Monthly outlook for Roy, UT: average high 91.2°, average low 69.8°. That is 2.7° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 2 days and 0.3 inches. The warmest day looks like 9 August (100.6°), the coolest 20 August (66.3°).
91.2°/69.8°
Average high / low
+2.7°
Above normal
1 / 2
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
91.8°
87°
+2.6°
18 August – 27 August
90.1°
84.9°
+2.9°
28 August – 6 September
at normal
83°
—
August records over 66 years
101.1°2 August 2024All-time high
40.6°30 August 1964All-time low
Climate normals and records are computed from the nearest reference point — Ogden (6 mi).
Sun, 09101° / 70°0
101 °
Roy, Sunday, 9 August
Clear. High 101°, low 70°.
Pressure29.83 inHg
Wind7.4 mph SW
Humidity31%
Visibility6.2 mi
Dew point50°
Mon, 1094° / 67°0
94 °
Roy, Monday, 10 August
Mostly clear. High 94°, low 67°.
Pressure29.83 inHg
Wind7.9 mph SW
Humidity31%
Visibility6.2 mi
Dew point50°
Tue, 1191° / 71°0
91 °
Roy, Tuesday, 11 August
Light rain. High 91°, low 71°.
Pressure29.88 inHg
Wind7.7 mph SW
Humidity30%
Visibility6.2 mi
Dew point48°
Wed, 1289° / 73°0
89 °
Roy, Wednesday, 12 August
Overcast. High 89°, low 73°.
Pressure29.80 inHg
Wind8.3 mph SW
Humidity30%
Visibility6.2 mi
Dew point49°
Thu, 1389° / 68°0.02
89 °
Roy, Thursday, 13 August
Light rain. High 89°, low 68°.
Pressure29.77 inHg
Wind12.5 mph S
Humidity29%
Visibility—
Dew point48°
Fri, 1487° / 67°0.03
87 °
Roy, Friday, 14 August
Light rain. High 87°, low 67°.
Pressure29.91 inHg
Wind12.7 mph SW
Humidity44%
Visibility—
Dew point55°
Sat, 1587° / 67°0.06
87 °
Roy, Saturday, 15 August
Light rain. High 87°, low 67°.
Pressure29.97 inHg
Wind9.1 mph E
Humidity40%
Visibility—
Dew point55°
Sun, 1689° / 69°0
89 °
Roy, Sunday, 16 August
Partly cloudy. High 89°, low 69°.
Pressure30.00 inHg
Wind9.3 mph SW
Humidity29%
Visibility—
Dew point48°
Mon, 1791° / 72°0
91 °
Roy, Monday, 17 August
Overcast. High 91°, low 72°.
Pressure29.97 inHg
Wind9.1 mph W
Humidity27%
Visibility—
Dew point47°
Tue, 1888° / 72°0
88 °
Roy, Tuesday, 18 August
Overcast. High 88°, low 72°.
Pressure29.94 inHg
Wind10.1 mph W
Humidity34%
Visibility—
Dew point53°
Wed, 1987° / 69°0
87 °
Roy, Wednesday, 19 August
Partly cloudy. High 87°, low 69°.
Pressure29.97 inHg
Wind8.9 mph W
Humidity35%
Visibility—
Dew point51°
Thu, 2088° / 66°0
88 °
Roy, Thursday, 20 August
Mostly clear. High 88°, low 66°.
Pressure29.94 inHg
Wind8.5 mph SW
Humidity37%
Visibility—
Dew point53°
Fri, 2194° / 72°0.01
94 °
Roy, Friday, 21 August
Light rain. High 94°, low 72°.
Pressure29.88 inHg
Wind9.5 mph NE
Humidity29%
Visibility—
Dew point51°
Sat, 2292° / 71°0
92 °
Roy, Saturday, 22 August
Mostly clear. High 92°, low 71°.
Pressure29.88 inHg
Wind9.8 mph W
Humidity29%
Visibility—
Dew point51°
Sun, 2391° / 72°0
91 °
Roy, Sunday, 23 August
Overcast. High 91°, low 72°.
Pressure29.88 inHg
Wind11.8 mph S
Humidity31%
Visibility—
Dew point51°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2485° / 59°0.02
85 °
Roy, Monday, 24 August
Climate normal for this date — 60-year average.
Average high85°
Average low59°
Average precipitation0.02 in
Chance of precipitation7%
Record high96° (2020)
Record low44° (1968)
Tue, 2585° / 58°0.01
85 °
Roy, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.01 in
Chance of precipitation10%
Record high95° (2011)
Record low47° (1992)
Wed, 2685° / 59°0.03
85 °
Roy, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high85°
Average low59°
Average precipitation0.03 in
Chance of precipitation12%
Record high95° (2011)
Record low47° (1992)
Thu, 2783° / 59°0.03
83 °
Roy, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high83°
Average low59°
Average precipitation0.03 in
Chance of precipitation10%
Record high94° (2017)
Record low48° (1992)
Fri, 2884° / 58°0.01
84 °
Roy, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low58°
Average precipitation0.01 in
Chance of precipitation7%
Record high95° (2017)
Record low47° (2004)
Sat, 2985° / 58°0.03
85 °
Roy, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.03 in
Chance of precipitation5%
Record high98° (2023)
Record low46° (1960)
Sun, 3085° / 58°0.02
85 °
Roy, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high85°
Average low58°
Average precipitation0.02 in
Chance of precipitation10%
Record high95° (2022)
Record low41° (1964)
Mon, 3183° / 58°0.03
83 °
Roy, Monday, 31 August
Climate normal for this date — 60-year average.
Average high83°
Average low58°
Average precipitation0.03 in
Chance of precipitation17%
Record high97° (2022)
Record low42° (1965)
Tue, 0183° / 57°0.03
83 °
Roy, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.03 in
Chance of precipitation10%
Record high96° (2022)
Record low44° (1965)
Wed, 0282° / 58°0.04
82 °
Roy, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high82°
Average low58°
Average precipitation0.04 in
Chance of precipitation17%
Record high94° (2022)
Record low46° (1973)
Thu, 0383° / 57°0.03
83 °
Roy, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.03 in
Chance of precipitation10%
Record high98° (2022)
Record low42° (1964)
Fri, 0483° / 57°0.04
83 °
Roy, Friday, 4 September
Climate normal for this date — 60-year average.
Average high83°
Average low57°
Average precipitation0.04 in
Chance of precipitation10%
Record high98° (2022)
Record low43° (1964)
Sat, 0582° / 57°0.02
82 °
Roy, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high82°
Average low57°
Average precipitation0.02 in
Chance of precipitation12%
Record high98° (2022)
Record low44° (1971)
Sun, 0681° / 56°0.04
81 °
Roy, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high81°
Average low56°
Average precipitation0.04 in
Chance of precipitation18%
Record high100° (2022)
Record low46° (1968)
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 Roy, 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 Roy, 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.