Monthly outlook for Belfast, TN: average high 67.8°, average low 48.2°. That is 1.1° below the climate normal for October. Precipitation is expected on 5 days (about 1.6 inches), against a normal of 4 days and 1.7 inches. The warmest day looks like 15 October (88.9°), the coolest 19 October (29.9°).
67.8°/48.2°
Average high / low
−1.1°
Below normal
5 / 4
Wet days / normal
1.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
72.5°
70.8°
+0.9°
20 October – 29 October
60.2°
67.3°
-4°
30 October – 8 November
at normal
63.8°
—
October records over 66 years
95.5°3 October 2019All-time high
33.1°20 October 2022All-time low
Climate normals and records are computed from the nearest reference point — Petersburg (8 mi).
Sun, 1170° / 53°0.06
70 °
Belfast, Sunday, 11 October
Light rain. High 70°, low 53°.
Pressure30.00 inHg
Wind11.5 mph NW
Humidity75%
Visibility6.2 mi
Dew point59°
Mon, 1285° / 56°0
85 °
Belfast, Monday, 12 October
Mostly clear. High 85°, low 56°.
Pressure30.09 inHg
Wind5.6 mph W
Humidity46%
Visibility6.2 mi
Dew point60°
Tue, 1386° / 64°0
86 °
Belfast, Tuesday, 13 October
Clear. High 86°, low 64°.
Pressure30.03 inHg
Wind7.9 mph SW
Humidity43%
Visibility6.2 mi
Dew point60°
Wed, 1488° / 65°0
88 °
Belfast, Wednesday, 14 October
Partly cloudy. High 88°, low 65°.
Pressure30.06 inHg
Wind3.9 mph W
Humidity51%
Visibility6.2 mi
Dew point65°
Thu, 1589° / 70°0
89 °
Belfast, Thursday, 15 October
Overcast. High 89°, low 70°.
Pressure30.09 inHg
Wind6.6 mph SW
Humidity47%
Visibility—
Dew point64°
Fri, 1679° / 58°0.06
79 °
Belfast, Friday, 16 October
Light rain. High 79°, low 58°.
Pressure30.03 inHg
Wind13.3 mph NW
Humidity61%
Visibility—
Dew point63°
Sat, 1754° / 36°0
54 °
Belfast, Saturday, 17 October
Clear. High 54°, low 36°.
Pressure30.24 inHg
Wind16.6 mph NW
Humidity34%
Visibility—
Dew point22°
Sun, 1852° / 30°0
52 °
Belfast, Sunday, 18 October
Overcast. High 52°, low 30°.
Pressure30.45 inHg
Wind13.6 mph N
Humidity42%
Visibility—
Dew point25°
Mon, 1957° / 30°0
57 °
Belfast, Monday, 19 October
Clear. High 57°, low 30°.
Pressure30.56 inHg
Wind9.4 mph NE
Humidity29%
Visibility—
Dew point20°
Tue, 2061° / 35°0
61 °
Belfast, Tuesday, 20 October
Clear. High 61°, low 35°.
Pressure30.45 inHg
Wind5.3 mph S
Humidity30%
Visibility—
Dew point26°
Wed, 2165° / 39°0
65 °
Belfast, Wednesday, 21 October
Clear. High 65°, low 39°.
Pressure30.36 inHg
Wind4 mph SE
Humidity29%
Visibility—
Dew point29°
Thu, 2267° / 42°0
67 °
Belfast, Thursday, 22 October
Clear. High 67°, low 42°.
Pressure30.36 inHg
Wind7.6 mph SE
Humidity35%
Visibility—
Dew point35°
Fri, 2359° / 45°0.33
59 °
Belfast, Friday, 23 October
Rain. High 59°, low 45°.
Pressure30.18 inHg
Wind11.1 mph S
Humidity78%
Visibility—
Dew point45°
Sat, 2454° / 47°0.02
54 °
Belfast, Saturday, 24 October
Light rain. High 54°, low 47°.
Pressure30.03 inHg
Wind8.5 mph N
Humidity89%
Visibility—
Dew point48°
Sun, 2554° / 43°0.08
54 °
Belfast, Sunday, 25 October
Light rain. High 54°, low 43°.
Pressure29.97 inHg
Wind9 mph NW
Humidity75%
Visibility—
Dew point45°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2667° / 50°0.15
67 °
Belfast, Monday, 26 October
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.15 in
Chance of precipitation25%
Record high81° (1963)
Record low34° (2013)
Tue, 2766° / 50°0.13
66 °
Belfast, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high66°
Average low50°
Average precipitation0.13 in
Chance of precipitation28%
Record high81° (1963)
Record low37° (2001)
Wed, 2866° / 50°0.15
66 °
Belfast, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high66°
Average low50°
Average precipitation0.15 in
Chance of precipitation25%
Record high83° (2023)
Record low33° (1976)
Thu, 2966° / 49°0.11
66 °
Belfast, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high66°
Average low49°
Average precipitation0.11 in
Chance of precipitation25%
Record high83° (2016)
Record low35° (1976)
Fri, 3067° / 50°0.09
67 °
Belfast, Friday, 30 October
Climate normal for this date — 60-year average.
Average high67°
Average low50°
Average precipitation0.09 in
Chance of precipitation22%
Record high82° (2016)
Record low34° (2017)
Sat, 3167° / 51°0.11
67 °
Belfast, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high67°
Average low51°
Average precipitation0.11 in
Chance of precipitation30%
Record high83° (2016)
Record low34° (1993)
Sun, 0166° / 50°0.16
66 °
Belfast, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high66°
Average low50°
Average precipitation0.16 in
Chance of precipitation35%
Record high84° (2016)
Record low29° (2023)
Mon, 0264° / 49°0.09
64 °
Belfast, Monday, 2 November
Climate normal for this date — 60-year average.
Average high64°
Average low49°
Average precipitation0.09 in
Chance of precipitation25%
Record high80° (2016)
Record low30° (1966)
Tue, 0363° / 47°0.09
63 °
Belfast, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high63°
Average low47°
Average precipitation0.09 in
Chance of precipitation23%
Record high81° (2016)
Record low22° (1966)
Wed, 0462° / 47°0.09
62 °
Belfast, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.09 in
Chance of precipitation28%
Record high76° (1987)
Record low24° (1966)
Thu, 0562° / 47°0.14
62 °
Belfast, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high62°
Average low47°
Average precipitation0.14 in
Chance of precipitation32%
Record high75° (1975)
Record low24° (1991)
Fri, 0662° / 46°0.11
62 °
Belfast, Friday, 6 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.11 in
Chance of precipitation32%
Record high77° (2024)
Record low28° (1967)
Sat, 0762° / 46°0.15
62 °
Belfast, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.15 in
Chance of precipitation35%
Record high79° (2023)
Record low29° (1993)
Sun, 0862° / 46°0.04
62 °
Belfast, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high62°
Average low46°
Average precipitation0.04 in
Chance of precipitation15%
Record high79° (2005)
Record low28° (1971)
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 Belfast, TN 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 Belfast, TN 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.