Saint John climate

Saint John Weather in August

NOAA 1991-2020 normals for St John, 0.5 km from Saint John

Average highs run from 86°F on August 1 to 79°F on August 31, and lows from 56°F to 50°F. Normal precipitation for the month is 0.34 in over about 3 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Saint John, in °F, with the record for each date.20406080100120151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
84°F
Average low
53°F
Precipitation
0.34 in
Record high
105°FAug 2, 2024
Record low
34°FAug 3, 2002
Chance of a freeze
1%
Days of 90°F or more
11.2
Daylight
14 h 53 min to 13 h 23 min
Cloud cover
40%
Humidity
48%
Dew point
47°F
Wind
7.4 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 186°F56°F99°F 200938°F 200210%0%
Aug 286°F56°F105°F 202439°F 200210%0%
Aug 386°F56°F96°F 199834°F 200210%0%
Aug 486°F55°F100°F 199840°F 200810%0%
Aug 586°F55°F101°F 199842°F 200210%0%
Aug 686°F55°F98°F 200840°F 200210%0%
Aug 786°F55°F99°F 201234°F 20029%0%
Aug 886°F55°F99°F 201837°F 20029%0%
Aug 985°F55°F105°F 201841°F 20129%0%
Aug 1085°F55°F101°F 201843°F 20079%0%
Aug 1185°F54°F100°F 201438°F 20079%0%
Aug 1285°F54°F99°F 200137°F 20009%0%
Aug 1385°F54°F100°F 201539°F 200010%0%
Aug 1484°F54°F98°F 200441°F 202010%0%
Aug 1584°F54°F100°F 202340°F 200010%0%
Aug 1684°F54°F100°F 202036°F 200010%0%
Aug 1784°F53°F102°F 200838°F 200010%0%
Aug 1883°F53°F99°F 202238°F 199810%0%
Aug 1983°F53°F95°F 201239°F 199810%0%
Aug 2083°F53°F98°F 200937°F 200110%0%
Aug 2182°F52°F100°F 202634°F 200010%0%
Aug 2282°F52°F91°F 201738°F 201510%0%
Aug 2382°F52°F96°F 199939°F 201011%0%
Aug 2482°F52°F93°F 202537°F 200511%0%
Aug 2581°F52°F96°F 202537°F 201211%0%
Aug 2681°F51°F93°F 200141°F 201711%0%
Aug 2781°F51°F97°F 200938°F 200011%0%
Aug 2880°F51°F100°F 200935°F 200011%0%
Aug 2980°F51°F101°F 201736°F 200012%0%
Aug 3080°F51°F95°F 202236°F 201012%0%
Aug 3179°F50°F101°F 202237°F 200612%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Saint John, in percent, and of at least 0.1 inch of snowfall.02.557.51012.51102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (PDT).

August 1
sunrise 5:30 AM, sunset 8:23 PM
August 31
sunrise 6:09 AM, sunset 7:32 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00457267 (St John), public domain. Records: NOAA GHCN-Daily, station USW00094129, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.