Monthly outlook for Harrison, OK: average high 79.3°, average low 55.6°. That is 3.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 4 days and 1.8 inches. The warmest day looks like 14 October (93.3°), the coolest 18 October (38.1°).
79.3°/55.6°
Average high / low
+3.3°
Above normal
1 / 4
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
85.8°
74.3°
+6.4°
17 October – 26 October
68.4°
70.5°
-1.1°
27 October – 5 November
at normal
66°
—
October records over 66 years
91.8°8 October 1963All-time high
29.1°31 October 1993All-time low
Climate normals and records are computed from the nearest reference point — Brent (6 mi).
Thu, 0891° / 58°0
91 °
Harrison, Thursday, 8 October
Clear. High 91°, low 58°.
Pressure30.06 inHg
Wind2.7 mph S
Humidity55%
Visibility6.2 mi
Dew point64°
Fri, 0985° / 66°0
85 °
Harrison, Friday, 9 October
Clear. High 85°, low 66°.
Pressure30.06 inHg
Wind6.4 mph SE
Humidity55%
Visibility6.2 mi
Dew point63°
Sat, 1085° / 67°0
85 °
Harrison, Saturday, 10 October
Clear. High 85°, low 67°.
Pressure29.97 inHg
Wind7.4 mph SE
Humidity56%
Visibility6.2 mi
Dew point63°
Sun, 1187° / 65°0
87 °
Harrison, Sunday, 11 October
Clear. High 87°, low 65°.
Pressure29.91 inHg
Wind9.5 mph SW
Humidity48%
Visibility—
Dew point59°
Mon, 1289° / 69°0
89 °
Harrison, Monday, 12 October
Clear. High 89°, low 69°.
Pressure29.94 inHg
Wind9.9 mph SW
Humidity44%
Visibility—
Dew point59°
Tue, 1392° / 64°0
92 °
Harrison, Tuesday, 13 October
Clear. High 92°, low 64°.
Pressure29.91 inHg
Wind6.2 mph SW
Humidity43%
Visibility—
Dew point60°
Wed, 1493° / 70°0
93 °
Harrison, Wednesday, 14 October
Clear. High 93°, low 70°.
Pressure29.85 inHg
Wind14.3 mph S
Humidity44%
Visibility—
Dew point63°
Thu, 1581° / 65°0.15
81 °
Harrison, Thursday, 15 October
Light rain. High 81°, low 65°.
Pressure29.83 inHg
Wind16.3 mph SW
Humidity69%
Visibility—
Dew point69°
Fri, 1667° / 53°0
67 °
Harrison, Friday, 16 October
Clear. High 67°, low 53°.
Pressure30.24 inHg
Wind13.8 mph N
Humidity25%
Visibility—
Dew point28°
Sat, 1761° / 43°0
61 °
Harrison, Saturday, 17 October
Clear. High 61°, low 43°.
Pressure30.36 inHg
Wind11.4 mph N
Humidity26%
Visibility—
Dew point23°
Sun, 1863° / 38°0
63 °
Harrison, Sunday, 18 October
Partly cloudy. High 63°, low 38°.
Pressure30.36 inHg
Wind4 mph N
Humidity29%
Visibility—
Dew point26°
Mon, 1970° / 40°0
70 °
Harrison, Monday, 19 October
Partly cloudy. High 70°, low 40°.
Pressure30.21 inHg
Wind7.8 mph S
Humidity27%
Visibility—
Dew point28°
Tue, 2075° / 46°0
75 °
Harrison, Tuesday, 20 October
Partly cloudy. High 75°, low 46°.
Pressure30.33 inHg
Wind7.3 mph E
Humidity25%
Visibility—
Dew point30°
Wed, 2174° / 49°0
74 °
Harrison, Wednesday, 21 October
Partly cloudy. High 74°, low 49°.
Pressure30.33 inHg
Wind9.3 mph N
Humidity24%
Visibility—
Dew point31°
Thu, 2267° / 44°0
67 °
Harrison, Thursday, 22 October
Clear. High 67°, low 44°.
Pressure30.27 inHg
Wind7.4 mph N
Humidity27%
Visibility—
Dew point27°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2370° / 54°0.1
70 °
Harrison, Friday, 23 October
Climate normal for this date — 60-year average.
Average high70°
Average low54°
Average precipitation0.1 in
Chance of precipitation35%
Record high85° (2003)
Record low39° (1990)
Sat, 2469° / 54°0.15
69 °
Harrison, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high69°
Average low54°
Average precipitation0.15 in
Chance of precipitation27%
Record high86° (2024)
Record low38° (1981)
Sun, 2568° / 52°0.13
68 °
Harrison, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.13 in
Chance of precipitation33%
Record high82° (2014)
Record low39° (1982)
Mon, 2669° / 52°0.12
69 °
Harrison, Monday, 26 October
Climate normal for this date — 60-year average.
Average high69°
Average low52°
Average precipitation0.12 in
Chance of precipitation33%
Record high83° (2014)
Record low39° (1994)
Tue, 2768° / 52°0.16
68 °
Harrison, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high68°
Average low52°
Average precipitation0.16 in
Chance of precipitation32%
Record high82° (1963)
Record low38° (2012)
Wed, 2867° / 51°0.14
67 °
Harrison, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.14 in
Chance of precipitation30%
Record high85° (2024)
Record low35° (2008)
Thu, 2967° / 51°0.15
67 °
Harrison, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.15 in
Chance of precipitation33%
Record high81° (2016)
Record low36° (1993)
Fri, 3067° / 52°0.2
67 °
Harrison, Friday, 30 October
Climate normal for this date — 60-year average.
Average high67°
Average low52°
Average precipitation0.2 in
Chance of precipitation33%
Record high82° (2024)
Record low32° (1993)
Sat, 3167° / 51°0.26
67 °
Harrison, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.26 in
Chance of precipitation37%
Record high83° (2016)
Record low29° (1993)
Sun, 0166° / 50°0.2
66 °
Harrison, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high66°
Average low50°
Average precipitation0.2 in
Chance of precipitation32%
Record high80° (2016)
Record low30° (2023)
Mon, 0264° / 49°0.07
64 °
Harrison, Monday, 2 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.07 in
Chance of precipitation25%
Record high81° (2012)
Record low28° (1991)
Tue, 0364° / 49°0.11
64 °
Harrison, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.11 in
Chance of precipitation27%
Record high81° (1978)
Record low22° (1991)
Wed, 0465° / 48°0.15
65 °
Harrison, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.15 in
Chance of precipitation30%
Record high81° (1978)
Record low24° (1991)
Thu, 0564° / 48°0.19
64 °
Harrison, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high64°
Average low48°
Average precipitation0.19 in
Chance of precipitation25%
Record high83° (2017)
Record low29° (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 Harrison, OK 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 Harrison, OK 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.