Irwin, ID weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Irwin now
Loading the National Weather Service forecast…
Irwin weather by the hour
Irwin weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Irwin.
This week in Irwin
Sunrise, sunset and moon in Irwin
What is the weather usually like in Irwin?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 11°F average low
- 20.1 inprecipitation per year · 510 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Irwin: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SWAN VALLEY, ID US (USC00108937), adjusted for the elevation of Irwin.
Irwin weather month by month
Sunrise and sunset in Irwin through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:52 AM | 5:16 PM | 9 h 23 min |
| February | 7:21 AM | 5:57 PM | 10 h 36 min |
| March | 7:35 AM | 7:32 PM | 11 h 57 min |
| April | 6:40 AM | 8:09 PM | 13 h 29 min |
| May | 5:58 AM | 8:44 PM | 14 h 45 min |
| June | 5:42 AM | 9:09 PM | 15 h 27 min |
| July | 5:57 AM | 9:05 PM | 15 h 8 min |
| August | 6:29 AM | 8:29 PM | 14 h 0 min |
| September | 7:03 AM | 7:36 PM | 12 h 33 min |
| October | 7:38 AM | 6:43 PM | 11 h 5 min |
| November | 7:17 AM | 5:02 PM | 9 h 44 min |
| December | 7:49 AM | 4:51 PM | 9 h 2 min |
Times for the 15th of each month, local time (America/Boise).
What is the weather like in Irwin?
Irwin has a warm-summer humid continental climate. The warmest month is July, with an average high of 85°F (30°C), and the coldest is January, with average lows of 11°F (-12°C).
It gets about 20.1 inches (510 mm) of precipitation a year. The wettest month is May and the driest is July.
The best time to visit Irwin is June to September. At 5,325 ft of elevation, nights are cool even in summer. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Irwin
Weather in towns near Irwin
Questions about the weather in Irwin
What is the hottest month in Irwin?
July, with an average high of 85°F (30°C).
What is the coldest month in Irwin?
January, with an average low of 11°F (-12°C).
How much does it rain in Irwin?
About 20.1 inches (510 mm) a year; the wettest month is May.
Does it snow in Irwin?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Irwin?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Irwin have?
Warm-summer humid continental (Köppen Dfb).
What is the weather like in Irwin in November?
Highs average 43°F and lows 20°F, with about 1.6 inches of precipitation.
What time is sunrise in Irwin?
Around 7:17 AM in mid-November, and sunset around 5:02 PM. Today’s exact times are shown above.
Where does this Irwin weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Irwin.
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