)
Record low61° (1977)
Fri, 2896° / 73°0
96 °
Shem, Friday, 28 August
Climate normal for this date — 60-year average.
Average high96°
Average low73°
Average precipitation0 in
Chance of precipitation5%
Record high107° (2017)
Record low62° (1973)
Sat, 2997° / 74°0.01
97 °
Shem, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high97°
Average low74°
Average precipitation0.01 in
Chance of precipitation2%
Record high108° (2023)
Record low63° (1964)
Sun, 3096° / 75°0.02
96 °
Shem, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high96°
Average low75°
Average precipitation0.02 in
Chance of precipitation5%
Record high107° (2022)
Record low64° (2000)
Mon, 3195° / 74°0.04
95 °
Shem, Monday, 31 August
Climate normal for this date — 60-year average.
Average high95°
Average low74°
Average precipitation0.04 in
Chance of precipitation15%
Record high107° (2022)
Record low59° (1962)
Tue, 0194° / 73°0.03
94 °
Shem, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0.03 in
Chance of precipitation18%
Record high109° (2022)
Record low59° (1966)
Wed, 0294° / 73°0
94 °
Shem, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high94°
Average low73°
Average precipitation0 in
Chance of precipitation2%
Record high110° (2022)
Record low55° (2008)
Thu, 0395° / 73°0.01
95 °
Shem, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high95°
Average low73°
Average precipitation0.01 in
Chance of precipitation3%
Record high108° (2022)
Record low56° (1973)
Fri, 0494° / 72°0.03
94 °
Shem, Friday, 4 September
Climate normal for this date — 60-year average.
Average high94°
Average low72°
Average precipitation0.03 in
Chance of precipitation13%
Record high108° (2020)
Record low55° (1971)
Sat, 0593° / 72°0.04
93 °
Shem, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high93°
Average low72°
Average precipitation0.04 in
Chance of precipitation15%
Record high110° (2020)
Record low59° (1961)
Sun, 0692° / 71°0.05
92 °
Shem, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high92°
Average low71°
Average precipitation0.05 in
Chance of precipitation17%
Record high114° (2022)
Record low56° (1970)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Shem, UT are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Shem, UT since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.