(Radio Iowa) – State Climatologist Justin Glisan says August didn’t follow the record July numbers when it came to rainfall. “About three-point-four (3.4) inches for the statewide average, and that’s about three-quarters of an inch below average, with the driest part of the state that southwestern corner, only about 53 percent of normal,” Glisan says. He says there wasn’t anything out of the ordinary for the August temperature. “The normal temperature for August to 71 degrees. I take the daytime high of the overhead low and add them together, divide by two. We came right at 71 degrees, so near normal for the temperature,” he says.
The summer as a whole ended up wetter than normal as July was the second wettest in 153 years of record keeping. “Preliminarily, we’re at about 18-and-a-half inches for that statewide average. That’s almost five inches above what we would expect,” Glisan says. “So we’re looking at around the tenth wettest, June, July and August on record. And much of that rainfall was at the end of June, and the very wet July that we had.” July averaged nine-point-two inches of rain, while June was right at its average. Glisan says summer wasn’t far from what we expect for temperature. “Slightly warmer than average, depending on where you are in the state, anywhere from a degree to a degree and a half above average,” Glisan says. “We did have some warmth in the third week of July with the heat Dome that’s set up, but overall we escaped the summer without any widespread and long term heat waves.”
What’s know as the meteorological fall starts September 1st, while the autumnal equinox is on September 22nd.
Today: Areas of smoke from Canadian wildfires, otherwise mostly sunny. A high near 71. W/SW winds 10-20 mph.
Tonight: A 30% chance of showers & thunderstorms. Areas of smoke through early Friday morning; Partly cloudy. Low 47.
Friday: Mostly sunny, with a high near 64. Winds NW @ 10-20 mph.
Friday Night: Mostly clear, with a low around 42.
Saturday: Sunny, with a high near 67.
Saturday Night: Mostly clear, with a low around 41.
Sunday: Sunny, with a high near 70.
Wednesday’s High in Atlantic was 71. The Low this morning was 43. We received .03″ rain in KJAN. Last year on this date, the High in Atlantic was 84 & the Low was 54. The All-time Record High on Sept. 4th in Atlantic, was 101 in 1918, & the Record Low was 33 in 1891. Sunrise: 6:48; Sunset: 7:48.
Today: Mostly cloudy w/a 40% chance of showers & thunderstorms. A high near 69. W/SW winds 10-20.
Tonight: Partly cloudy, with a low around 42.
Tomorrow: Sunny. A high near 69. SW winds 10-20 mph.
Tom. Night: A 30% chance of showers & thunderstorms thru midnight, otherwise mostly clear, with a low around 46.
Friday: Sunny, with a high near 64.
Friday Night: Mostly clear, with a low around 41.
Saturday: Sunny, with a high near 67.
Tuesday’s High in Atlantic was 79. The Low was 50. Last year on this date, the High in Atlantic was 80 & the Low was 45. The All-time Record High on Sept. 3rd in Atlantic, was 102 in 1937, & the Record Low was 32 in 1974. Sunrise: 6:47; Sunset: 7:50.
(Atlantic, Iowa) – Weather data for Atlantic during the month of August, 2025 (Compiled here at KJAN – the official National Weather Service reporting site), shows we were about average for the High, and about slightly more than two-degrees warmer than normal, for the Low. The average High last month was 83, compared to the 83 degree norm. The average Low was 59, compared to the norm of 61. The warmest day last month was on the 15th, when we topped out at 95 degrees. Our coolest morning was on the 25th, when the thermometer bottomed-out at 43 degrees.
Rainfall for the month was a little less than typical for Atlantic. Rainfall amounted to 3.64 inches, which was about one-quarter of an inch less than normal.
Looking ahead, we find the average High temperature for September in Atlantic, is typically 76 degrees, while the average Low is 51. Precipitation typically amounts to 3.81-inches. Check back with us during the first week of October, 2025, to see how our actual weather data compared to the historical averages for September.
Today: Patchy fog this morning (before 9am), otherwise, mostly sunny. A high near 75. Winds west at around 5 mph this afternoon.
Tonight: Partly cloudy w/a slight chance of showers & thunderstorms overnight. A low around 57.
Tomorrow: A 50% chance of showers & thunderstorms;Partly sunny. High near 69. SW-winds becoming N @ 10-20.
Tom. Night: Partly cloudy, with a low around 40.
Thursday: Sunny, with a high near 69.
Thu. Night: A 20% chance of showers & thunderstorms overnight; otherwise mostly clear, with a low around 48.
Friday: Sunny, with a high near 64.
Monday’s High in Atlantic was 70. The Low was this morning was 50. We received .13″ rain. Last year on this date, the High in Atlantic was 77 & the Low was 44. The All-time Record High on Sept. 2nd in Atlantic, was 101 in 2000, & the Record Low was 30 in 1893. Sunrise: 6:46; Sunset: 7:53.
Today: A 60% chance of showers & thunderstorms. A high near 69. East wind 5 to 10 mph. New rainfall amounts between a 1/10th & 1/4 of an inch (.10-.25″), except higher amounts possible in thunderstorms.
Tonight: Showers and possibly a thunderstorm. Low around 60. East southeast wind 5 to 10 mph. New rainfall amounts between a 1/4 and 1/2 of an inch (.25-.50″) is possible.
Labor Day: Showers likely & possible thunderstorms. A high near 68. East southeast wind 5 to 10 mph. New rainfall amounts between a 1/10 & 1/4 of an inch, except higher amounts possible in thunderstorms.
Monday Night: A slight chance of thunderstorms. A low around 54.
Tuesday: A 30% chance of showers, with thunderstorms also possible after 1pm; otherwise. Mostly sunny. High near 73.
Tuesday Night: A chance of showers & thunderstorms after midnight. A low around 55.
Wednesday: Partly sunny w/a 40% chance of showers and thunderstorms. A high near 69.
Saturday’s High in Atlantic was 84. The Low was 56. We received .05″ rain overnight Saturday into early this morning (as of 6:30-a.m.). Last year on this date, the High in Atlantic was 84 & the Low was 51. The All-time Record High on Aug. 31st in Atlantic, was 101 in 1913, & the Record Low was 35 in 1967. Sunrise: 6:44; Sunset: 7:55.
Today: Sunny, with a high near 80. Wind southeast at around 5 mph this afternoon.
Tonight: Partly cloudy, with a low around 57. Light east wind.
Tomorrow: Mostly sunny, with a high near 80. Winds becoming southerly at around 5 mph in the afternoon.
Tom. Night: Mostly cloudy, with a low around 59.
Saturday: A slight chance of afternoon showers & thunderstorms, otherwise partly sunny, with a high near 79.
Sat. Night: A 30% chance of showers & thunderstorms after midnight. A low around 60.
Sunday: A 30% chance of showers, & possible afternoon thunderstorms. A high near 75.
Sunday Night: Mostly cloudy, with a low around 57.
Labor Day: Mostly sunny, with a high near 77.
Wednesday’s High in Atlantic was 81. Our Low this morning, was 50. Last year on this date, the High in Atlantic was 89 and the Low was 67. The Record High in Atlantic on Aug. 28th was 100 in 1984. The Record Low was 35 in 1967. Sunrise: 6:41; Sunset: 8:00.