Monthly outlook for Grassy Fork, TN: average high 69.8°, average low 52°. That is 0.9° above the climate normal for October. Precipitation is expected on 5 days (about 1.5 inches), against a normal of 5 days and 1.7 inches. The warmest day looks like 14 October (84°), the coolest 18 October (31.9°).
69.8°/52°
Average high / low
+0.9°
Above normal
5 / 5
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
72.4°
69.2°
+1.8°
19 October – 28 October
65.6°
65.8°
-0.1°
29 October – 7 November
at normal
63.1°
—
October records over 66 years
91°3 October 2019All-time high
28.9°29 October 1976All-time low
Climate normals and records are computed from the nearest reference point — Cosby (9 mi).
Sat, 1067° / 54°1.2
67 °
Grassy Fork, Saturday, 10 October
Rain. High 67°, low 54°.
Pressure30.00 inHg
Wind17.3 mph E
Humidity80%
Visibility6.2 mi
Dew point61°
Sun, 1173° / 61°0.07
73 °
Grassy Fork, Sunday, 11 October
Light rain. High 73°, low 61°.
Pressure29.94 inHg
Wind4.5 mph W
Humidity84%
Visibility6.2 mi
Dew point62°
Mon, 1281° / 63°0
81 °
Grassy Fork, Monday, 12 October
Light rain. High 81°, low 63°.
Pressure30.09 inHg
Wind8.3 mph W
Humidity59%
Visibility6.2 mi
Dew point61°
Tue, 1383° / 67°0
83 °
Grassy Fork, Tuesday, 13 October
Clear. High 83°, low 67°.
Pressure30.00 inHg
Wind10.1 mph W
Humidity41%
Visibility—
Dew point55°
Wed, 1484° / 71°0
84 °
Grassy Fork, Wednesday, 14 October
Overcast. High 84°, low 71°.
Pressure30.00 inHg
Wind5.5 mph SW
Humidity62%
Visibility—
Dew point68°
Thu, 1573° / 65°0.04
73 °
Grassy Fork, Thursday, 15 October
Light rain. High 73°, low 65°.
Pressure30.09 inHg
Wind5.9 mph SE
Humidity78%
Visibility—
Dew point64°
Fri, 1683° / 62°0.02
83 °
Grassy Fork, Friday, 16 October
Light rain. High 83°, low 62°.
Pressure29.97 inHg
Wind8.8 mph W
Humidity49%
Visibility—
Dew point59°
Sat, 1753° / 37°0.04
53 °
Grassy Fork, Saturday, 17 October
Light rain. High 53°, low 37°.
Pressure30.21 inHg
Wind13.8 mph NW
Humidity41%
Visibility—
Dew point27°
Sun, 1855° / 32°0
55 °
Grassy Fork, Sunday, 18 October
Clear. High 55°, low 32°.
Pressure30.30 inHg
Wind5.9 mph N
Humidity32%
Visibility—
Dew point23°
Mon, 1965° / 39°0
65 °
Grassy Fork, Monday, 19 October
Overcast. High 65°, low 39°.
Pressure30.30 inHg
Wind5.2 mph S
Humidity31%
Visibility—
Dew point31°
Tue, 2067° / 45°0
67 °
Grassy Fork, Tuesday, 20 October
Partly cloudy. High 67°, low 45°.
Pressure30.36 inHg
Wind6 mph SE
Humidity35%
Visibility—
Dew point35°
Wed, 2170° / 46°0
70 °
Grassy Fork, Wednesday, 21 October
Clear. High 70°, low 46°.
Pressure30.33 inHg
Wind7.2 mph SE
Humidity31%
Visibility—
Dew point35°
Thu, 2270° / 45°0
70 °
Grassy Fork, Thursday, 22 October
Overcast. High 70°, low 45°.
Pressure30.18 inHg
Wind7.3 mph SE
Humidity33%
Visibility—
Dew point36°
Fri, 2371° / 51°0.04
71 °
Grassy Fork, Friday, 23 October
Light rain. High 71°, low 51°.
Pressure29.97 inHg
Wind6.8 mph NW
Humidity47%
Visibility—
Dew point47°
Sat, 2450° / 39°0.03
50 °
Grassy Fork, Saturday, 24 October
Light rain. High 50°, low 39°.
Pressure29.97 inHg
Wind14.2 mph NW
Humidity43%
Visibility—
Dew point26°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2565° / 47°0.16
65 °
Grassy Fork, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.16 in
Chance of precipitation42%
Record high77° (1984)
Record low32° (1962)
Mon, 2665° / 48°0.09
65 °
Grassy Fork, Monday, 26 October
Climate normal for this date — 60-year average.
Average high65°
Average low48°
Average precipitation0.09 in
Chance of precipitation35%
Record high78° (2010)
Record low30° (2013)
Tue, 2765° / 47°0.17
65 °
Grassy Fork, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.17 in
Chance of precipitation35%
Record high81° (2014)
Record low29° (1962)
Wed, 2865° / 47°0.15
65 °
Grassy Fork, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.15 in
Chance of precipitation38%
Record high80° (1984)
Record low30° (1976)
Thu, 2964° / 46°0.11
64 °
Grassy Fork, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high64°
Average low46°
Average precipitation0.11 in
Chance of precipitation32%
Record high80° (2020)
Record low29° (1976)
Fri, 3066° / 45°0.12
66 °
Grassy Fork, Friday, 30 October
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.12 in
Chance of precipitation25%
Record high78° (2024)
Record low31° (2017)
Sat, 3165° / 47°0.09
65 °
Grassy Fork, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.09 in
Chance of precipitation32%
Record high78° (2024)
Record low31° (1993)
Sun, 0165° / 47°0.08
65 °
Grassy Fork, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high65°
Average low47°
Average precipitation0.08 in
Chance of precipitation38%
Record high80° (2016)
Record low29° (2023)
Mon, 0264° / 46°0.18
64 °
Grassy Fork, Monday, 2 November
Climate normal for this date — 60-year average.
Average high64°
Average low46°
Average precipitation0.18 in
Chance of precipitation38%
Record high79° (2004)
Record low25° (2023)
Tue, 0363° / 44°0.08
63 °
Grassy Fork, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high63°
Average low44°
Average precipitation0.08 in
Chance of precipitation28%
Record high78° (2003)
Record low26° (2014)
Wed, 0461° / 43°0.14
61 °
Grassy Fork, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high61°
Average low43°
Average precipitation0.14 in
Chance of precipitation38%
Record high77° (2003)
Record low21° (1966)
Thu, 0561° / 43°0.13
61 °
Grassy Fork, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high61°
Average low43°
Average precipitation0.13 in
Chance of precipitation32%
Record high76° (2024)
Record low25° (1966)
Fri, 0661° / 43°0.07
61 °
Grassy Fork, Friday, 6 November
Climate normal for this date — 60-year average.
Average high61°
Average low43°
Average precipitation0.07 in
Chance of precipitation35%
Record high80° (2024)
Record low27° (1967)
Sat, 0761° / 43°0.17
61 °
Grassy Fork, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high61°
Average low43°
Average precipitation0.17 in
Chance of precipitation37%
Record high78° (2024)
Record low27° (1967)
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 Grassy Fork, 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 Grassy Fork, 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.