Monthly outlook for Guyaz, ID: average high 59.9°, average low 39.9°. That is 0.6° above the climate normal for October. Precipitation is expected on 3 days (about 1.5 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 7 October (78.6°), the coolest 16 October (28.3°).
59.9°/39.9°
Average high / low
+0.6°
Above normal
3 / 3
Wet days / normal
1.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
60.8°
59.7°
+0.6°
17 October – 26 October
58.3°
56°
+1.3°
27 October – 5 November
at normal
49°
—
October records over 66 years
83.8°2 October 2010All-time high
3.6°30 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Ririe (12 mi).
Thu, 0877° / 40°0
77 °
Guyaz, Thursday, 8 October
Clear. High 77°, low 40°.
Pressure30.03 inHg
Wind5.3 mph SW
Humidity24%
Visibility6.2 mi
Dew point31°
Fri, 0977° / 51°0
77 °
Guyaz, Friday, 9 October
Clear. High 77°, low 51°.
Pressure29.71 inHg
Wind10 mph SW
Humidity22%
Visibility6.2 mi
Dew point32°
Sat, 1067° / 52°0.02
67 °
Guyaz, Saturday, 10 October
Light rain. High 67°, low 52°.
Pressure29.53 inHg
Wind4.5 mph SE
Humidity45%
Visibility6.2 mi
Dew point40°
Sun, 1151° / 43°0.67
51 °
Guyaz, Sunday, 11 October
Rain. High 51°, low 43°.
Pressure29.77 inHg
Wind8 mph SE
Humidity93%
Visibility—
Dew point44°
Mon, 1252° / 37°0.74
52 °
Guyaz, Monday, 12 October
Rain. High 52°, low 37°.
Pressure29.97 inHg
Wind7 mph NW
Humidity78%
Visibility—
Dew point38°
Tue, 1363° / 49°0.08
63 °
Guyaz, Tuesday, 13 October
Light rain. High 63°, low 49°.
Pressure29.80 inHg
Wind16.6 mph W
Humidity49%
Visibility—
Dew point40°
Wed, 1449° / 38°0.01
49 °
Guyaz, Wednesday, 14 October
Light rain. High 49°, low 38°.
Pressure29.83 inHg
Wind28.7 mph SW
Humidity38%
Visibility—
Dew point21°
Thu, 1543° / 30°0
43 °
Guyaz, Thursday, 15 October
Overcast. High 43°, low 30°.
Pressure30.33 inHg
Wind11.9 mph NW
Humidity37%
Visibility—
Dew point14°
Fri, 1651° / 28°0
51 °
Guyaz, Friday, 16 October
Mostly clear. High 51°, low 28°.
Pressure30.42 inHg
Wind7.2 mph SE
Humidity25%
Visibility—
Dew point9°
Sat, 1758° / 38°0
58 °
Guyaz, Saturday, 17 October
Overcast. High 58°, low 38°.
Pressure30.15 inHg
Wind6.5 mph SE
Humidity21%
Visibility—
Dew point11°
Sun, 1861° / 38°0
61 °
Guyaz, Sunday, 18 October
Clear. High 61°, low 38°.
Pressure30.09 inHg
Wind7.8 mph SE
Humidity20%
Visibility—
Dew point13°
Mon, 1959° / 41°0
59 °
Guyaz, Monday, 19 October
Clear. High 59°, low 41°.
Pressure30.09 inHg
Wind8.1 mph NW
Humidity22%
Visibility—
Dew point15°
Tue, 2056° / 37°0
56 °
Guyaz, Tuesday, 20 October
Clear. High 56°, low 37°.
Pressure30.21 inHg
Wind6.6 mph SE
Humidity32%
Visibility—
Dew point21°
Wed, 2157° / 36°0
57 °
Guyaz, Wednesday, 21 October
Clear. High 57°, low 36°.
Pressure30.27 inHg
Wind7.6 mph SE
Humidity30%
Visibility—
Dew point19°
Thu, 2259° / 37°0
59 °
Guyaz, Thursday, 22 October
Clear. High 59°, low 37°.
Pressure30.06 inHg
Wind7.7 mph SE
Humidity22%
Visibility—
Dew point14°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2354° / 34°0.06
54 °
Guyaz, Friday, 23 October
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.06 in
Chance of precipitation32%
Record high67° (1999)
Record low19° (1984)
Sat, 2454° / 34°0.06
54 °
Guyaz, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.06 in
Chance of precipitation30%
Record high71° (1992)
Record low16° (1975)
Sun, 2554° / 34°0.05
54 °
Guyaz, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high54°
Average low34°
Average precipitation0.05 in
Chance of precipitation25%
Record high72° (2014)
Record low15° (1975)
Mon, 2653° / 33°0.06
53 °
Guyaz, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1999)
Record low9° (2020)
Tue, 2752° / 32°0.03
52 °
Guyaz, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low32°
Average precipitation0.03 in
Chance of precipitation18%
Record high70° (1977)
Record low8° (1996)
Wed, 2851° / 32°0.07
51 °
Guyaz, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low32°
Average precipitation0.07 in
Chance of precipitation30%
Record high68° (1990)
Record low9° (1996)
Thu, 2950° / 31°0.06
50 °
Guyaz, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high50°
Average low31°
Average precipitation0.06 in
Chance of precipitation30%
Record high70° (1964)
Record low10° (2019)
Fri, 3048° / 30°0.06
48 °
Guyaz, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.06 in
Chance of precipitation30%
Record high69° (1962)
Record low4° (2019)
Sat, 3149° / 31°0.05
49 °
Guyaz, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high49°
Average low31°
Average precipitation0.05 in
Chance of precipitation28%
Record high68° (2008)
Record low12° (1961)
Sun, 0148° / 30°0.03
48 °
Guyaz, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.03 in
Chance of precipitation22%
Record high67° (1988)
Record low-1° (2004)
Mon, 0247° / 30°0.04
47 °
Guyaz, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low30°
Average precipitation0.04 in
Chance of precipitation25%
Record high64° (1965)
Record low-3° (1991)
Tue, 0348° / 28°0.03
48 °
Guyaz, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.03 in
Chance of precipitation17%
Record high64° (1962)
Record low-8° (1991)
Wed, 0448° / 29°0.04
48 °
Guyaz, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high63° (2001)
Record low8° (1991)
Thu, 0548° / 30°0.05
48 °
Guyaz, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high48°
Average low30°
Average precipitation0.05 in
Chance of precipitation30%
Record high64° (2020)
Record low1° (1961)
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 Guyaz, 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 Guyaz, 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.