Juneau, Alaska Rain Totals
Rainfall Map
See how much rain fell around Juneau over the last hour to the last 30 days, from the National Weather Service's Stage IV Precipitation Analysis. The analysis combines radar estimates with rain gauge reports, and is updated every hour. Drag the marker to see the rainfall at any other point.
Station Readings
These are the precipitation reports nearest Juneau for the selected date, from weather observers and automated stations, collected by the National Weather Service's National Operational Hydrologic Remote Sensing Center. Most cover the 24 hours up to the time of the observation, often 7 a.m., and include the water in any snow that fell.
Rainfall Compared With Normal
See whether it has been wetter or drier than normal around Juneau over the last 7 days, the last 30 days, and the year so far. Each period's rainfall is compared with the average for the same days of the year, from the PRISM 1991–2020 normals. Below 100% is drier than normal; above 100% is wetter.
Rainfall This Year
See all the rain and melted snow that has fallen around Juneau since January 1, updated daily. Drag the marker to see the year's total anywhere in the United States. A full year in Juneau brings about 67 inches on average.
Average Precipitation in Juneau
Average Precipitation by Month
| Month | Average precipitation |
|---|---|
| January | 6 in |
| February | 4.3 in |
| March | 3.7 in |
| April | 3.5 in |
| May | 3.5 in |
| June | 3.8 in |
| July | 5.1 in |
| August | 6.4 in |
| September | 9.2 in |
| October | 8.4 in |
| November | 6.5 in |
| December | 6.5 in |
Juneau, in Juneau Borough at 56 feet above sea level, gets about 67 inches of precipitation in an average year, more than 80% of weather stations in Alaska. September is the wettest month, averaging 9.2 inches, and April the driest, at 3.5 inches. Rain or snow falls on about 230 days a year, and 11 days bring an inch or more.
Averages are the NOAA 1991–2020 climate normals for the Juneau Intl AP, AK weather station, 6 miles WNW at an elevation of 16 feet. Precipitation is rain plus the water in melted snow and ice.
Rain Totals Near Juneau
About Juneau, Alaska
Juneau, officially the City and Borough of Juneau, is the capital of the U.S. state of Alaska, located along the Gastineau Channel in Southeast Alaska. Juneau was named the capital of Alaska in 1906, when the government of what was then the District of Alaska was moved from Sitka as dictated by the U.S. Congress in 1900. On July 1, 1970, the City of Juneau merged with the City of Douglas and the surrounding Greater Juneau Borough to form the current consolidated city-borough, which ranks as the second-largest municipality in the United States by area and is larger than both Rhode Island and Delaware.
How much rain fell near you
Weather websites forecast rain well. After a storm, it is often difficult to find out how much rain actually fell. This page collects the measured rain totals for your location in one place.
The data comes from the National Weather Service, its National Operational Hydrologic Remote Sensing Center (NOHRSC), and NOAA climate records. Coverage is for the United States.
How to find rain totals near you
- Allow location access when your browser asks. The page then shows the rain totals for your current location.
- To see a different location, type a city, address, or ZIP code in the search box.
- To see a past storm, select a date above the station readings.
- To check a different point, drag the marker on a map.
You can also find a city in the rain totals atlas. The atlas lists cities in each state.
What this page shows
Rainfall map. This map shows how much rain fell in the last 1, 6, and 24 hours, and the last 3, 7, and 30 days. The data comes from the National Weather Service's Stage IV precipitation analysis. The analysis starts with radar estimates and corrects them with rain gauge reports, so it shows rain between the gauges too. It updates every hour.
Station readings. These are measurements from weather observers and automated stations near you. Each reading shows the precipitation and its time period, the distance and direction to the station, and the time of the observation.
Rainfall compared with normal. This map shows the rain of the last 7 days, the last 30 days, and the year so far as a percent of normal. 100% is the normal amount for those days of the year. Less than 100% is drier than normal, and more than 100% is wetter.
Rainfall this year. This map shows all the precipitation since January 1. It updates once a day.
Average precipitation. These are the long-term averages at a weather station near you: the total for a year, the average for each month, and the number of days with rain or snow. They come from the NOAA 1991–2020 climate normals.
Rain and precipitation are different
Precipitation is all the water that falls from the sky: rain, drizzle, and the water in melted snow, sleet, and hail. Rain gauges and the rainfall maps measure precipitation.
In winter, a precipitation total includes snow. On average, 10 inches of snow melts to approximately 1 inch of water, so a 0.5-inch total on a snowy day can be 5 inches of snow. For snowfall, see snow totals.
An amount of rain that is too small to measure, less than 0.01 inch, is a trace.
How rain is measured
Weather observers use a rain gauge: a tall, narrow tube with a funnel at the top. The funnel collects rain into a measuring tube that is one tenth the area of the funnel, so 1 inch of rain fills the tube 10 inches deep. Observers can then read the total to the nearest hundredth of an inch.
Most volunteer observers read their gauge once a day, usually at 7 a.m., and report the total for the 24 hours before. Automated stations use a tipping bucket, which tips and empties every time it collects 0.01 inch, or a gauge that weighs the water. They report every hour or more often.
Radar measures rain in a different way. It sends out radio waves and measures how much the raindrops reflect back. The Stage IV analysis converts the radar signal to rainfall and then corrects it with the rain gauges.
Why rain totals can be different
Two rain totals for the same storm can be different, and both can be correct.
- Location. Thunderstorms can drop 2 inches of rain on one neighborhood and almost none a mile away.
- Time of the observation. Many observers report at 7 a.m. A storm that starts in the evening can be divided between two days. The rainfall maps use days that end at 7 a.m. Eastern Standard Time (12:00 UTC).
- Wind. Wind blows some rain over the top of a gauge, so gauges in windy, open places can measure too little.
- Radar. Radar can see hail as heavy rain, miss rain under its beam far from the radar, and be blocked by mountains. Where there are few gauges to correct it, the maps can be less accurate.
The rainfall map estimates the rain between stations. Use it to see the pattern of a storm. Use the station readings to see the measured values nearest to you.
When the data updates
- Rainfall map (1 hour to 24 hours): Every hour
- Rainfall map (3 to 30 days), compared with normal, and this year: Daily, after 12:00 UTC
- Station readings: Throughout the day, usually within 24 hours of the observation
Rain totals by city
The rain totals atlas lists cities in every state in the United States. Select a city to see its recent rainfall, station readings, and average precipitation. For snow, see snow totals.
About this data
- Rainfall maps
- Stage IV Precipitation Analysis, NOAA National Weather Service. Gridded precipitation over the last hour to the year to date, and how it compares with normal, from radar and rain gauges. Updated hourly; the period of the data is shown under each map.
- Station readings
- Snowfall, Snow Depth and Precipitation Observations, NOAA National Operational Hydrologic Remote Sensing Center. Daily snowfall, snow depth and precipitation reported by weather observers and automated stations. New readings arrive throughout the day, usually within 24 hours of the observation.
- Average precipitation
- U.S. Climate Normals (1991–2020), NOAA National Centers for Environmental Information. Average yearly and monthly precipitation, and the number of days with rain or melted snow, at weather stations. Updated
- Towns and cities
- Gazetteer Files and Population Estimates (2024), U.S. Census Bureau and Wikidata. U.S. towns and cities with snow and rain totals pages, with populations from the Census and Wikidata. Updated