Monthly outlook for Jamaica, IA: average high 66.4°, average low 49.5°. That is 4.9° above the climate normal for October. Precipitation is expected on 3 days (about 0.7 inches), against a normal of 4 days and 1.4 inches. The warmest day looks like 1 November (74.5°), the coolest 26 October (40.1°).
66.4°/49.5°
Average high / low
+4.9°
Above normal
3 / 4
Wet days / normal
0.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
65.1°
59.3°
+3.2°
28 October – 6 November
68.7°
54°
+8.2°
7 November – 16 November
at normal
48.6°
—
October records over 66 years
90°1 October 2023All-time high
13.5°29 October 1980All-time low
Climate normals and records are computed from the nearest reference point — Jefferson (12 mi).
Mon, 1965° / 44°0
65 °
Jamaica, Monday, 19 October
Overcast. High 65°, low 44°.
Pressure30.30 inHg
Wind6.8 mph S
Humidity62%
Visibility6.2 mi
Dew point47°
Tue, 2068° / 44°0
68 °
Jamaica, Tuesday, 20 October
Clear. High 68°, low 44°.
Pressure30.30 inHg
Wind7.2 mph SE
Humidity57%
Visibility6.2 mi
Dew point48°
Wed, 2171° / 51°0
71 °
Jamaica, Wednesday, 21 October
Clear. High 71°, low 51°.
Pressure30.21 inHg
Wind6.7 mph S
Humidity62%
Visibility6.2 mi
Dew point52°
Thu, 2271° / 50°0
71 °
Jamaica, Thursday, 22 October
Clear. High 71°, low 50°.
Pressure30.24 inHg
Wind8.5 mph SE
Humidity49%
Visibility—
Dew point48°
Fri, 2371° / 52°0
71 °
Jamaica, Friday, 23 October
Overcast. High 71°, low 52°.
Pressure30.18 inHg
Wind15.9 mph S
Humidity53%
Visibility—
Dew point48°
Sat, 2467° / 54°0.03
67 °
Jamaica, Saturday, 24 October
Light rain. High 67°, low 54°.
Pressure30.12 inHg
Wind17.3 mph S
Humidity66%
Visibility—
Dew point54°
Sun, 2555° / 42°0
55 °
Jamaica, Sunday, 25 October
Partly cloudy. High 55°, low 42°.
Pressure30.53 inHg
Wind10.6 mph NW
Humidity36%
Visibility—
Dew point26°
Mon, 2655° / 40°0.14
55 °
Jamaica, Monday, 26 October
Rain. High 55°, low 40°.
Pressure30.24 inHg
Wind13.6 mph S
Humidity44%
Visibility—
Dew point32°
Tue, 2763° / 51°0.13
63 °
Jamaica, Tuesday, 27 October
Light rain. High 63°, low 51°.
Pressure30.06 inHg
Wind7.8 mph S
Humidity78%
Visibility—
Dew point54°
Wed, 2861° / 55°0.37
61 °
Jamaica, Wednesday, 28 October
Rain. High 61°, low 55°.
Pressure29.85 inHg
Wind14.2 mph SW
Humidity88%
Visibility—
Dew point55°
Thu, 2969° / 53°0.02
69 °
Jamaica, Thursday, 29 October
Light rain. High 69°, low 53°.
Pressure29.77 inHg
Wind8.3 mph W
Humidity67%
Visibility—
Dew point54°
Fri, 3072° / 53°0
72 °
Jamaica, Friday, 30 October
Partly cloudy. High 72°, low 53°.
Pressure29.62 inHg
Wind18.5 mph SW
Humidity59%
Visibility—
Dew point52°
Sat, 3171° / 53°0
71 °
Jamaica, Saturday, 31 October
Partly cloudy. High 71°, low 53°.
Pressure29.65 inHg
Wind13.6 mph SW
Humidity56%
Visibility—
Dew point52°
Sun, 0175° / 57°0
75 °
Jamaica, Sunday, 1 November
Overcast. High 75°, low 57°.
Pressure29.88 inHg
Wind13 mph SW
Humidity44%
Visibility—
Dew point47°
Mon, 0264° / 50°0
64 °
Jamaica, Monday, 2 November
Clear. High 64°, low 50°.
Pressure30.27 inHg
Wind10.7 mph E
Humidity38%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0353° / 37°0.07
53 °
Jamaica, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low37°
Average precipitation0.07 in
Chance of precipitation23%
Record high74° (2022)
Record low7° (1991)
Wed, 0452° / 37°0.05
52 °
Jamaica, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.05 in
Chance of precipitation20%
Record high70° (2020)
Record low-3° (1991)
Thu, 0552° / 36°0.05
52 °
Jamaica, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low36°
Average precipitation0.05 in
Chance of precipitation23%
Record high72° (2015)
Record low19° (1991)
Fri, 0652° / 37°0.06
52 °
Jamaica, Friday, 6 November
Climate normal for this date — 60-year average.
Average high52°
Average low37°
Average precipitation0.06 in
Chance of precipitation22%
Record high73° (1980)
Record low11° (1991)
Sat, 0752° / 35°0.02
52 °
Jamaica, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high52°
Average low35°
Average precipitation0.02 in
Chance of precipitation10%
Record high72° (2001)
Record low-8° (1991)
Sun, 0851° / 35°0.04
51 °
Jamaica, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.04 in
Chance of precipitation15%
Record high76° (1999)
Record low-5° (1991)
Mon, 0951° / 35°0.12
51 °
Jamaica, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low35°
Average precipitation0.12 in
Chance of precipitation30%
Record high74° (2022)
Record low17° (1991)
Tue, 1048° / 32°0.09
48 °
Jamaica, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.09 in
Chance of precipitation27%
Record high75° (2012)
Record low12° (2018)
Wed, 1147° / 30°0.08
47 °
Jamaica, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.08 in
Chance of precipitation20%
Record high70° (1964)
Record low6° (1986)
Thu, 1246° / 30°0.07
46 °
Jamaica, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high46°
Average low30°
Average precipitation0.07 in
Chance of precipitation27%
Record high69° (2005)
Record low-4° (2019)
Fri, 1347° / 31°0.07
47 °
Jamaica, Friday, 13 November
Climate normal for this date — 60-year average.
Average high47°
Average low31°
Average precipitation0.07 in
Chance of precipitation22%
Record high74° (1999)
Record low4° (1986)
Sat, 1447° / 32°0.03
47 °
Jamaica, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high47°
Average low32°
Average precipitation0.03 in
Chance of precipitation17%
Record high73° (2025)
Record low12° (2014)
Sun, 1548° / 32°0.07
48 °
Jamaica, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.07 in
Chance of precipitation20%
Record high70° (2001)
Record low4° (1972)
Mon, 1648° / 32°0.04
48 °
Jamaica, Monday, 16 November
Climate normal for this date — 60-year average.
Average high48°
Average low32°
Average precipitation0.04 in
Chance of precipitation13%
Record high71° (2001)
Record low7° (1997)
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 Jamaica, 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 Jamaica, 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.