As of 13:46 MDT

Weather in Islay, WY

79°

Islay, Thursday, 8 October, 13:46

Partly cloudy. Feels like 79°. High 79°, low 47°.

Pressure29.91 inHg

Wind7.7 mph NW

Humidity17%

Visibility6.2 mi

Dew point31°

See detailed hourly forecast

Monthly outlook for Islay, WY: average high 61.6°, average low 42.1°. That is 2.9° above the climate normal for October. Precipitation is expected on 2 days (about 0.7 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 8 October (78.9°), the coolest 16 October (22.9°).

61.6°/42.1°

Average high / low

+2.9°

Above normal

2 / 4

Wet days / normal

0.7 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
8 October – 17 October	62°	57°	+2.7°
18 October – 27 October	61°	54°	+3.9°
28 October – 6 November	at normal	47.3°	—

October records over 66 years

80.6°2 October 2024All-time high

-5.1°26 October 2020All-time low

Fri, 0979° / 45°

79 °

Islay, Friday, 9 October

Clear. High 79°, low 45°.

Pressure29.83 inHg

Wind12.9 mph SW

Humidity19%

Visibility6.2 mi

Dew point25°

Sat, 1075° / 55°

75 °

Islay, Saturday, 10 October

Mostly clear. High 75°, low 55°.

Pressure29.65 inHg

Wind16.2 mph SW

Humidity21%

Visibility6.2 mi

Dew point27°

Sun, 1172° / 56°

0.01

72 °

Islay, Sunday, 11 October

Light rain. High 72°, low 56°.

Pressure29.71 inHg

Wind13.9 mph SW

Humidity27%

Visibility6.2 mi

Dew point35°

Mon, 1272° / 49°

72 °

Islay, Monday, 12 October

Clear. High 72°, low 49°.

Pressure29.74 inHg

Wind11.5 mph SW

Humidity23%

Visibility6.2 mi

Dew point29°

Tue, 1356° / 48°

0.02

56 °

Islay, Tuesday, 13 October

Light rain. High 56°, low 48°.

Pressure29.91 inHg

Wind11.9 mph SE

Humidity65%

Visibility—

Dew point43°

Wed, 1457° / 43°

0.52

57 °

Islay, Wednesday, 14 October

Rain. High 57°, low 43°.

Pressure29.56 inHg

Wind35.6 mph W

Humidity67%

Visibility—

Dew point44°

Thu, 1547° / 33°

0.01

47 °

Islay, Thursday, 15 October

Light rain. High 47°, low 33°.

Pressure29.94 inHg

Wind35.8 mph W

Humidity28%

Visibility—

Dew point12°

Fri, 1640° / 23°

40 °

Islay, Friday, 16 October

Overcast. High 40°, low 23°.

Pressure30.56 inHg

Wind16.7 mph SE

Humidity54%

Visibility—

Dew point18°

Sat, 1742° / 29°

0.19

42 °

Islay, Saturday, 17 October

Light rain. High 42°, low 29°.

Pressure30.27 inHg

Wind30.4 mph S

Humidity67%

Visibility—

Dew point30°

Sun, 1852° / 36°

52 °

Islay, Sunday, 18 October

Partly cloudy. High 52°, low 36°.

Pressure29.97 inHg

Wind31.6 mph W

Humidity42%

Visibility—

Dew point28°

Mon, 1965° / 41°

65 °

Islay, Monday, 19 October

Clear. High 65°, low 41°.

Pressure30.06 inHg

Wind32.7 mph W

Humidity21%

Visibility—

Dew point17°

Tue, 2064° / 44°

64 °

Islay, Tuesday, 20 October

Clear. High 64°, low 44°.

Pressure30.15 inHg

Wind15.8 mph W

Humidity17%

Visibility—

Dew point14°

Wed, 2165° / 40°

65 °

Islay, Wednesday, 21 October

Mostly clear. High 65°, low 40°.

Pressure30.00 inHg

Wind26.9 mph W

Humidity16%

Visibility—

Dew point14°

Thu, 2255° / 34°

55 °

Islay, Thursday, 22 October

Overcast. High 55°, low 34°.

Pressure30.18 inHg

Wind16.5 mph S

Humidity28%

Visibility—

Dew point15°

Fri, 2365° / 50°

65 °

Islay, Friday, 23 October

Overcast. High 65°, low 50°.

Pressure29.53 inHg

Wind29.2 mph W

Humidity17%

Visibility—

Dew point16°

From day 17 onward the outlook is built from 60-year climate statistics

Sat, 2453° / 32°

0.06

53 °

Islay, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high53°

Average low32°

Average precipitation0.06 in

Chance of precipitation18%

Record high70° (2014)

Record low15° (1975)

Sun, 2554° / 32°

0.04

54 °

Islay, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high54°

Average low32°

Average precipitation0.04 in

Chance of precipitation18%

Record high70° (2014)

Record low2° (2020)

Mon, 2652° / 32°

0.05

52 °

Islay, Monday, 26 October

Climate normal for this date — 60-year average.

Average high52°

Average low32°

Average precipitation0.05 in

Chance of precipitation22%

Record high71° (1977)

Record low-5° (2020)

Tue, 2750° / 31°

0.02

50 °

Islay, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.02 in

Chance of precipitation18%

Record high73° (2016)

Record low-1° (2011)

Wed, 2851° / 30°

0.05

51 °

Islay, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high51°

Average low30°

Average precipitation0.05 in

Chance of precipitation18%

Record high70° (2024)

Record low1° (2019)

Thu, 2950° / 31°

0.06

50 °

Islay, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high50°

Average low31°

Average precipitation0.06 in

Chance of precipitation27%

Record high70° (1968)

Record low-3° (2019)

Fri, 3047° / 29°

0.04

47 °

Islay, Friday, 30 October

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.04 in

Chance of precipitation23%

Record high67° (1968)

Record low-5° (2019)

Sat, 3146° / 29°

0.05

46 °

Islay, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high46°

Average low29°

Average precipitation0.05 in

Chance of precipitation30%

Record high68° (2008)

Record low-2° (1991)

Sun, 0146° / 28°

0.06

46 °

Islay, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high46°

Average low28°

Average precipitation0.06 in

Chance of precipitation28%

Record high65° (1988)

Record low2° (1991)

Mon, 0246° / 27°

0.06

46 °

Islay, Monday, 2 November

Climate normal for this date — 60-year average.

Average high46°

Average low27°

Average precipitation0.06 in

Chance of precipitation27%

Record high67° (2025)

Record low-7° (1995)

Tue, 0346° / 26°

0.05

46 °

Islay, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high46°

Average low26°

Average precipitation0.05 in

Chance of precipitation22%

Record high66° (2020)

Record low-8° (1967)

Wed, 0447° / 27°

0.02

47 °

Islay, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high47°

Average low27°

Average precipitation0.02 in

Chance of precipitation12%

Record high65° (2001)

Record low1° (1990)

Thu, 0547° / 28°

0.03

47 °

Islay, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.03 in

Chance of precipitation18%

Record high66° (1975)

Record low-7° (1967)

Fri, 0647° / 29°

0.02

47 °

Islay, Friday, 6 November

Climate normal for this date — 60-year average.

Average high47°

Average low29°

Average precipitation0.02 in

Chance of precipitation18%

Record high68° (2020)

Record low0° (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 Islay, WY 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 Islay, WY 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.