Monthly outlook for Lewis, UT: average high 92.2°, average low 68.5°. That is 3.6° above the climate normal for August. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 2 days and 0.3 inches. The warmest day looks like 10 August (98°), the coolest 14 August (64°).
92.2°/68.5°
Average high / low
+3.6°
Above normal
4 / 2
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
92.4°
86.6°
+3.3°
18 August – 27 August
91.8°
84.3°
+4.2°
28 August – 6 September
at normal
82.7°
—
August records over 66 years
98.4°1 August 2000All-time high
46.9°23 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Provo (11 mi).
Sun, 0996° / 70°0
96 °
Lewis, Sunday, 9 August
Light rain. High 96°, low 70°.
Pressure29.88 inHg
Wind4.5 mph NW
Humidity26%
Visibility6.2 mi
Dew point46°
Mon, 1098° / 70°0.01
98 °
Lewis, Monday, 10 August
Light rain. High 98°, low 70°.
Pressure29.85 inHg
Wind6.3 mph NW
Humidity27%
Visibility6.2 mi
Dew point47°
Tue, 1196° / 70°0
96 °
Lewis, Tuesday, 11 August
Light rain. High 96°, low 70°.
Pressure29.88 inHg
Wind5.6 mph NW
Humidity25%
Visibility6.2 mi
Dew point45°
Wed, 1293° / 72°0
93 °
Lewis, Wednesday, 12 August
Overcast. High 93°, low 72°.
Pressure29.80 inHg
Wind5.4 mph NW
Humidity29%
Visibility6.2 mi
Dew point48°
Thu, 1386° / 66°0.19
86 °
Lewis, Thursday, 13 August
Light rain. High 86°, low 66°.
Pressure29.77 inHg
Wind16.2 mph SE
Humidity31%
Visibility—
Dew point50°
Fri, 1485° / 64°0.02
85 °
Lewis, Friday, 14 August
Light rain. High 85°, low 64°.
Pressure29.97 inHg
Wind6.7 mph N
Humidity43%
Visibility—
Dew point53°
Sat, 1586° / 68°0.03
86 °
Lewis, Saturday, 15 August
Light rain. High 86°, low 68°.
Pressure30.03 inHg
Wind5.5 mph NW
Humidity35%
Visibility—
Dew point51°
Sun, 1692° / 67°0
92 °
Lewis, Sunday, 16 August
Clear. High 92°, low 67°.
Pressure30.03 inHg
Wind7.8 mph W
Humidity29%
Visibility—
Dew point47°
Mon, 1794° / 67°0.01
94 °
Lewis, Monday, 17 August
Light rain. High 94°, low 67°.
Pressure30.00 inHg
Wind11.8 mph W
Humidity27%
Visibility—
Dew point46°
Tue, 1896° / 71°0
96 °
Lewis, Tuesday, 18 August
Partly cloudy. High 96°, low 71°.
Pressure29.94 inHg
Wind17.1 mph W
Humidity23%
Visibility—
Dew point46°
Wed, 1991° / 69°0.07
91 °
Lewis, Wednesday, 19 August
Light rain. High 91°, low 69°.
Pressure29.94 inHg
Wind8.7 mph NW
Humidity33%
Visibility—
Dew point50°
Thu, 2091° / 67°0.08
91 °
Lewis, Thursday, 20 August
Light rain. High 91°, low 67°.
Pressure29.91 inHg
Wind10.2 mph NE
Humidity38%
Visibility—
Dew point53°
Fri, 2189° / 65°0.08
89 °
Lewis, Friday, 21 August
Light rain. High 89°, low 65°.
Pressure29.91 inHg
Wind16.1 mph NW
Humidity48%
Visibility—
Dew point55°
Sat, 2292° / 69°0
92 °
Lewis, Saturday, 22 August
Light rain. High 92°, low 69°.
Pressure29.88 inHg
Wind13.6 mph NE
Humidity29%
Visibility—
Dew point47°
Sun, 2393° / 70°0.01
93 °
Lewis, Sunday, 23 August
Light rain. High 93°, low 70°.
Pressure29.85 inHg
Wind14.5 mph SE
Humidity29%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2484° / 62°0.02
84 °
Lewis, Monday, 24 August
Climate normal for this date — 60-year average.
Average high84°
Average low62°
Average precipitation0.02 in
Chance of precipitation8%
Record high95° (2011)
Record low48° (1968)
Tue, 2585° / 62°0.02
85 °
Lewis, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low62°
Average precipitation0.02 in
Chance of precipitation10%
Record high94° (2011)
Record low49° (1989)
Wed, 2684° / 63°0.02
84 °
Lewis, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low63°
Average precipitation0.02 in
Chance of precipitation12%
Record high94° (2020)
Record low50° (2024)
Thu, 2783° / 62°0.02
83 °
Lewis, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low62°
Average precipitation0.02 in
Chance of precipitation12%
Record high94° (2020)
Record low50° (1977)
Fri, 2884° / 62°0.01
84 °
Lewis, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low62°
Average precipitation0.01 in
Chance of precipitation3%
Record high92° (2017)
Record low50° (2004)
Sat, 2985° / 62°0.01
85 °
Lewis, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low62°
Average precipitation0.01 in
Chance of precipitation5%
Record high93° (2023)
Record low48° (1964)
Sun, 3085° / 62°0.01
85 °
Lewis, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low62°
Average precipitation0.01 in
Chance of precipitation5%
Record high93° (2022)
Record low47° (1964)
Mon, 3183° / 62°0.01
83 °
Lewis, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low62°
Average precipitation0.01 in
Chance of precipitation8%
Record high94° (2022)
Record low51° (1962)
Tue, 0182° / 61°0.04
82 °
Lewis, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high82°
Average low61°
Average precipitation0.04 in
Chance of precipitation15%
Record high94° (2022)
Record low46° (1973)
Wed, 0282° / 61°0.02
82 °
Lewis, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low61°
Average precipitation0.02 in
Chance of precipitation12%
Record high93° (2022)
Record low45° (1961)
Thu, 0383° / 60°0.02
83 °
Lewis, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low60°
Average precipitation0.02 in
Chance of precipitation10%
Record high95° (2022)
Record low43° (1973)
Fri, 0482° / 60°0.04
82 °
Lewis, Friday, 4 September
Climate normal for this date — 60-year average.
Average high82°
Average low60°
Average precipitation0.04 in
Chance of precipitation12%
Record high96° (2022)
Record low43° (1961)
Sat, 0582° / 60°0.02
82 °
Lewis, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low60°
Average precipitation0.02 in
Chance of precipitation10%
Record high96° (2022)
Record low45° (1999)
Sun, 0680° / 59°0.03
80 °
Lewis, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low59°
Average precipitation0.03 in
Chance of precipitation10%
Record high97° (2022)
Record low44° (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 Lewis, 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 Lewis, 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.