Monthly outlook for Ontario, KS: average high 65.7°, average low 48.7°. That is 2.4° above the climate normal for October. Precipitation is expected on 5 days (about 0.7 inches), against a normal of 4 days and 1.6 inches. The warmest day looks like 23 October (72.6°), the coolest 1 November (39.1°).
65.7°/48.7°
Average high / low
+2.4°
Above normal
5 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
19 October – 28 October
67°
63.1°
+2.2°
29 October – 7 November
63.5°
57.7°
+3.2°
8 November – 17 November
at normal
53.5°
—
October records over 66 years
93.7°5 October 1963All-time high
21.7°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Holton (10 mi).
Tue, 2069° / 44°0
69 °
Ontario, Tuesday, 20 October
Clear. High 69°, low 44°.
Pressure30.27 inHg
Wind8.4 mph S
Humidity59%
Visibility6.2 mi
Dew point50°
Wed, 2172° / 52°0.03
72 °
Ontario, Wednesday, 21 October
Light rain. High 72°, low 52°.
Pressure30.24 inHg
Wind7.7 mph S
Humidity55%
Visibility6.2 mi
Dew point51°
Thu, 2271° / 51°0
71 °
Ontario, Thursday, 22 October
Clear. High 71°, low 51°.
Pressure30.27 inHg
Wind8.7 mph SE
Humidity58%
Visibility6.2 mi
Dew point52°
Fri, 2373° / 53°0
73 °
Ontario, Friday, 23 October
Overcast. High 73°, low 53°.
Pressure30.15 inHg
Wind15.9 mph S
Humidity52%
Visibility—
Dew point49°
Sat, 2471° / 52°0.1
71 °
Ontario, Saturday, 24 October
Light rain. High 71°, low 52°.
Pressure30.15 inHg
Wind14.9 mph N
Humidity48%
Visibility—
Dew point49°
Sun, 2564° / 47°0
64 °
Ontario, Sunday, 25 October
Partly cloudy. High 64°, low 47°.
Pressure30.36 inHg
Wind8.9 mph S
Humidity34%
Visibility—
Dew point32°
Mon, 2671° / 50°0.06
71 °
Ontario, Monday, 26 October
Light rain. High 71°, low 50°.
Pressure30.03 inHg
Wind14.2 mph SW
Humidity73%
Visibility—
Dew point55°
Tue, 2754° / 48°0.24
54 °
Ontario, Tuesday, 27 October
Light rain. High 54°, low 48°.
Pressure30.12 inHg
Wind10.7 mph NE
Humidity93%
Visibility—
Dew point47°
Wed, 2859° / 49°0.04
59 °
Ontario, Wednesday, 28 October
Light rain. High 59°, low 49°.
Pressure30.06 inHg
Wind6.2 mph SE
Humidity96%
Visibility—
Dew point53°
Thu, 2972° / 55°0.06
72 °
Ontario, Thursday, 29 October
Light rain. High 72°, low 55°.
Pressure29.77 inHg
Wind25.5 mph S
Humidity77%
Visibility—
Dew point57°
Fri, 3066° / 49°0.12
66 °
Ontario, Friday, 30 October
Light rain. High 66°, low 49°.
Pressure29.85 inHg
Wind26.9 mph S
Humidity26%
Visibility—
Dew point27°
Sat, 3163° / 46°0.03
63 °
Ontario, Saturday, 31 October
Light rain. High 63°, low 46°.
Pressure29.91 inHg
Wind23.1 mph N
Humidity40%
Visibility—
Dew point34°
Sun, 0160° / 39°0.01
60 °
Ontario, Sunday, 1 November
Light rain. High 60°, low 39°.
Pressure29.94 inHg
Wind18 mph W
Humidity36%
Visibility—
Dew point28°
Mon, 0262° / 45°0
62 °
Ontario, Monday, 2 November
Mostly clear. High 62°, low 45°.
Pressure29.94 inHg
Wind15 mph S
Humidity41%
Visibility—
Dew point36°
Tue, 0358° / 55°0.02
58 °
Ontario, Tuesday, 3 November
Light rain. High 58°, low 55°.
Pressure29.62 inHg
Wind19.8 mph S
Humidity87%
Visibility—
Dew point54°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 0456° / 40°0.09
56 °
Ontario, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.09 in
Chance of precipitation23%
Record high79° (1978)
Record low15° (1991)
Thu, 0556° / 40°0.05
56 °
Ontario, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.05 in
Chance of precipitation25%
Record high73° (2015)
Record low23° (1982)
Fri, 0656° / 40°0.06
56 °
Ontario, Friday, 6 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.06 in
Chance of precipitation17%
Record high73° (1980)
Record low23° (1993)
Sat, 0756° / 40°0.03
56 °
Ontario, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.03 in
Chance of precipitation10%
Record high75° (1966)
Record low13° (1991)
Sun, 0857° / 41°0.08
57 °
Ontario, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high57°
Average low41°
Average precipitation0.08 in
Chance of precipitation17%
Record high77° (1980)
Record low15° (1991)
Mon, 0956° / 40°0.11
56 °
Ontario, Monday, 9 November
Climate normal for this date — 60-year average.
Average high56°
Average low40°
Average precipitation0.11 in
Chance of precipitation28%
Record high77° (2012)
Record low18° (2018)
Tue, 1053° / 38°0.1
53 °
Ontario, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high53°
Average low38°
Average precipitation0.1 in
Chance of precipitation25%
Record high76° (2012)
Record low15° (2018)
Wed, 1152° / 36°0.06
52 °
Ontario, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.06 in
Chance of precipitation18%
Record high75° (1964)
Record low10° (1986)
Thu, 1251° / 36°0.07
51 °
Ontario, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high51°
Average low36°
Average precipitation0.07 in
Chance of precipitation18%
Record high74° (2005)
Record low8° (2019)
Fri, 1353° / 36°0.06
53 °
Ontario, Friday, 13 November
Climate normal for this date — 60-year average.
Average high53°
Average low36°
Average precipitation0.06 in
Chance of precipitation15%
Record high76° (1999)
Record low7° (1986)
Sat, 1453° / 37°0.03
53 °
Ontario, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.03 in
Chance of precipitation18%
Record high73° (2025)
Record low16° (2014)
Sun, 1553° / 37°0.06
53 °
Ontario, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.06 in
Chance of precipitation22%
Record high73° (2025)
Record low21° (1972)
Mon, 1653° / 37°0.08
53 °
Ontario, Monday, 16 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.08 in
Chance of precipitation17%
Record high74° (1963)
Record low18° (2014)
Tue, 1754° / 38°0.07
54 °
Ontario, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high54°
Average low38°
Average precipitation0.07 in
Chance of precipitation18%
Record high74° (2016)
Record low19° (2014)
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 Ontario, KS 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 Ontario, KS 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.