Monthly outlook for Royston, MI: average high 58.6°, average low 42.8°. That is 1.8° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 6 days and 1.6 inches. The warmest day looks like 10 October (76.1°), the coolest 18 October (32.2°).
58.6°/42.8°
Average high / low
+1.8°
Above normal
3 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
61.1°
56.5°
+2.5°
19 October – 28 October
54.3°
52.6°
+0.9°
29 October – 7 November
at normal
48.5°
—
October records over 66 years
85.3°7 October 2007All-time high
23.9°31 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Canada Creek Ranch (15 mi).
Sat, 1076° / 47°0
76 °
Royston, Saturday, 10 October
Clear. High 76°, low 47°.
Pressure30.15 inHg
Wind10 mph SE
Humidity64%
Visibility6.2 mi
Dew point54°
Sun, 1171° / 56°0
71 °
Royston, Sunday, 11 October
Overcast. High 71°, low 56°.
Pressure30.00 inHg
Wind7.6 mph S
Humidity58%
Visibility6.2 mi
Dew point53°
Mon, 1273° / 54°0
73 °
Royston, Monday, 12 October
Overcast. High 73°, low 54°.
Pressure29.77 inHg
Wind5.8 mph SW
Humidity73%
Visibility6.2 mi
Dew point58°
Tue, 1357° / 51°0.22
57 °
Royston, Tuesday, 13 October
Light rain. High 57°, low 51°.
Pressure29.88 inHg
Wind7.7 mph NE
Humidity96%
Visibility—
Dew point50°
Wed, 1455° / 44°0
55 °
Royston, Wednesday, 14 October
Partly cloudy. High 55°, low 44°.
Pressure30.18 inHg
Wind7.5 mph N
Humidity51%
Visibility—
Dew point35°
Thu, 1555° / 42°0.19
55 °
Royston, Thursday, 15 October
Light rain. High 55°, low 42°.
Pressure30.06 inHg
Wind12.6 mph SE
Humidity96%
Visibility—
Dew point47°
Fri, 1662° / 47°0
62 °
Royston, Friday, 16 October
Light rain. High 62°, low 47°.
Pressure29.83 inHg
Wind13 mph W
Humidity78%
Visibility—
Dew point50°
Sat, 1746° / 35°0.04
46 °
Royston, Saturday, 17 October
Light rain. High 46°, low 35°.
Pressure30.30 inHg
Wind12.6 mph NW
Humidity55%
Visibility—
Dew point30°
Sun, 1853° / 32°0
53 °
Royston, Sunday, 18 October
Mostly clear. High 53°, low 32°.
Pressure30.42 inHg
Wind9.7 mph SW
Humidity41%
Visibility—
Dew point26°
Mon, 1954° / 38°0
54 °
Royston, Monday, 19 October
Partly cloudy. High 54°, low 38°.
Pressure30.50 inHg
Wind9 mph N
Humidity40%
Visibility—
Dew point28°
Tue, 2053° / 38°0
53 °
Royston, Tuesday, 20 October
Overcast. High 53°, low 38°.
Pressure30.36 inHg
Wind7.4 mph S
Humidity44%
Visibility—
Dew point30°
Wed, 2157° / 44°0
57 °
Royston, Wednesday, 21 October
Overcast. High 57°, low 44°.
Pressure30.03 inHg
Wind12.4 mph W
Humidity64%
Visibility—
Dew point44°
Thu, 2257° / 41°0
57 °
Royston, Thursday, 22 October
Mostly clear. High 57°, low 41°.
Pressure30.18 inHg
Wind10 mph N
Humidity43%
Visibility—
Dew point32°
Fri, 2348° / 35°0
48 °
Royston, Friday, 23 October
Overcast. High 48°, low 35°.
Pressure30.33 inHg
Wind6.2 mph N
Humidity43%
Visibility—
Dew point25°
Sat, 2457° / 37°0
57 °
Royston, Saturday, 24 October
Overcast. High 57°, low 37°.
Pressure30.03 inHg
Wind14.3 mph SW
Humidity42%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2553° / 40°0.05
53 °
Royston, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high53°
Average low40°
Average precipitation0.05 in
Chance of precipitation28%
Record high75° (2012)
Record low28° (1972)
Mon, 2651° / 39°0.08
51 °
Royston, Monday, 26 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.08 in
Chance of precipitation32%
Record high74° (1989)
Record low28° (2019)
Tue, 2751° / 39°0.09
51 °
Royston, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high51°
Average low39°
Average precipitation0.09 in
Chance of precipitation43%
Record high71° (1989)
Record low26° (1976)
Wed, 2850° / 38°0.04
50 °
Royston, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.04 in
Chance of precipitation23%
Record high69° (1989)
Record low26° (1965)
Thu, 2949° / 37°0.04
49 °
Royston, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.04 in
Chance of precipitation27%
Record high76° (2024)
Record low26° (1965)
Fri, 3051° / 37°0.08
51 °
Royston, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low37°
Average precipitation0.08 in
Chance of precipitation32%
Record high75° (2024)
Record low26° (2020)
Sat, 3151° / 38°0.09
51 °
Royston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low38°
Average precipitation0.09 in
Chance of precipitation37%
Record high66° (1974)
Record low24° (2020)
Sun, 0150° / 38°0.11
50 °
Royston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high50°
Average low38°
Average precipitation0.11 in
Chance of precipitation40%
Record high69° (1990)
Record low25° (2023)
Mon, 0249° / 37°0.11
49 °
Royston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high49°
Average low37°
Average precipitation0.11 in
Chance of precipitation35%
Record high68° (1990)
Record low25° (1984)
Tue, 0347° / 36°0.08
47 °
Royston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low36°
Average precipitation0.08 in
Chance of precipitation43%
Record high69° (2022)
Record low22° (1991)
Wed, 0448° / 36°0.09
48 °
Royston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.09 in
Chance of precipitation40%
Record high71° (1964)
Record low19° (1991)
Thu, 0548° / 36°0.11
48 °
Royston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low36°
Average precipitation0.11 in
Chance of precipitation38%
Record high70° (1978)
Record low16° (1991)
Fri, 0647° / 35°0.11
47 °
Royston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high47°
Average low35°
Average precipitation0.11 in
Chance of precipitation35%
Record high69° (2020)
Record low18° (1991)
Sat, 0746° / 34°0.05
46 °
Royston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high46°
Average low34°
Average precipitation0.05 in
Chance of precipitation32%
Record high70° (2020)
Record low12° (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 Royston, MI 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 Royston, MI 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.