Monthly outlook for Royal, IA: average high 66.1°, average low 48.8°. That is 3.6° above the climate normal for October. Precipitation is expected on 1 day (about 0.7 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 10 October (83.3°), the coolest 18 October (31.6°).
66.1°/48.8°
Average high / low
+3.6°
Above normal
1 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
65.2°
60.5°
+2.6°
19 October – 28 October
67.7°
57°
+5.9°
29 October – 7 November
at normal
51.4°
—
October records over 66 years
89.6°1 October 2023All-time high
14.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Sioux Rapids (14 mi).
Sat, 1083° / 63°0
83 °
Royal, Saturday, 10 October
Clear. High 83°, low 63°.
Pressure29.77 inHg
Wind16.1 mph S
Humidity53%
Visibility6.2 mi
Dew point58°
Sun, 1181° / 64°0
81 °
Royal, Sunday, 11 October
Mostly clear. High 81°, low 64°.
Pressure29.74 inHg
Wind11.7 mph S
Humidity51%
Visibility6.2 mi
Dew point58°
Mon, 1280° / 59°0
80 °
Royal, Monday, 12 October
Clear. High 80°, low 59°.
Pressure29.71 inHg
Wind4.9 mph E
Humidity65%
Visibility6.2 mi
Dew point61°
Tue, 1363° / 56°0.01
63 °
Royal, Tuesday, 13 October
Light rain. High 63°, low 56°.
Pressure29.97 inHg
Wind7.9 mph N
Humidity68%
Visibility6.2 mi
Dew point51°
Wed, 1459° / 52°0
59 °
Royal, Wednesday, 14 October
Overcast. High 59°, low 52°.
Pressure30.21 inHg
Wind9.3 mph N
Humidity66%
Visibility—
Dew point47°
Thu, 1563° / 51°0.66
63 °
Royal, Thursday, 15 October
Rain. High 63°, low 51°.
Pressure29.71 inHg
Wind23 mph NW
Humidity93%
Visibility—
Dew point55°
Fri, 1647° / 37°0
47 °
Royal, Friday, 16 October
Partly cloudy. High 47°, low 37°.
Pressure30.09 inHg
Wind27.3 mph NW
Humidity48%
Visibility—
Dew point28°
Sat, 1743° / 32°0
43 °
Royal, Saturday, 17 October
Overcast. High 43°, low 32°.
Pressure30.56 inHg
Wind22.6 mph NW
Humidity43%
Visibility—
Dew point19°
Sun, 1853° / 32°0
53 °
Royal, Sunday, 18 October
Overcast. High 53°, low 32°.
Pressure30.33 inHg
Wind15.9 mph S
Humidity38%
Visibility—
Dew point23°
Mon, 1962° / 41°0
62 °
Royal, Monday, 19 October
Partly cloudy. High 62°, low 41°.
Pressure30.21 inHg
Wind9.5 mph S
Humidity45%
Visibility—
Dew point35°
Tue, 2067° / 44°0
67 °
Royal, Tuesday, 20 October
Clear. High 67°, low 44°.
Pressure30.24 inHg
Wind12.2 mph S
Humidity44%
Visibility—
Dew point39°
Wed, 2172° / 51°0
72 °
Royal, Wednesday, 21 October
Clear. High 72°, low 51°.
Pressure30.06 inHg
Wind16.9 mph SW
Humidity35%
Visibility—
Dew point37°
Thu, 2263° / 46°0
63 °
Royal, Thursday, 22 October
Clear. High 63°, low 46°.
Pressure30.15 inHg
Wind9.3 mph N
Humidity36%
Visibility—
Dew point31°
Fri, 2373° / 48°0
73 °
Royal, Friday, 23 October
Clear. High 73°, low 48°.
Pressure29.83 inHg
Wind16.4 mph S
Humidity38%
Visibility—
Dew point40°
Sat, 2469° / 54°0.01
69 °
Royal, Saturday, 24 October
Light rain. High 69°, low 54°.
Pressure29.94 inHg
Wind11.6 mph SW
Humidity43%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2556° / 40°0.04
56 °
Royal, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.04 in
Chance of precipitation20%
Record high77° (1989)
Record low24° (2020)
Mon, 2656° / 39°0.07
56 °
Royal, Monday, 26 October
Climate normal for this date — 60-year average.
Average high56°
Average low39°
Average precipitation0.07 in
Chance of precipitation17%
Record high76° (1989)
Record low19° (2020)
Tue, 2755° / 39°0.09
55 °
Royal, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high55°
Average low39°
Average precipitation0.09 in
Chance of precipitation25%
Record high78° (1999)
Record low15° (2020)
Wed, 2854° / 38°0.04
54 °
Royal, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.04 in
Chance of precipitation13%
Record high76° (2016)
Record low20° (1967)
Thu, 2955° / 38°0.08
55 °
Royal, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high55°
Average low38°
Average precipitation0.08 in
Chance of precipitation30%
Record high79° (2024)
Record low23° (1980)
Fri, 3054° / 38°0.08
54 °
Royal, Friday, 30 October
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.08 in
Chance of precipitation33%
Record high73° (2024)
Record low20° (1991)
Sat, 3153° / 37°0.09
53 °
Royal, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.09 in
Chance of precipitation28%
Record high73° (1968)
Record low18° (1993)
Sun, 0151° / 37°0.07
51 °
Royal, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.07 in
Chance of precipitation18%
Record high73° (2022)
Record low20° (2002)
Mon, 0251° / 36°0.03
51 °
Royal, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.03 in
Chance of precipitation17%
Record high74° (2022)
Record low11° (1991)
Tue, 0351° / 36°0.06
51 °
Royal, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1978)
Record low3° (1991)
Wed, 0450° / 35°0.03
50 °
Royal, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.03 in
Chance of precipitation17%
Record high71° (2020)
Record low-12° (1991)
Thu, 0550° / 34°0.06
50 °
Royal, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high50°
Average low34°
Average precipitation0.06 in
Chance of precipitation20%
Record high69° (2020)
Record low15° (1991)
Fri, 0650° / 35°0.04
50 °
Royal, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low35°
Average precipitation0.04 in
Chance of precipitation22%
Record high72° (2020)
Record low5° (1991)
Sat, 0750° / 33°0.02
50 °
Royal, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high50°
Average low33°
Average precipitation0.02 in
Chance of precipitation12%
Record high71° (2001)
Record low-17° (1991)
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 Royal, IA 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 Royal, IA 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.