Monthly outlook for Terreton, ID: average high 48.6°, average low 35.4°. That is 0.1° below the climate normal for October. Precipitation is expected on 5 days (about 2.1 inches), against a normal of 3 days and 0.5 inches. The warmest day looks like 26 October (55.2°), the coolest 28 October (27.8°).
48.6°/35.4°
Average high / low
−0.1°
Below normal
5 / 3
Wet days / normal
2.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
25 October – 3 November
48.8°
50.1°
-0.7°
4 November – 13 November
48.4°
45.3°
+1.7°
14 November – 23 November
at normal
39.3°
—
October records over 66 years
84.9°2 October 2010All-time high
5.9°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Mud Lake (2 mi).
Mon, 2655° / 35°0.2
55 °
Terreton, Monday, 26 October
Rain. High 55°, low 35°.
Pressure30.09 inHg
Wind1.3 mph SE
Humidity71%
Visibility6.2 mi
Dew point39°
Tue, 2745° / 31°0
45 °
Terreton, Tuesday, 27 October
Overcast. High 45°, low 31°.
Pressure30.09 inHg
Wind5.5 mph SW
Humidity67%
Visibility5.6 mi
Dew point31°
Wed, 2846° / 28°0
46 °
Terreton, Wednesday, 28 October
Partly cloudy. High 46°, low 28°.
Pressure30.21 inHg
Wind1.7 mph S
Humidity82%
Visibility6.2 mi
Dew point31°
Thu, 2950° / 29°0
50 °
Terreton, Thursday, 29 October
Overcast. High 50°, low 29°.
Pressure30.09 inHg
Wind3.9 mph N
Humidity62%
Visibility4.5 mi
Dew point33°
Fri, 3047° / 36°0.59
47 °
Terreton, Friday, 30 October
Heavy rain. High 47°, low 36°.
Pressure30.00 inHg
Wind7.7 mph NE
Humidity82%
Visibility—
Dew point38°
Sat, 3151° / 40°0.03
51 °
Terreton, Saturday, 31 October
Light rain. High 51°, low 40°.
Pressure29.97 inHg
Wind6.8 mph NE
Humidity67%
Visibility—
Dew point37°
Sun, 0148° / 43°0.93
48 °
Terreton, Sunday, 1 November
Heavy rain. High 48°, low 43°.
Pressure29.77 inHg
Wind10.5 mph NE
Humidity75%
Visibility—
Dew point38°
Mon, 0250° / 36°0.21
50 °
Terreton, Monday, 2 November
Rain. High 50°, low 36°.
Pressure29.94 inHg
Wind22.9 mph S
Humidity61%
Visibility—
Dew point32°
Tue, 0342° / 31°0
42 °
Terreton, Tuesday, 3 November
Overcast. High 42°, low 31°.
Pressure30.39 inHg
Wind5.1 mph N
Humidity59%
Visibility—
Dew point24°
Wed, 0447° / 35°0
47 °
Terreton, Wednesday, 4 November
Overcast. High 47°, low 35°.
Pressure30.03 inHg
Wind5.5 mph NE
Humidity49%
Visibility—
Dew point24°
Thu, 0549° / 36°0
49 °
Terreton, Thursday, 5 November
Partly cloudy. High 49°, low 36°.
Pressure30.00 inHg
Wind8.3 mph N
Humidity62%
Visibility—
Dew point30°
Fri, 0651° / 39°0.08
51 °
Terreton, Friday, 6 November
Light rain. High 51°, low 39°.
Pressure29.59 inHg
Wind27 mph SW
Humidity70%
Visibility—
Dew point35°
Sat, 0748° / 36°0
48 °
Terreton, Saturday, 7 November
Overcast. High 48°, low 36°.
Pressure29.85 inHg
Wind16.9 mph SW
Humidity59%
Visibility—
Dew point29°
Sun, 0842° / 38°0.01
42 °
Terreton, Sunday, 8 November
Light rain. High 42°, low 38°.
Pressure30.15 inHg
Wind8.2 mph SW
Humidity81%
Visibility—
Dew point35°
Mon, 0953° / 41°0
53 °
Terreton, Monday, 9 November
Overcast. High 53°, low 41°.
Pressure30.21 inHg
Wind6.5 mph N
Humidity69%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 1044° / 26°0.02
44 °
Terreton, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (2016)
Record low8° (1986)
Wed, 1144° / 26°0.02
44 °
Terreton, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high44°
Average low26°
Average precipitation0.02 in
Chance of precipitation17%
Record high58° (1967)
Record low8° (2000)
Thu, 1243° / 26°0.03
43 °
Terreton, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.03 in
Chance of precipitation18%
Record high60° (1999)
Record low7° (2014)
Fri, 1343° / 26°0.03
43 °
Terreton, Friday, 13 November
Climate normal for this date — 60-year average.
Average high43°
Average low26°
Average precipitation0.03 in
Chance of precipitation23%
Record high58° (1999)
Record low10° (2000)
Sat, 1441° / 26°0.02
41 °
Terreton, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high41°
Average low26°
Average precipitation0.02 in
Chance of precipitation13%
Record high60° (2025)
Record low0° (1978)
Sun, 1541° / 24°0.02
41 °
Terreton, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high41°
Average low24°
Average precipitation0.02 in
Chance of precipitation12%
Record high59° (1999)
Record low-4° (1978)
Mon, 1641° / 25°0.02
41 °
Terreton, Monday, 16 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.02 in
Chance of precipitation18%
Record high57° (1999)
Record low-3° (1978)
Tue, 1740° / 25°0.02
40 °
Terreton, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.02 in
Chance of precipitation18%
Record high53° (1976)
Record low3° (1978)
Wed, 1840° / 25°0.03
40 °
Terreton, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.03 in
Chance of precipitation20%
Record high56° (1995)
Record low7° (1978)
Thu, 1939° / 24°0.02
39 °
Terreton, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.02 in
Chance of precipitation18%
Record high56° (2007)
Record low3° (2022)
Fri, 2039° / 24°0.03
39 °
Terreton, Friday, 20 November
Climate normal for this date — 60-year average.
Average high39°
Average low24°
Average precipitation0.03 in
Chance of precipitation15%
Record high56° (1966)
Record low7° (1977)
Sat, 2138° / 22°0.02
38 °
Terreton, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high38°
Average low22°
Average precipitation0.02 in
Chance of precipitation8%
Record high52° (1974)
Record low7° (1977)
Sun, 2237° / 23°0.04
37 °
Terreton, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.04 in
Chance of precipitation25%
Record high51° (2006)
Record low-13° (1985)
Mon, 2337° / 22°0.03
37 °
Terreton, Monday, 23 November
Climate normal for this date — 60-year average.
Average high37°
Average low22°
Average precipitation0.03 in
Chance of precipitation18%
Record high51° (2017)
Record low-5° (1985)
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 Terreton, ID 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 Terreton, ID 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.